HL001C

beta_signed_horner_root_value_derivative_exists

Alpha v34 independently verified · alpha_closed; checked-use authorized; not Stable

Every actual signed-polynomial root has actual positive/negative value and formal-derivative traces consistent with its witnessed root equation.

Current library: Alpha v34, 4,223 checked-use theorems; Stable remains 432. Historical first admissions, original proof editions, and non-admitted aliases are preserved. Exact original first-admission records.

Exact expanded first-order arithmetic statement

forall pb pc nb nc a l M. (exists sph_positive_root sph_negative_root. ((exists ff_u_ph_hpl_sph_root_positive ff_v_ph_hpl_sph_root_positive. ((((exists fs_h_ph_hpl_sph_root_positive_body_start. fs_h_ph_hpl_sph_root_positive_body_start + S (0) = S ((S (0)) * ff_v_ph_hpl_sph_root_positive)) /\ exists fs_q_ph_hpl_sph_root_positive_body_start. ff_u_ph_hpl_sph_root_positive = fs_q_ph_hpl_sph_root_positive_body_start * S ((S (0)) * ff_v_ph_hpl_sph_root_positive) + (0))) /\ ((((exists fs_h_ph_hpl_sph_root_positive_body_terminal. fs_h_ph_hpl_sph_root_positive_body_terminal + S (sph_positive_root) = S ((S (l)) * ff_v_ph_hpl_sph_root_positive)) /\ exists fs_q_ph_hpl_sph_root_positive_body_terminal. ff_u_ph_hpl_sph_root_positive = fs_q_ph_hpl_sph_root_positive_body_terminal * S ((S (l)) * ff_v_ph_hpl_sph_root_positive) + (sph_positive_root))) /\ forall ff_i_ph_hpl_sph_root_positive_body_steps. (exists ph_bound_hpl_sph_root_positive_body_steps. ph_bound_hpl_sph_root_positive_body_steps + S ff_i_ph_hpl_sph_root_positive_body_steps = l) -> exists ff_coefficient_ph_hpl_sph_root_positive_body_steps ff_previous_ph_hpl_sph_root_positive_body_steps ff_current_ph_hpl_sph_root_positive_body_steps. ((((exists fs_h_ph_hpl_sph_root_positive_body_steps_coefficient. fs_h_ph_hpl_sph_root_positive_body_steps_coefficient + S (ff_coefficient_ph_hpl_sph_root_positive_body_steps) = S ((S (ff_i_ph_hpl_sph_root_positive_body_steps)) * pc)) /\ exists fs_q_ph_hpl_sph_root_positive_body_steps_coefficient. pb = fs_q_ph_hpl_sph_root_positive_body_steps_coefficient * S ((S (ff_i_ph_hpl_sph_root_positive_body_steps)) * pc) + (ff_coefficient_ph_hpl_sph_root_positive_body_steps))) /\ ((((exists fs_h_ph_hpl_sph_root_positive_body_steps_before. fs_h_ph_hpl_sph_root_positive_body_steps_before + S (ff_previous_ph_hpl_sph_root_positive_body_steps) = S ((S (ff_i_ph_hpl_sph_root_positive_body_steps)) * ff_v_ph_hpl_sph_root_positive)) /\ exists fs_q_ph_hpl_sph_root_positive_body_steps_before. ff_u_ph_hpl_sph_root_positive = fs_q_ph_hpl_sph_root_positive_body_steps_before * S ((S (ff_i_ph_hpl_sph_root_positive_body_steps)) * ff_v_ph_hpl_sph_root_positive) + (ff_previous_ph_hpl_sph_root_positive_body_steps))) /\ ((((exists fs_h_ph_hpl_sph_root_positive_body_steps_after. fs_h_ph_hpl_sph_root_positive_body_steps_after + S (ff_current_ph_hpl_sph_root_positive_body_steps) = S ((S (S ff_i_ph_hpl_sph_root_positive_body_steps)) * ff_v_ph_hpl_sph_root_positive)) /\ exists fs_q_ph_hpl_sph_root_positive_body_steps_after. ff_u_ph_hpl_sph_root_positive = fs_q_ph_hpl_sph_root_positive_body_steps_after * S ((S (S ff_i_ph_hpl_sph_root_positive_body_steps)) * ff_v_ph_hpl_sph_root_positive) + (ff_current_ph_hpl_sph_root_positive_body_steps))) /\ ff_current_ph_hpl_sph_root_positive_body_steps = ff_previous_ph_hpl_sph_root_positive_body_steps * a + ff_coefficient_ph_hpl_sph_root_positive_body_steps)))))) /\ ((exists ff_u_ph_hpl_sph_root_negative ff_v_ph_hpl_sph_root_negative. ((((exists fs_h_ph_hpl_sph_root_negative_body_start. fs_h_ph_hpl_sph_root_negative_body_start + S (0) = S ((S (0)) * ff_v_ph_hpl_sph_root_negative)) /\ exists fs_q_ph_hpl_sph_root_negative_body_start. ff_u_ph_hpl_sph_root_negative = fs_q_ph_hpl_sph_root_negative_body_start * S ((S (0)) * ff_v_ph_hpl_sph_root_negative) + (0))) /\ ((((exists fs_h_ph_hpl_sph_root_negative_body_terminal. fs_h_ph_hpl_sph_root_negative_body_terminal + S (sph_negative_root) = S ((S (l)) * ff_v_ph_hpl_sph_root_negative)) /\ exists fs_q_ph_hpl_sph_root_negative_body_terminal. ff_u_ph_hpl_sph_root_negative = fs_q_ph_hpl_sph_root_negative_body_terminal * S ((S (l)) * ff_v_ph_hpl_sph_root_negative) + (sph_negative_root))) /\ forall ff_i_ph_hpl_sph_root_negative_body_steps. (exists ph_bound_hpl_sph_root_negative_body_steps. ph_bound_hpl_sph_root_negative_body_steps + S ff_i_ph_hpl_sph_root_negative_body_steps = l) -> exists ff_coefficient_ph_hpl_sph_root_negative_body_steps ff_previous_ph_hpl_sph_root_negative_body_steps ff_current_ph_hpl_sph_root_negative_body_steps. ((((exists fs_h_ph_hpl_sph_root_negative_body_steps_coefficient. fs_h_ph_hpl_sph_root_negative_body_steps_coefficient + S (ff_coefficient_ph_hpl_sph_root_negative_body_steps) = S ((S (ff_i_ph_hpl_sph_root_negative_body_steps)) * nc)) /\ exists fs_q_ph_hpl_sph_root_negative_body_steps_coefficient. nb = fs_q_ph_hpl_sph_root_negative_body_steps_coefficient * S ((S (ff_i_ph_hpl_sph_root_negative_body_steps)) * nc) + (ff_coefficient_ph_hpl_sph_root_negative_body_steps))) /\ ((((exists fs_h_ph_hpl_sph_root_negative_body_steps_before. fs_h_ph_hpl_sph_root_negative_body_steps_before + S (ff_previous_ph_hpl_sph_root_negative_body_steps) = S ((S (ff_i_ph_hpl_sph_root_negative_body_steps)) * ff_v_ph_hpl_sph_root_negative)) /\ exists fs_q_ph_hpl_sph_root_negative_body_steps_before. ff_u_ph_hpl_sph_root_negative = fs_q_ph_hpl_sph_root_negative_body_steps_before * S ((S (ff_i_ph_hpl_sph_root_negative_body_steps)) * ff_v_ph_hpl_sph_root_negative) + (ff_previous_ph_hpl_sph_root_negative_body_steps))) /\ ((((exists fs_h_ph_hpl_sph_root_negative_body_steps_after. fs_h_ph_hpl_sph_root_negative_body_steps_after + S (ff_current_ph_hpl_sph_root_negative_body_steps) = S ((S (S ff_i_ph_hpl_sph_root_negative_body_steps)) * ff_v_ph_hpl_sph_root_negative)) /\ exists fs_q_ph_hpl_sph_root_negative_body_steps_after. ff_u_ph_hpl_sph_root_negative = fs_q_ph_hpl_sph_root_negative_body_steps_after * S ((S (S ff_i_ph_hpl_sph_root_negative_body_steps)) * ff_v_ph_hpl_sph_root_negative) + (ff_current_ph_hpl_sph_root_negative_body_steps))) /\ ff_current_ph_hpl_sph_root_negative_body_steps = ff_previous_ph_hpl_sph_root_negative_body_steps * a + ff_coefficient_ph_hpl_sph_root_negative_body_steps)))))) /\ (exists hgcrt_mod_left_hpl_root hgcrt_mod_right_hpl_root. sph_positive_root + M * hgcrt_mod_left_hpl_root = sph_negative_root + M * hgcrt_mod_right_hpl_root)))) -> exists vp dp vn dn. ((((exists ff_u_hd_hpl_sph_pair_positive ff_v_hd_hpl_sph_pair_positive ff_d_hd_hpl_sph_pair_positive ff_e_hd_hpl_sph_pair_positive. ((((((exists fs_h_ph_hd_hpl_sph_pair_positive_body_value_start. fs_h_ph_hd_hpl_sph_pair_positive_body_value_start + S (0) = S ((S (0)) * ff_v_hd_hpl_sph_pair_positive)) /\ exists fs_q_ph_hd_hpl_sph_pair_positive_body_value_start. ff_u_hd_hpl_sph_pair_positive = fs_q_ph_hd_hpl_sph_pair_positive_body_value_start * S ((S (0)) * ff_v_hd_hpl_sph_pair_positive) + (0))) /\ ((((exists fs_h_ph_hd_hpl_sph_pair_positive_body_value_terminal. fs_h_ph_hd_hpl_sph_pair_positive_body_value_terminal + S (vp) = S ((S (l)) * ff_v_hd_hpl_sph_pair_positive)) /\ exists fs_q_ph_hd_hpl_sph_pair_positive_body_value_terminal. ff_u_hd_hpl_sph_pair_positive = fs_q_ph_hd_hpl_sph_pair_positive_body_value_terminal * S ((S (l)) * ff_v_hd_hpl_sph_pair_positive) + (vp))) /\ forall ff_i_ph_hd_hpl_sph_pair_positive_body_value_steps. (exists ph_bound_hd_hpl_sph_pair_positive_body_value_steps. ph_bound_hd_hpl_sph_pair_positive_body_value_steps + S ff_i_ph_hd_hpl_sph_pair_positive_body_value_steps = l) -> exists ff_coefficient_ph_hd_hpl_sph_pair_positive_body_value_steps ff_previous_ph_hd_hpl_sph_pair_positive_body_value_steps ff_current_ph_hd_hpl_sph_pair_positive_body_value_steps. ((((exists fs_h_ph_hd_hpl_sph_pair_positive_body_value_steps_coefficient. fs_h_ph_hd_hpl_sph_pair_positive_body_value_steps_coefficient + S (ff_coefficient_ph_hd_hpl_sph_pair_positive_body_value_steps) = S ((S (ff_i_ph_hd_hpl_sph_pair_positive_body_value_steps)) * pc)) /\ exists fs_q_ph_hd_hpl_sph_pair_positive_body_value_steps_coefficient. pb = fs_q_ph_hd_hpl_sph_pair_positive_body_value_steps_coefficient * S ((S (ff_i_ph_hd_hpl_sph_pair_positive_body_value_steps)) * pc) + (ff_coefficient_ph_hd_hpl_sph_pair_positive_body_value_steps))) /\ ((((exists fs_h_ph_hd_hpl_sph_pair_positive_body_value_steps_before. fs_h_ph_hd_hpl_sph_pair_positive_body_value_steps_before + S (ff_previous_ph_hd_hpl_sph_pair_positive_body_value_steps) = S ((S (ff_i_ph_hd_hpl_sph_pair_positive_body_value_steps)) * ff_v_hd_hpl_sph_pair_positive)) /\ exists fs_q_ph_hd_hpl_sph_pair_positive_body_value_steps_before. ff_u_hd_hpl_sph_pair_positive = fs_q_ph_hd_hpl_sph_pair_positive_body_value_steps_before * S ((S (ff_i_ph_hd_hpl_sph_pair_positive_body_value_steps)) * ff_v_hd_hpl_sph_pair_positive) + (ff_previous_ph_hd_hpl_sph_pair_positive_body_value_steps))) /\ ((((exists fs_h_ph_hd_hpl_sph_pair_positive_body_value_steps_after. fs_h_ph_hd_hpl_sph_pair_positive_body_value_steps_after + S (ff_current_ph_hd_hpl_sph_pair_positive_body_value_steps) = S ((S (S ff_i_ph_hd_hpl_sph_pair_positive_body_value_steps)) * ff_v_hd_hpl_sph_pair_positive)) /\ exists fs_q_ph_hd_hpl_sph_pair_positive_body_value_steps_after. ff_u_hd_hpl_sph_pair_positive = fs_q_ph_hd_hpl_sph_pair_positive_body_value_steps_after * S ((S (S ff_i_ph_hd_hpl_sph_pair_positive_body_value_steps)) * ff_v_hd_hpl_sph_pair_positive) + (ff_current_ph_hd_hpl_sph_pair_positive_body_value_steps))) /\ ff_current_ph_hd_hpl_sph_pair_positive_body_value_steps = ff_previous_ph_hd_hpl_sph_pair_positive_body_value_steps * a + ff_coefficient_ph_hd_hpl_sph_pair_positive_body_value_steps)))))) /\ (((((exists fs_h_ph_hd_hpl_sph_pair_positive_body_derivative_start. fs_h_ph_hd_hpl_sph_pair_positive_body_derivative_start + S (0) = S ((S (0)) * ff_e_hd_hpl_sph_pair_positive)) /\ exists fs_q_ph_hd_hpl_sph_pair_positive_body_derivative_start. ff_d_hd_hpl_sph_pair_positive = fs_q_ph_hd_hpl_sph_pair_positive_body_derivative_start * S ((S (0)) * ff_e_hd_hpl_sph_pair_positive) + (0))) /\ ((((exists fs_h_ph_hd_hpl_sph_pair_positive_body_derivative_terminal. fs_h_ph_hd_hpl_sph_pair_positive_body_derivative_terminal + S (dp) = S ((S (l)) * ff_e_hd_hpl_sph_pair_positive)) /\ exists fs_q_ph_hd_hpl_sph_pair_positive_body_derivative_terminal. ff_d_hd_hpl_sph_pair_positive = fs_q_ph_hd_hpl_sph_pair_positive_body_derivative_terminal * S ((S (l)) * ff_e_hd_hpl_sph_pair_positive) + (dp))) /\ forall ff_i_ph_hd_hpl_sph_pair_positive_body_derivative_steps. (exists ph_bound_hd_hpl_sph_pair_positive_body_derivative_steps. ph_bound_hd_hpl_sph_pair_positive_body_derivative_steps + S ff_i_ph_hd_hpl_sph_pair_positive_body_derivative_steps = l) -> exists ff_coefficient_ph_hd_hpl_sph_pair_positive_body_derivative_steps ff_previous_ph_hd_hpl_sph_pair_positive_body_derivative_steps ff_current_ph_hd_hpl_sph_pair_positive_body_derivative_steps. ((((exists fs_h_ph_hd_hpl_sph_pair_positive_body_derivative_steps_coefficient. fs_h_ph_hd_hpl_sph_pair_positive_body_derivative_steps_coefficient + S (ff_coefficient_ph_hd_hpl_sph_pair_positive_body_derivative_steps) = S ((S (ff_i_ph_hd_hpl_sph_pair_positive_body_derivative_steps)) * ff_v_hd_hpl_sph_pair_positive)) /\ exists fs_q_ph_hd_hpl_sph_pair_positive_body_derivative_steps_coefficient. ff_u_hd_hpl_sph_pair_positive = fs_q_ph_hd_hpl_sph_pair_positive_body_derivative_steps_coefficient * S ((S (ff_i_ph_hd_hpl_sph_pair_positive_body_derivative_steps)) * ff_v_hd_hpl_sph_pair_positive) + (ff_coefficient_ph_hd_hpl_sph_pair_positive_body_derivative_steps))) /\ ((((exists fs_h_ph_hd_hpl_sph_pair_positive_body_derivative_steps_before. fs_h_ph_hd_hpl_sph_pair_positive_body_derivative_steps_before + S (ff_previous_ph_hd_hpl_sph_pair_positive_body_derivative_steps) = S ((S (ff_i_ph_hd_hpl_sph_pair_positive_body_derivative_steps)) * ff_e_hd_hpl_sph_pair_positive)) /\ exists fs_q_ph_hd_hpl_sph_pair_positive_body_derivative_steps_before. ff_d_hd_hpl_sph_pair_positive = fs_q_ph_hd_hpl_sph_pair_positive_body_derivative_steps_before * S ((S (ff_i_ph_hd_hpl_sph_pair_positive_body_derivative_steps)) * ff_e_hd_hpl_sph_pair_positive) + (ff_previous_ph_hd_hpl_sph_pair_positive_body_derivative_steps))) /\ ((((exists fs_h_ph_hd_hpl_sph_pair_positive_body_derivative_steps_after. fs_h_ph_hd_hpl_sph_pair_positive_body_derivative_steps_after + S (ff_current_ph_hd_hpl_sph_pair_positive_body_derivative_steps) = S ((S (S ff_i_ph_hd_hpl_sph_pair_positive_body_derivative_steps)) * ff_e_hd_hpl_sph_pair_positive)) /\ exists fs_q_ph_hd_hpl_sph_pair_positive_body_derivative_steps_after. ff_d_hd_hpl_sph_pair_positive = fs_q_ph_hd_hpl_sph_pair_positive_body_derivative_steps_after * S ((S (S ff_i_ph_hd_hpl_sph_pair_positive_body_derivative_steps)) * ff_e_hd_hpl_sph_pair_positive) + (ff_current_ph_hd_hpl_sph_pair_positive_body_derivative_steps))) /\ ff_current_ph_hd_hpl_sph_pair_positive_body_derivative_steps = ff_previous_ph_hd_hpl_sph_pair_positive_body_derivative_steps * a + ff_coefficient_ph_hd_hpl_sph_pair_positive_body_derivative_steps)))))))) /\ (exists ff_u_hd_hpl_sph_pair_negative ff_v_hd_hpl_sph_pair_negative ff_d_hd_hpl_sph_pair_negative ff_e_hd_hpl_sph_pair_negative. ((((((exists fs_h_ph_hd_hpl_sph_pair_negative_body_value_start. fs_h_ph_hd_hpl_sph_pair_negative_body_value_start + S (0) = S ((S (0)) * ff_v_hd_hpl_sph_pair_negative)) /\ exists fs_q_ph_hd_hpl_sph_pair_negative_body_value_start. ff_u_hd_hpl_sph_pair_negative = fs_q_ph_hd_hpl_sph_pair_negative_body_value_start * S ((S (0)) * ff_v_hd_hpl_sph_pair_negative) + (0))) /\ ((((exists fs_h_ph_hd_hpl_sph_pair_negative_body_value_terminal. fs_h_ph_hd_hpl_sph_pair_negative_body_value_terminal + S (vn) = S ((S (l)) * ff_v_hd_hpl_sph_pair_negative)) /\ exists fs_q_ph_hd_hpl_sph_pair_negative_body_value_terminal. ff_u_hd_hpl_sph_pair_negative = fs_q_ph_hd_hpl_sph_pair_negative_body_value_terminal * S ((S (l)) * ff_v_hd_hpl_sph_pair_negative) + (vn))) /\ forall ff_i_ph_hd_hpl_sph_pair_negative_body_value_steps. (exists ph_bound_hd_hpl_sph_pair_negative_body_value_steps. ph_bound_hd_hpl_sph_pair_negative_body_value_steps + S ff_i_ph_hd_hpl_sph_pair_negative_body_value_steps = l) -> exists ff_coefficient_ph_hd_hpl_sph_pair_negative_body_value_steps ff_previous_ph_hd_hpl_sph_pair_negative_body_value_steps ff_current_ph_hd_hpl_sph_pair_negative_body_value_steps. ((((exists fs_h_ph_hd_hpl_sph_pair_negative_body_value_steps_coefficient. fs_h_ph_hd_hpl_sph_pair_negative_body_value_steps_coefficient + S (ff_coefficient_ph_hd_hpl_sph_pair_negative_body_value_steps) = S ((S (ff_i_ph_hd_hpl_sph_pair_negative_body_value_steps)) * nc)) /\ exists fs_q_ph_hd_hpl_sph_pair_negative_body_value_steps_coefficient. nb = fs_q_ph_hd_hpl_sph_pair_negative_body_value_steps_coefficient * S ((S (ff_i_ph_hd_hpl_sph_pair_negative_body_value_steps)) * nc) + (ff_coefficient_ph_hd_hpl_sph_pair_negative_body_value_steps))) /\ ((((exists fs_h_ph_hd_hpl_sph_pair_negative_body_value_steps_before. fs_h_ph_hd_hpl_sph_pair_negative_body_value_steps_before + S (ff_previous_ph_hd_hpl_sph_pair_negative_body_value_steps) = S ((S (ff_i_ph_hd_hpl_sph_pair_negative_body_value_steps)) * ff_v_hd_hpl_sph_pair_negative)) /\ exists fs_q_ph_hd_hpl_sph_pair_negative_body_value_steps_before. ff_u_hd_hpl_sph_pair_negative = fs_q_ph_hd_hpl_sph_pair_negative_body_value_steps_before * S ((S (ff_i_ph_hd_hpl_sph_pair_negative_body_value_steps)) * ff_v_hd_hpl_sph_pair_negative) + (ff_previous_ph_hd_hpl_sph_pair_negative_body_value_steps))) /\ ((((exists fs_h_ph_hd_hpl_sph_pair_negative_body_value_steps_after. fs_h_ph_hd_hpl_sph_pair_negative_body_value_steps_after + S (ff_current_ph_hd_hpl_sph_pair_negative_body_value_steps) = S ((S (S ff_i_ph_hd_hpl_sph_pair_negative_body_value_steps)) * ff_v_hd_hpl_sph_pair_negative)) /\ exists fs_q_ph_hd_hpl_sph_pair_negative_body_value_steps_after. ff_u_hd_hpl_sph_pair_negative = fs_q_ph_hd_hpl_sph_pair_negative_body_value_steps_after * S ((S (S ff_i_ph_hd_hpl_sph_pair_negative_body_value_steps)) * ff_v_hd_hpl_sph_pair_negative) + (ff_current_ph_hd_hpl_sph_pair_negative_body_value_steps))) /\ ff_current_ph_hd_hpl_sph_pair_negative_body_value_steps = ff_previous_ph_hd_hpl_sph_pair_negative_body_value_steps * a + ff_coefficient_ph_hd_hpl_sph_pair_negative_body_value_steps)))))) /\ (((((exists fs_h_ph_hd_hpl_sph_pair_negative_body_derivative_start. fs_h_ph_hd_hpl_sph_pair_negative_body_derivative_start + S (0) = S ((S (0)) * ff_e_hd_hpl_sph_pair_negative)) /\ exists fs_q_ph_hd_hpl_sph_pair_negative_body_derivative_start. ff_d_hd_hpl_sph_pair_negative = fs_q_ph_hd_hpl_sph_pair_negative_body_derivative_start * S ((S (0)) * ff_e_hd_hpl_sph_pair_negative) + (0))) /\ ((((exists fs_h_ph_hd_hpl_sph_pair_negative_body_derivative_terminal. fs_h_ph_hd_hpl_sph_pair_negative_body_derivative_terminal + S (dn) = S ((S (l)) * ff_e_hd_hpl_sph_pair_negative)) /\ exists fs_q_ph_hd_hpl_sph_pair_negative_body_derivative_terminal. ff_d_hd_hpl_sph_pair_negative = fs_q_ph_hd_hpl_sph_pair_negative_body_derivative_terminal * S ((S (l)) * ff_e_hd_hpl_sph_pair_negative) + (dn))) /\ forall ff_i_ph_hd_hpl_sph_pair_negative_body_derivative_steps. (exists ph_bound_hd_hpl_sph_pair_negative_body_derivative_steps. ph_bound_hd_hpl_sph_pair_negative_body_derivative_steps + S ff_i_ph_hd_hpl_sph_pair_negative_body_derivative_steps = l) -> exists ff_coefficient_ph_hd_hpl_sph_pair_negative_body_derivative_steps ff_previous_ph_hd_hpl_sph_pair_negative_body_derivative_steps ff_current_ph_hd_hpl_sph_pair_negative_body_derivative_steps. ((((exists fs_h_ph_hd_hpl_sph_pair_negative_body_derivative_steps_coefficient. fs_h_ph_hd_hpl_sph_pair_negative_body_derivative_steps_coefficient + S (ff_coefficient_ph_hd_hpl_sph_pair_negative_body_derivative_steps) = S ((S (ff_i_ph_hd_hpl_sph_pair_negative_body_derivative_steps)) * ff_v_hd_hpl_sph_pair_negative)) /\ exists fs_q_ph_hd_hpl_sph_pair_negative_body_derivative_steps_coefficient. ff_u_hd_hpl_sph_pair_negative = fs_q_ph_hd_hpl_sph_pair_negative_body_derivative_steps_coefficient * S ((S (ff_i_ph_hd_hpl_sph_pair_negative_body_derivative_steps)) * ff_v_hd_hpl_sph_pair_negative) + (ff_coefficient_ph_hd_hpl_sph_pair_negative_body_derivative_steps))) /\ ((((exists fs_h_ph_hd_hpl_sph_pair_negative_body_derivative_steps_before. fs_h_ph_hd_hpl_sph_pair_negative_body_derivative_steps_before + S (ff_previous_ph_hd_hpl_sph_pair_negative_body_derivative_steps) = S ((S (ff_i_ph_hd_hpl_sph_pair_negative_body_derivative_steps)) * ff_e_hd_hpl_sph_pair_negative)) /\ exists fs_q_ph_hd_hpl_sph_pair_negative_body_derivative_steps_before. ff_d_hd_hpl_sph_pair_negative = fs_q_ph_hd_hpl_sph_pair_negative_body_derivative_steps_before * S ((S (ff_i_ph_hd_hpl_sph_pair_negative_body_derivative_steps)) * ff_e_hd_hpl_sph_pair_negative) + (ff_previous_ph_hd_hpl_sph_pair_negative_body_derivative_steps))) /\ ((((exists fs_h_ph_hd_hpl_sph_pair_negative_body_derivative_steps_after. fs_h_ph_hd_hpl_sph_pair_negative_body_derivative_steps_after + S (ff_current_ph_hd_hpl_sph_pair_negative_body_derivative_steps) = S ((S (S ff_i_ph_hd_hpl_sph_pair_negative_body_derivative_steps)) * ff_e_hd_hpl_sph_pair_negative)) /\ exists fs_q_ph_hd_hpl_sph_pair_negative_body_derivative_steps_after. ff_d_hd_hpl_sph_pair_negative = fs_q_ph_hd_hpl_sph_pair_negative_body_derivative_steps_after * S ((S (S ff_i_ph_hd_hpl_sph_pair_negative_body_derivative_steps)) * ff_e_hd_hpl_sph_pair_negative) + (ff_current_ph_hd_hpl_sph_pair_negative_body_derivative_steps))) /\ ff_current_ph_hd_hpl_sph_pair_negative_body_derivative_steps = ff_previous_ph_hd_hpl_sph_pair_negative_body_derivative_steps * a + ff_coefficient_ph_hd_hpl_sph_pair_negative_body_derivative_steps)))))))))) /\ (exists hgcrt_mod_left_hpl_mod hgcrt_mod_right_hpl_mod. vp + M * hgcrt_mod_left_hpl_mod = vn + M * hgcrt_mod_right_hpl_mod))

