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 b c t n. (exists ff_u_ph_zero ff_v_ph_zero. ((((exists fs_h_ph_zero_body_start. fs_h_ph_zero_body_start + S (0) = S ((S (0)) * ff_v_ph_zero)) /\ exists fs_q_ph_zero_body_start. ff_u_ph_zero = fs_q_ph_zero_body_start * S ((S (0)) * ff_v_ph_zero) + (0))) /\ ((((exists fs_h_ph_zero_body_terminal. fs_h_ph_zero_body_terminal + S (n) = S ((S (0)) * ff_v_ph_zero)) /\ exists fs_q_ph_zero_body_terminal. ff_u_ph_zero = fs_q_ph_zero_body_terminal * S ((S (0)) * ff_v_ph_zero) + (n))) /\ forall ff_i_ph_zero_body_steps. (exists ph_bound_zero_body_steps. ph_bound_zero_body_steps + S ff_i_ph_zero_body_steps = 0) -> exists ff_coefficient_ph_zero_body_steps ff_previous_ph_zero_body_steps ff_current_ph_zero_body_steps. ((((exists fs_h_ph_zero_body_steps_coefficient. fs_h_ph_zero_body_steps_coefficient + S (ff_coefficient_ph_zero_body_steps) = S ((S (ff_i_ph_zero_body_steps)) * c)) /\ exists fs_q_ph_zero_body_steps_coefficient. b = fs_q_ph_zero_body_steps_coefficient * S ((S (ff_i_ph_zero_body_steps)) * c) + (ff_coefficient_ph_zero_body_steps))) /\ ((((exists fs_h_ph_zero_body_steps_before. fs_h_ph_zero_body_steps_before + S (ff_previous_ph_zero_body_steps) = S ((S (ff_i_ph_zero_body_steps)) * ff_v_ph_zero)) /\ exists fs_q_ph_zero_body_steps_before. ff_u_ph_zero = fs_q_ph_zero_body_steps_before * S ((S (ff_i_ph_zero_body_steps)) * ff_v_ph_zero) + (ff_previous_ph_zero_body_steps))) /\ ((((exists fs_h_ph_zero_body_steps_after. fs_h_ph_zero_body_steps_after + S (ff_current_ph_zero_body_steps) = S ((S (S ff_i_ph_zero_body_steps)) * ff_v_ph_zero)) /\ exists fs_q_ph_zero_body_steps_after. ff_u_ph_zero = fs_q_ph_zero_body_steps_after * S ((S (S ff_i_ph_zero_body_steps)) * ff_v_ph_zero) + (ff_current_ph_zero_body_steps))) /\ ff_current_ph_zero_body_steps = ff_previous_ph_zero_body_steps * t + ff_coefficient_ph_zero_body_steps)))))) -> n = 0Constructive proof overview
Generated structural guide
The empty polynomial's exact constructive Horner value is zero.
The unchanged tactic script uses 1 declared prerequisite and contains 17 exact native proof lines.
Alpha v34 checked-use · first admitted v20 · independently kernel and Lean verified; not Stable
Proof neighborhood
Direct dependencies
beta_at_unique Stable theorem; checked-use authorizedDirect 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
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.
01Fix variables and assumptionsL1–5
02Separate the logical casesL6–9
03Use earlier factsL10–17
Instantiate or apply named facts and discharge the corresponding proof obligations.
Original exact command ledger · 17 lines
- 0001
intro b - 0002
intro c - 0003
intro t - 0004
intro n - 0005
intro hsum - 0006
cases hsum - 0007
cases hsum_witness - 0008
cases hsum_witness_witness - 0009
cases hsum_witness_witness_right - 0010
specialize beta_at_unique x - 0011
specialize beta_at_unique x1 - 0012
specialize beta_at_unique 0 - 0013
specialize beta_at_unique n - 0014
specialize beta_at_unique 0 - 0015
apply beta_at_unique - 0016
exact hsum_witness_witness_right_left - 0017
exact hsum_witness_witness_left