BT00Q1

pow_nonzero_of_one_le

Alpha body-checked ยท checked-use disabled

A relational power of a base at least one cannot be zero.

Exact expanded PA statement

forall a e x. (exists bpg_gap_base. bpg_gap_base + (1) = (a)) -> (exists ff_b_bpg_value ff_c_bpg_value. ((forall ff_i_bpg_value_repeat. (exists ff_lt_bpg_value_repeat_bound. ff_lt_bpg_value_repeat_bound + S ff_i_bpg_value_repeat = e) -> (((exists ff_h_bpg_value_repeat_decoded. ff_h_bpg_value_repeat_decoded + S (a) = S ((S (ff_i_bpg_value_repeat)) * ff_c_bpg_value)) /\ exists ff_q_bpg_value_repeat_decoded. ff_b_bpg_value = ff_q_bpg_value_repeat_decoded * S ((S (ff_i_bpg_value_repeat)) * ff_c_bpg_value) + (a)))) /\ (exists ff_u_bpg_value_product ff_v_bpg_value_product. ((((exists ff_h_bpg_value_product_start. ff_h_bpg_value_product_start + S (1) = S ((S (0)) * ff_v_bpg_value_product)) /\ exists ff_q_bpg_value_product_start. ff_u_bpg_value_product = ff_q_bpg_value_product_start * S ((S (0)) * ff_v_bpg_value_product) + (1))) /\ ((((exists ff_h_bpg_value_product_terminal. ff_h_bpg_value_product_terminal + S (x) = S ((S (e)) * ff_v_bpg_value_product)) /\ exists ff_q_bpg_value_product_terminal. ff_u_bpg_value_product = ff_q_bpg_value_product_terminal * S ((S (e)) * ff_v_bpg_value_product) + (x))) /\ forall ff_i_bpg_value_product. (exists ff_lt_bpg_value_product_bound. ff_lt_bpg_value_product_bound + S ff_i_bpg_value_product = e) -> exists ff_p_bpg_value_product ff_r_bpg_value_product ff_s_bpg_value_product. ((((exists ff_h_bpg_value_product_factor. ff_h_bpg_value_product_factor + S (ff_p_bpg_value_product) = S ((S (ff_i_bpg_value_product)) * ff_c_bpg_value)) /\ exists ff_q_bpg_value_product_factor. ff_b_bpg_value = ff_q_bpg_value_product_factor * S ((S (ff_i_bpg_value_product)) * ff_c_bpg_value) + (ff_p_bpg_value_product))) /\ ((((exists ff_h_bpg_value_product_partial. ff_h_bpg_value_product_partial + S (ff_r_bpg_value_product) = S ((S (ff_i_bpg_value_product)) * ff_v_bpg_value_product)) /\ exists ff_q_bpg_value_product_partial. ff_u_bpg_value_product = ff_q_bpg_value_product_partial * S ((S (ff_i_bpg_value_product)) * ff_v_bpg_value_product) + (ff_r_bpg_value_product))) /\ ((((exists ff_h_bpg_value_product_successor. ff_h_bpg_value_product_successor + S (ff_s_bpg_value_product) = S ((S (S ff_i_bpg_value_product)) * ff_v_bpg_value_product)) /\ exists ff_q_bpg_value_product_successor. ff_u_bpg_value_product = ff_q_bpg_value_product_successor * S ((S (S ff_i_bpg_value_product)) * ff_v_bpg_value_product) + (ff_s_bpg_value_product))) /\ ff_s_bpg_value_product = ff_r_bpg_value_product * ff_p_bpg_value_product)))))))) -> ~(x = 0)

Structural proof guide

A relational power of a base at least one cannot be zero.

Direct prerequisites: one_le_pow, ne_zero_of_one_le. The authored body proceeds by intermediate claims (1).

Proof neighborhood

Direct dependencies

Direct dependents

Formal native tactic body

Dependencies are hypotheses of this body receipt. The focused endpoint audits separately check the complete empty-context certificates.

  1. 0001intro a
  2. 0002intro e
  3. 0003intro x
  4. 0004intro ha
  5. 0005intro hx
  6. 0006have hx1 : exists bpg_gap_value. bpg_gap_value + (1) = (x)
  7. 0007specialize one_le_pow a
  8. 0008specialize one_le_pow e
  9. 0009specialize one_le_pow x
  10. 0010apply one_le_pow
  11. 0011exact ha
  12. 0012exact hx
  13. 0013intro hx0
  14. 0014specialize ne_zero_of_one_le x
  15. 0015apply ne_zero_of_one_le
  16. 0016exact hx1
  17. 0017exact hx0