Constructive proof overview

Generated structural guide

Every actual signed-polynomial root has actual positive/negative value and formal-derivative traces consistent with its witnessed root equation.

The unchanged tactic script uses 3 declared prerequisites and contains 73 exact native proof lines.

Alpha v34 checked-use · first admitted v27 · independently kernel and Lean verified; not Stable

Proof neighborhood

Direct dependencies

beta_horner_derivative_value_exists Alpha theorem; checked-use authorized beta_horner_derivative_value_projection Alpha theorem; checked-use authorized beta_horner_eval_functional Alpha theorem; checked-use authorized

Direct dependents

Formal native tactic body

Dependencies are introduced as named hypotheses before line 1. Local theorem links identify exact declared prerequisites. This exact body belongs to a complete independently kernel-checked constructive proof bundle and has Alpha checked-use authority; it does not imply Stable membership.

Read the argument

Proof checkpoints

73 script commands · 14 reading checkpoints · 4 local claims

This is a reading aid, not a new proof or a proof-tree certificate. Checkpoint groups are consecutive commands, not inferred branch boundaries. Every step links to the preserved script.

Long local formulas use this family’s existing definitions. Each new abbreviation was expanded back to the identical native formula, including its free-variable context. The original edition is preserved below.

01Fix variables and assumptionsL1–8

Work with arbitrary variables or the premises of the current implication.

  1. L1
    intro pb
  2. L2
    intro pc
  3. L3
    intro nb
  4. L4
    intro nc
  5. L5
    intro a
  6. L6
    intro l
  7. L7
    intro M
  8. L8
    intro hroot
02Establish hPL9–14

Establish this local claim before using it. It is not an additional assumption. The following proof commands apply beta horner derivative value exists.

  1. L9
    have hP : ∃ vp. ∃ dp. HornerDerivative(pb,pc,a,l,vp,dp)Definitions: HornerDerivative
  2. L10
    specialize beta_horner_derivative_value_exists pb
  3. L11
    specialize beta_horner_derivative_value_exists pc
  4. L12
    specialize beta_horner_derivative_value_exists a
  5. L13
    specialize beta_horner_derivative_value_exists l
  6. L14
    apply beta_horner_derivative_value_exists
03Separate the logical casesL15–16

Follow the explicit conjunction, disjunction, witness, or contradiction step recorded below.

  1. L15
    cases hP
  2. L16
    cases hP_witness
04Establish hNL17–22

Establish this local claim before using it. It is not an additional assumption. The following proof commands apply beta horner derivative value exists.

  1. L17
    have hN : ∃ vn. ∃ dn. HornerDerivative(nb,nc,a,l,vn,dn)Definitions: HornerDerivative
  2. L18
    specialize beta_horner_derivative_value_exists nb
  3. L19
    specialize beta_horner_derivative_value_exists nc
  4. L20
    specialize beta_horner_derivative_value_exists a
  5. L21
    specialize beta_horner_derivative_value_exists l
  6. L22
    apply beta_horner_derivative_value_exists
05Separate the logical casesL23–28

Follow the explicit conjunction, disjunction, witness, or contradiction step recorded below.

  1. L23
    cases hN
  2. L24
    cases hN_witness
  3. L25
    cases hroot
  4. L26
    cases hroot_witness
  5. L27
    cases hroot_witness_witness
  6. L28
    cases hroot_witness_witness_right
06Establish hpositiveL29–38

Establish this local claim before using it. It is not an additional assumption. The following proof commands apply beta horner eval functional.

  1. L29
    have hpositive : x = x4
  2. L30
    specialize beta_horner_eval_functional pb
  3. L31
    specialize beta_horner_eval_functional pc
  4. L32
    specialize beta_horner_eval_functional a
  5. L33
    specialize beta_horner_eval_functional l
  6. L34
    specialize beta_horner_eval_functional x
  7. L35
    specialize beta_horner_eval_functional x4
  8. L36
    apply beta_horner_eval_functional
  9. L37
    specialize beta_horner_derivative_value_projection pb
  10. L38
    specialize beta_horner_derivative_value_projection pc
07Use earlier factsL39–45

Instantiate or apply named facts and discharge the corresponding proof obligations.

  1. L39
    specialize beta_horner_derivative_value_projection a
  2. L40
    specialize beta_horner_derivative_value_projection l
  3. L41
    specialize beta_horner_derivative_value_projection x
  4. L42
    specialize beta_horner_derivative_value_projection x1
  5. L43
    apply beta_horner_derivative_value_projection
  6. L44
    exact hP_witness_witness
  7. L45
    exact hroot_witness_witness_left
08Establish hnegativeL46–55

Establish this local claim before using it. It is not an additional assumption. The following proof commands apply beta horner eval functional.

  1. L46
    have hnegative : x2 = x5
  2. L47
    specialize beta_horner_eval_functional nb
  3. L48
    specialize beta_horner_eval_functional nc
  4. L49
    specialize beta_horner_eval_functional a
  5. L50
    specialize beta_horner_eval_functional l
  6. L51
    specialize beta_horner_eval_functional x2
  7. L52
    specialize beta_horner_eval_functional x5
  8. L53
    apply beta_horner_eval_functional
  9. L54
    specialize beta_horner_derivative_value_projection nb
  10. L55
    specialize beta_horner_derivative_value_projection nc
09Use earlier factsL56–62

Instantiate or apply named facts and discharge the corresponding proof obligations.

  1. L56
    specialize beta_horner_derivative_value_projection a
  2. L57
    specialize beta_horner_derivative_value_projection l
  3. L58
    specialize beta_horner_derivative_value_projection x2
  4. L59
    specialize beta_horner_derivative_value_projection x3
  5. L60
    apply beta_horner_derivative_value_projection
  6. L61
    exact hN_witness_witness
  7. L62
    exact hroot_witness_witness_right_left
10Construct an explicit witnessL63–66

Supply the displayed value, then prove that it has the required property.

  1. L63
    exists x
  2. L64
    exists x1
  3. L65
    exists x2
  4. L66
    exists x3
11Separate the logical casesL67–68

Follow the explicit conjunction, disjunction, witness, or contradiction step recorded below.

  1. L67
    split
  2. L68
    split
12Use earlier factsL69–70

Instantiate or apply named facts and discharge the corresponding proof obligations.

  1. L69
    exact hP_witness_witness
  2. L70
    exact hN_witness_witness
13Calculate and transport equalitiesL71–72

Carry out the recorded arithmetic or equality steps; inspect the exact commands for their direction and premises.

  1. L71
    rewrite hpositive
  2. L72
    rewrite hnegative
14Use earlier factsL73–73

Instantiate or apply named facts and discharge the corresponding proof obligations.

  1. L73
    exact hroot_witness_witness_right_right

Library-wide reading audit

Original exact command ledger · 73 lines
  1. 0001intro pb
  2. 0002intro pc
  3. 0003intro nb
  4. 0004intro nc
  5. 0005intro a
  6. 0006intro l
  7. 0007intro M
  8. 0008intro hroot
  9. 0009have hP : exists vp dp. (exists ff_u_hd_hpl_pair ff_v_hd_hpl_pair ff_d_hd_hpl_pair ff_e_hd_hpl_pair. ((((((exists fs_h_ph_hd_hpl_pair_body_value_start. fs_h_ph_hd_hpl_pair_body_value_start + S (0) = S ((S (0)) * ff_v_hd_hpl_pair)) /\ exists fs_q_ph_hd_hpl_pair_body_value_start. ff_u_hd_hpl_pair = fs_q_ph_hd_hpl_pair_body_value_start * S ((S (0)) * ff_v_hd_hpl_pair) + (0))) /\ ((((exists fs_h_ph_hd_hpl_pair_body_value_terminal. fs_h_ph_hd_hpl_pair_body_value_terminal + S (vp) = S ((S (l)) * ff_v_hd_hpl_pair)) /\ exists fs_q_ph_hd_hpl_pair_body_value_terminal. ff_u_hd_hpl_pair = fs_q_ph_hd_hpl_pair_body_value_terminal * S ((S (l)) * ff_v_hd_hpl_pair) + (vp))) /\ forall ff_i_ph_hd_hpl_pair_body_value_steps. (exists ph_bound_hd_hpl_pair_body_value_steps. ph_bound_hd_hpl_pair_body_value_steps + S ff_i_ph_hd_hpl_pair_body_value_steps = l) -> exists ff_coefficient_ph_hd_hpl_pair_body_value_steps ff_previous_ph_hd_hpl_pair_body_value_steps ff_current_ph_hd_hpl_pair_body_value_steps. ((((exists fs_h_ph_hd_hpl_pair_body_value_steps_coefficient. fs_h_ph_hd_hpl_pair_body_value_steps_coefficient + S (ff_coefficient_ph_hd_hpl_pair_body_value_steps) = S ((S (ff_i_ph_hd_hpl_pair_body_value_steps)) * pc)) /\ exists fs_q_ph_hd_hpl_pair_body_value_steps_coefficient. pb = fs_q_ph_hd_hpl_pair_body_value_steps_coefficient * S ((S (ff_i_ph_hd_hpl_pair_body_value_steps)) * pc) + (ff_coefficient_ph_hd_hpl_pair_body_value_steps))) /\ ((((exists fs_h_ph_hd_hpl_pair_body_value_steps_before. fs_h_ph_hd_hpl_pair_body_value_steps_before + S (ff_previous_ph_hd_hpl_pair_body_value_steps) = S ((S (ff_i_ph_hd_hpl_pair_body_value_steps)) * ff_v_hd_hpl_pair)) /\ exists fs_q_ph_hd_hpl_pair_body_value_steps_before. ff_u_hd_hpl_pair = fs_q_ph_hd_hpl_pair_body_value_steps_before * S ((S (ff_i_ph_hd_hpl_pair_body_value_steps)) * ff_v_hd_hpl_pair) + (ff_previous_ph_hd_hpl_pair_body_value_steps))) /\ ((((exists fs_h_ph_hd_hpl_pair_body_value_steps_after. fs_h_ph_hd_hpl_pair_body_value_steps_after + S (ff_current_ph_hd_hpl_pair_body_value_steps) = S ((S (S ff_i_ph_hd_hpl_pair_body_value_steps)) * ff_v_hd_hpl_pair)) /\ exists fs_q_ph_hd_hpl_pair_body_value_steps_after. ff_u_hd_hpl_pair = fs_q_ph_hd_hpl_pair_body_value_steps_after * S ((S (S ff_i_ph_hd_hpl_pair_body_value_steps)) * ff_v_hd_hpl_pair) + (ff_current_ph_hd_hpl_pair_body_value_steps))) /\ ff_current_ph_hd_hpl_pair_body_value_steps = ff_previous_ph_hd_hpl_pair_body_value_steps * a + ff_coefficient_ph_hd_hpl_pair_body_value_steps)))))) /\ (((((exists fs_h_ph_hd_hpl_pair_body_derivative_start. fs_h_ph_hd_hpl_pair_body_derivative_start + S (0) = S ((S (0)) * ff_e_hd_hpl_pair)) /\ exists fs_q_ph_hd_hpl_pair_body_derivative_start. ff_d_hd_hpl_pair = fs_q_ph_hd_hpl_pair_body_derivative_start * S ((S (0)) * ff_e_hd_hpl_pair) + (0))) /\ ((((exists fs_h_ph_hd_hpl_pair_body_derivative_terminal. fs_h_ph_hd_hpl_pair_body_derivative_terminal + S (dp) = S ((S (l)) * ff_e_hd_hpl_pair)) /\ exists fs_q_ph_hd_hpl_pair_body_derivative_terminal. ff_d_hd_hpl_pair = fs_q_ph_hd_hpl_pair_body_derivative_terminal * S ((S (l)) * ff_e_hd_hpl_pair) + (dp))) /\ forall ff_i_ph_hd_hpl_pair_body_derivative_steps. (exists ph_bound_hd_hpl_pair_body_derivative_steps. ph_bound_hd_hpl_pair_body_derivative_steps + S ff_i_ph_hd_hpl_pair_body_derivative_steps = l) -> exists ff_coefficient_ph_hd_hpl_pair_body_derivative_steps ff_previous_ph_hd_hpl_pair_body_derivative_steps ff_current_ph_hd_hpl_pair_body_derivative_steps. ((((exists fs_h_ph_hd_hpl_pair_body_derivative_steps_coefficient. fs_h_ph_hd_hpl_pair_body_derivative_steps_coefficient + S (ff_coefficient_ph_hd_hpl_pair_body_derivative_steps) = S ((S (ff_i_ph_hd_hpl_pair_body_derivative_steps)) * ff_v_hd_hpl_pair)) /\ exists fs_q_ph_hd_hpl_pair_body_derivative_steps_coefficient. ff_u_hd_hpl_pair = fs_q_ph_hd_hpl_pair_body_derivative_steps_coefficient * S ((S (ff_i_ph_hd_hpl_pair_body_derivative_steps)) * ff_v_hd_hpl_pair) + (ff_coefficient_ph_hd_hpl_pair_body_derivative_steps))) /\ ((((exists fs_h_ph_hd_hpl_pair_body_derivative_steps_before. fs_h_ph_hd_hpl_pair_body_derivative_steps_before + S (ff_previous_ph_hd_hpl_pair_body_derivative_steps) = S ((S (ff_i_ph_hd_hpl_pair_body_derivative_steps)) * ff_e_hd_hpl_pair)) /\ exists fs_q_ph_hd_hpl_pair_body_derivative_steps_before. ff_d_hd_hpl_pair = fs_q_ph_hd_hpl_pair_body_derivative_steps_before * S ((S (ff_i_ph_hd_hpl_pair_body_derivative_steps)) * ff_e_hd_hpl_pair) + (ff_previous_ph_hd_hpl_pair_body_derivative_steps))) /\ ((((exists fs_h_ph_hd_hpl_pair_body_derivative_steps_after. fs_h_ph_hd_hpl_pair_body_derivative_steps_after + S (ff_current_ph_hd_hpl_pair_body_derivative_steps) = S ((S (S ff_i_ph_hd_hpl_pair_body_derivative_steps)) * ff_e_hd_hpl_pair)) /\ exists fs_q_ph_hd_hpl_pair_body_derivative_steps_after. ff_d_hd_hpl_pair = fs_q_ph_hd_hpl_pair_body_derivative_steps_after * S ((S (S ff_i_ph_hd_hpl_pair_body_derivative_steps)) * ff_e_hd_hpl_pair) + (ff_current_ph_hd_hpl_pair_body_derivative_steps))) /\ ff_current_ph_hd_hpl_pair_body_derivative_steps = ff_previous_ph_hd_hpl_pair_body_derivative_steps * a + ff_coefficient_ph_hd_hpl_pair_body_derivative_steps))))))))
  10. 0010specialize beta_horner_derivative_value_exists pb
  11. 0011specialize beta_horner_derivative_value_exists pc
  12. 0012specialize beta_horner_derivative_value_exists a
  13. 0013specialize beta_horner_derivative_value_exists l
  14. 0014apply beta_horner_derivative_value_exists
  15. 0015cases hP
  16. 0016cases hP_witness
  17. 0017have hN : exists vn dn. (exists ff_u_hd_hpl_pair ff_v_hd_hpl_pair ff_d_hd_hpl_pair ff_e_hd_hpl_pair. ((((((exists fs_h_ph_hd_hpl_pair_body_value_start. fs_h_ph_hd_hpl_pair_body_value_start + S (0) = S ((S (0)) * ff_v_hd_hpl_pair)) /\ exists fs_q_ph_hd_hpl_pair_body_value_start. ff_u_hd_hpl_pair = fs_q_ph_hd_hpl_pair_body_value_start * S ((S (0)) * ff_v_hd_hpl_pair) + (0))) /\ ((((exists fs_h_ph_hd_hpl_pair_body_value_terminal. fs_h_ph_hd_hpl_pair_body_value_terminal + S (vn) = S ((S (l)) * ff_v_hd_hpl_pair)) /\ exists fs_q_ph_hd_hpl_pair_body_value_terminal. ff_u_hd_hpl_pair = fs_q_ph_hd_hpl_pair_body_value_terminal * S ((S (l)) * ff_v_hd_hpl_pair) + (vn))) /\ forall ff_i_ph_hd_hpl_pair_body_value_steps. (exists ph_bound_hd_hpl_pair_body_value_steps. ph_bound_hd_hpl_pair_body_value_steps + S ff_i_ph_hd_hpl_pair_body_value_steps = l) -> exists ff_coefficient_ph_hd_hpl_pair_body_value_steps ff_previous_ph_hd_hpl_pair_body_value_steps ff_current_ph_hd_hpl_pair_body_value_steps. ((((exists fs_h_ph_hd_hpl_pair_body_value_steps_coefficient. fs_h_ph_hd_hpl_pair_body_value_steps_coefficient + S (ff_coefficient_ph_hd_hpl_pair_body_value_steps) = S ((S (ff_i_ph_hd_hpl_pair_body_value_steps)) * nc)) /\ exists fs_q_ph_hd_hpl_pair_body_value_steps_coefficient. nb = fs_q_ph_hd_hpl_pair_body_value_steps_coefficient * S ((S (ff_i_ph_hd_hpl_pair_body_value_steps)) * nc) + (ff_coefficient_ph_hd_hpl_pair_body_value_steps))) /\ ((((exists fs_h_ph_hd_hpl_pair_body_value_steps_before. fs_h_ph_hd_hpl_pair_body_value_steps_before + S (ff_previous_ph_hd_hpl_pair_body_value_steps) = S ((S (ff_i_ph_hd_hpl_pair_body_value_steps)) * ff_v_hd_hpl_pair)) /\ exists fs_q_ph_hd_hpl_pair_body_value_steps_before. ff_u_hd_hpl_pair = fs_q_ph_hd_hpl_pair_body_value_steps_before * S ((S (ff_i_ph_hd_hpl_pair_body_value_steps)) * ff_v_hd_hpl_pair) + (ff_previous_ph_hd_hpl_pair_body_value_steps))) /\ ((((exists fs_h_ph_hd_hpl_pair_body_value_steps_after. fs_h_ph_hd_hpl_pair_body_value_steps_after + S (ff_current_ph_hd_hpl_pair_body_value_steps) = S ((S (S ff_i_ph_hd_hpl_pair_body_value_steps)) * ff_v_hd_hpl_pair)) /\ exists fs_q_ph_hd_hpl_pair_body_value_steps_after. ff_u_hd_hpl_pair = fs_q_ph_hd_hpl_pair_body_value_steps_after * S ((S (S ff_i_ph_hd_hpl_pair_body_value_steps)) * ff_v_hd_hpl_pair) + (ff_current_ph_hd_hpl_pair_body_value_steps))) /\ ff_current_ph_hd_hpl_pair_body_value_steps = ff_previous_ph_hd_hpl_pair_body_value_steps * a + ff_coefficient_ph_hd_hpl_pair_body_value_steps)))))) /\ (((((exists fs_h_ph_hd_hpl_pair_body_derivative_start. fs_h_ph_hd_hpl_pair_body_derivative_start + S (0) = S ((S (0)) * ff_e_hd_hpl_pair)) /\ exists fs_q_ph_hd_hpl_pair_body_derivative_start. ff_d_hd_hpl_pair = fs_q_ph_hd_hpl_pair_body_derivative_start * S ((S (0)) * ff_e_hd_hpl_pair) + (0))) /\ ((((exists fs_h_ph_hd_hpl_pair_body_derivative_terminal. fs_h_ph_hd_hpl_pair_body_derivative_terminal + S (dn) = S ((S (l)) * ff_e_hd_hpl_pair)) /\ exists fs_q_ph_hd_hpl_pair_body_derivative_terminal. ff_d_hd_hpl_pair = fs_q_ph_hd_hpl_pair_body_derivative_terminal * S ((S (l)) * ff_e_hd_hpl_pair) + (dn))) /\ forall ff_i_ph_hd_hpl_pair_body_derivative_steps. (exists ph_bound_hd_hpl_pair_body_derivative_steps. ph_bound_hd_hpl_pair_body_derivative_steps + S ff_i_ph_hd_hpl_pair_body_derivative_steps = l) -> exists ff_coefficient_ph_hd_hpl_pair_body_derivative_steps ff_previous_ph_hd_hpl_pair_body_derivative_steps ff_current_ph_hd_hpl_pair_body_derivative_steps. ((((exists fs_h_ph_hd_hpl_pair_body_derivative_steps_coefficient. fs_h_ph_hd_hpl_pair_body_derivative_steps_coefficient + S (ff_coefficient_ph_hd_hpl_pair_body_derivative_steps) = S ((S (ff_i_ph_hd_hpl_pair_body_derivative_steps)) * ff_v_hd_hpl_pair)) /\ exists fs_q_ph_hd_hpl_pair_body_derivative_steps_coefficient. ff_u_hd_hpl_pair = fs_q_ph_hd_hpl_pair_body_derivative_steps_coefficient * S ((S (ff_i_ph_hd_hpl_pair_body_derivative_steps)) * ff_v_hd_hpl_pair) + (ff_coefficient_ph_hd_hpl_pair_body_derivative_steps))) /\ ((((exists fs_h_ph_hd_hpl_pair_body_derivative_steps_before. fs_h_ph_hd_hpl_pair_body_derivative_steps_before + S (ff_previous_ph_hd_hpl_pair_body_derivative_steps) = S ((S (ff_i_ph_hd_hpl_pair_body_derivative_steps)) * ff_e_hd_hpl_pair)) /\ exists fs_q_ph_hd_hpl_pair_body_derivative_steps_before. ff_d_hd_hpl_pair = fs_q_ph_hd_hpl_pair_body_derivative_steps_before * S ((S (ff_i_ph_hd_hpl_pair_body_derivative_steps)) * ff_e_hd_hpl_pair) + (ff_previous_ph_hd_hpl_pair_body_derivative_steps))) /\ ((((exists fs_h_ph_hd_hpl_pair_body_derivative_steps_after. fs_h_ph_hd_hpl_pair_body_derivative_steps_after + S (ff_current_ph_hd_hpl_pair_body_derivative_steps) = S ((S (S ff_i_ph_hd_hpl_pair_body_derivative_steps)) * ff_e_hd_hpl_pair)) /\ exists fs_q_ph_hd_hpl_pair_body_derivative_steps_after. ff_d_hd_hpl_pair = fs_q_ph_hd_hpl_pair_body_derivative_steps_after * S ((S (S ff_i_ph_hd_hpl_pair_body_derivative_steps)) * ff_e_hd_hpl_pair) + (ff_current_ph_hd_hpl_pair_body_derivative_steps))) /\ ff_current_ph_hd_hpl_pair_body_derivative_steps = ff_previous_ph_hd_hpl_pair_body_derivative_steps * a + ff_coefficient_ph_hd_hpl_pair_body_derivative_steps))))))))
  18. 0018specialize beta_horner_derivative_value_exists nb
  19. 0019specialize beta_horner_derivative_value_exists nc
  20. 0020specialize beta_horner_derivative_value_exists a
  21. 0021specialize beta_horner_derivative_value_exists l
  22. 0022apply beta_horner_derivative_value_exists
  23. 0023cases hN
  24. 0024cases hN_witness
  25. 0025cases hroot
  26. 0026cases hroot_witness
  27. 0027cases hroot_witness_witness
  28. 0028cases hroot_witness_witness_right
  29. 0029have hpositive : x = x4
  30. 0030specialize beta_horner_eval_functional pb
  31. 0031specialize beta_horner_eval_functional pc
  32. 0032specialize beta_horner_eval_functional a
  33. 0033specialize beta_horner_eval_functional l
  34. 0034specialize beta_horner_eval_functional x
  35. 0035specialize beta_horner_eval_functional x4
  36. 0036apply beta_horner_eval_functional
  37. 0037specialize beta_horner_derivative_value_projection pb
  38. 0038specialize beta_horner_derivative_value_projection pc
  39. 0039specialize beta_horner_derivative_value_projection a
  40. 0040specialize beta_horner_derivative_value_projection l
  41. 0041specialize beta_horner_derivative_value_projection x
  42. 0042specialize beta_horner_derivative_value_projection x1
  43. 0043apply beta_horner_derivative_value_projection
  44. 0044exact hP_witness_witness
  45. 0045exact hroot_witness_witness_left
  46. 0046have hnegative : x2 = x5
  47. 0047specialize beta_horner_eval_functional nb
  48. 0048specialize beta_horner_eval_functional nc
  49. 0049specialize beta_horner_eval_functional a
  50. 0050specialize beta_horner_eval_functional l
  51. 0051specialize beta_horner_eval_functional x2
  52. 0052specialize beta_horner_eval_functional x5
  53. 0053apply beta_horner_eval_functional
  54. 0054specialize beta_horner_derivative_value_projection nb
  55. 0055specialize beta_horner_derivative_value_projection nc
  56. 0056specialize beta_horner_derivative_value_projection a
  57. 0057specialize beta_horner_derivative_value_projection l
  58. 0058specialize beta_horner_derivative_value_projection x2
  59. 0059specialize beta_horner_derivative_value_projection x3
  60. 0060apply beta_horner_derivative_value_projection
  61. 0061exact hN_witness_witness
  62. 0062exact hroot_witness_witness_right_left
  63. 0063exists x
  64. 0064exists x1
  65. 0065exists x2
  66. 0066exists x3
  67. 0067split
  68. 0068split
  69. 0069exact hP_witness_witness
  70. 0070exact hN_witness_witness
  71. 0071rewrite hpositive
  72. 0072rewrite hnegative
  73. 0073exact hroot_witness_witness_right_right