BT00VI

primorial_even_interval_le_central

Alpha v34 checked-use theorem · independently kernel and Lean verified; not Stable

The even Primorial interval is bounded by the central coefficient.

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 PA statement

forall n z c. (exists bpr_code_bpeidc_interval bpr_scale_bpeidc_interval. ((forall bpr_index_bpeidc_interval_mask. (exists bpr_gap_bpeidc_interval_mask_bound. bpr_gap_bpeidc_interval_mask_bound + S (bpr_index_bpeidc_interval_mask) = n) -> exists bpr_value_bpeidc_interval_mask. ((((exists bpr_height_bpeidc_interval_mask_decoded. bpr_height_bpeidc_interval_mask_decoded + S (bpr_value_bpeidc_interval_mask) = S ((S (bpr_index_bpeidc_interval_mask)) * bpr_scale_bpeidc_interval)) /\ exists bpr_quotient_bpeidc_interval_mask_decoded. bpr_code_bpeidc_interval = bpr_quotient_bpeidc_interval_mask_decoded * S ((S (bpr_index_bpeidc_interval_mask)) * bpr_scale_bpeidc_interval) + (bpr_value_bpeidc_interval_mask))) /\ (((((~(S (n + bpr_index_bpeidc_interval_mask) = 1) /\ forall bpr_left_bpeidc_interval_mask_choice_prime bpr_right_bpeidc_interval_mask_choice_prime. S (n + bpr_index_bpeidc_interval_mask) = bpr_left_bpeidc_interval_mask_choice_prime * bpr_right_bpeidc_interval_mask_choice_prime -> bpr_left_bpeidc_interval_mask_choice_prime = 1 \/ bpr_right_bpeidc_interval_mask_choice_prime = 1)) /\ bpr_value_bpeidc_interval_mask = S (n + bpr_index_bpeidc_interval_mask)) \/ (~((~(S (n + bpr_index_bpeidc_interval_mask) = 1) /\ forall bpr_left_bpeidc_interval_mask_choice_prime bpr_right_bpeidc_interval_mask_choice_prime. S (n + bpr_index_bpeidc_interval_mask) = bpr_left_bpeidc_interval_mask_choice_prime * bpr_right_bpeidc_interval_mask_choice_prime -> bpr_left_bpeidc_interval_mask_choice_prime = 1 \/ bpr_right_bpeidc_interval_mask_choice_prime = 1)) /\ bpr_value_bpeidc_interval_mask = 1))))) /\ (exists ff_u_bpeidc_interval_product ff_v_bpeidc_interval_product. ((((exists ff_h_bpeidc_interval_product_start. ff_h_bpeidc_interval_product_start + S (1) = S ((S (0)) * ff_v_bpeidc_interval_product)) /\ exists ff_q_bpeidc_interval_product_start. ff_u_bpeidc_interval_product = ff_q_bpeidc_interval_product_start * S ((S (0)) * ff_v_bpeidc_interval_product) + (1))) /\ ((((exists ff_h_bpeidc_interval_product_terminal. ff_h_bpeidc_interval_product_terminal + S (z) = S ((S (n)) * ff_v_bpeidc_interval_product)) /\ exists ff_q_bpeidc_interval_product_terminal. ff_u_bpeidc_interval_product = ff_q_bpeidc_interval_product_terminal * S ((S (n)) * ff_v_bpeidc_interval_product) + (z))) /\ forall ff_i_bpeidc_interval_product. (exists ff_lt_bpeidc_interval_product_bound. ff_lt_bpeidc_interval_product_bound + S ff_i_bpeidc_interval_product = n) -> exists ff_p_bpeidc_interval_product ff_r_bpeidc_interval_product ff_s_bpeidc_interval_product. ((((exists ff_h_bpeidc_interval_product_factor. ff_h_bpeidc_interval_product_factor + S (ff_p_bpeidc_interval_product) = S ((S (ff_i_bpeidc_interval_product)) * bpr_scale_bpeidc_interval)) /\ exists ff_q_bpeidc_interval_product_factor. bpr_code_bpeidc_interval = ff_q_bpeidc_interval_product_factor * S ((S (ff_i_bpeidc_interval_product)) * bpr_scale_bpeidc_interval) + (ff_p_bpeidc_interval_product))) /\ ((((exists ff_h_bpeidc_interval_product_partial. ff_h_bpeidc_interval_product_partial + S (ff_r_bpeidc_interval_product) = S ((S (ff_i_bpeidc_interval_product)) * ff_v_bpeidc_interval_product)) /\ exists ff_q_bpeidc_interval_product_partial. ff_u_bpeidc_interval_product = ff_q_bpeidc_interval_product_partial * S ((S (ff_i_bpeidc_interval_product)) * ff_v_bpeidc_interval_product) + (ff_r_bpeidc_interval_product))) /\ ((((exists ff_h_bpeidc_interval_product_successor. ff_h_bpeidc_interval_product_successor + S (ff_s_bpeidc_interval_product) = S ((S (S ff_i_bpeidc_interval_product)) * ff_v_bpeidc_interval_product)) /\ exists ff_q_bpeidc_interval_product_successor. ff_u_bpeidc_interval_product = ff_q_bpeidc_interval_product_successor * S ((S (S ff_i_bpeidc_interval_product)) * ff_v_bpeidc_interval_product) + (ff_s_bpeidc_interval_product))) /\ ff_s_bpeidc_interval_product = ff_r_bpeidc_interval_product * ff_p_bpeidc_interval_product)))))))) -> (((exists bcf_lt_gap_bpeidc_central_out_of_range. bcf_lt_gap_bpeidc_central_out_of_range + S (n + n) = n) /\ c = 0) \/ ((exists bcf_le_gap_bpeidc_central_in_range. bcf_le_gap_bpeidc_central_in_range + (n) = n + n) /\ (exists bcf_row_code_code_bpeidc_central bcf_row_code_scale_bpeidc_central bcf_row_scale_code_bpeidc_central bcf_row_scale_scale_bpeidc_central bcf_row_code_bpeidc_central bcf_row_scale_bpeidc_central. ((forall bcf_row_index_bpeidc_central_table. (exists bcf_lt_gap_bpeidc_central_table_row_bound. bcf_lt_gap_bpeidc_central_table_row_bound + S (bcf_row_index_bpeidc_central_table) = S (n + n)) -> exists bcf_row_code_bpeidc_central_table bcf_row_scale_bpeidc_central_table. ((((exists bcf_height_bpeidc_central_table_decoded_row_code. bcf_height_bpeidc_central_table_decoded_row_code + S (bcf_row_code_bpeidc_central_table) = S ((S (bcf_row_index_bpeidc_central_table)) * bcf_row_code_scale_bpeidc_central)) /\ exists bcf_quotient_bpeidc_central_table_decoded_row_code. bcf_row_code_code_bpeidc_central = bcf_quotient_bpeidc_central_table_decoded_row_code * S ((S (bcf_row_index_bpeidc_central_table)) * bcf_row_code_scale_bpeidc_central) + (bcf_row_code_bpeidc_central_table))) /\ ((((exists bcf_height_bpeidc_central_table_decoded_row_scale. bcf_height_bpeidc_central_table_decoded_row_scale + S (bcf_row_scale_bpeidc_central_table) = S ((S (bcf_row_index_bpeidc_central_table)) * bcf_row_scale_scale_bpeidc_central)) /\ exists bcf_quotient_bpeidc_central_table_decoded_row_scale. bcf_row_scale_code_bpeidc_central = bcf_quotient_bpeidc_central_table_decoded_row_scale * S ((S (bcf_row_index_bpeidc_central_table)) * bcf_row_scale_scale_bpeidc_central) + (bcf_row_scale_bpeidc_central_table))) /\ ((bcf_row_index_bpeidc_central_table = 0 /\ (forall bcf_index_bpeidc_central_table_zero_row. (exists bcf_lt_gap_bpeidc_central_table_zero_row_bound. bcf_lt_gap_bpeidc_central_table_zero_row_bound + S (bcf_index_bpeidc_central_table_zero_row) = S (n + n)) -> exists bcf_value_bpeidc_central_table_zero_row. ((((exists bcf_height_bpeidc_central_table_zero_row_entry. bcf_height_bpeidc_central_table_zero_row_entry + S (bcf_value_bpeidc_central_table_zero_row) = S ((S (bcf_index_bpeidc_central_table_zero_row)) * bcf_row_scale_bpeidc_central_table)) /\ exists bcf_quotient_bpeidc_central_table_zero_row_entry. bcf_row_code_bpeidc_central_table = bcf_quotient_bpeidc_central_table_zero_row_entry * S ((S (bcf_index_bpeidc_central_table_zero_row)) * bcf_row_scale_bpeidc_central_table) + (bcf_value_bpeidc_central_table_zero_row))) /\ ((bcf_index_bpeidc_central_table_zero_row = 0 /\ bcf_value_bpeidc_central_table_zero_row = 1) \/ exists bcf_predecessor_bpeidc_central_table_zero_row. bcf_index_bpeidc_central_table_zero_row = S bcf_predecessor_bpeidc_central_table_zero_row /\ bcf_value_bpeidc_central_table_zero_row = 0)))) \/ exists bcf_predecessor_bpeidc_central_table bcf_previous_code_bpeidc_central_table bcf_previous_scale_bpeidc_central_table. bcf_row_index_bpeidc_central_table = S bcf_predecessor_bpeidc_central_table /\ ((((exists bcf_height_bpeidc_central_table_decoded_previous_code. bcf_height_bpeidc_central_table_decoded_previous_code + S (bcf_previous_code_bpeidc_central_table) = S ((S (bcf_predecessor_bpeidc_central_table)) * bcf_row_code_scale_bpeidc_central)) /\ exists bcf_quotient_bpeidc_central_table_decoded_previous_code. bcf_row_code_code_bpeidc_central = bcf_quotient_bpeidc_central_table_decoded_previous_code * S ((S (bcf_predecessor_bpeidc_central_table)) * bcf_row_code_scale_bpeidc_central) + (bcf_previous_code_bpeidc_central_table))) /\ ((((exists bcf_height_bpeidc_central_table_decoded_previous_scale. bcf_height_bpeidc_central_table_decoded_previous_scale + S (bcf_previous_scale_bpeidc_central_table) = S ((S (bcf_predecessor_bpeidc_central_table)) * bcf_row_scale_scale_bpeidc_central)) /\ exists bcf_quotient_bpeidc_central_table_decoded_previous_scale. bcf_row_scale_code_bpeidc_central = bcf_quotient_bpeidc_central_table_decoded_previous_scale * S ((S (bcf_predecessor_bpeidc_central_table)) * bcf_row_scale_scale_bpeidc_central) + (bcf_previous_scale_bpeidc_central_table))) /\ (forall bcf_index_bpeidc_central_table_row_step. (exists bcf_lt_gap_bpeidc_central_table_row_step_bound. bcf_lt_gap_bpeidc_central_table_row_step_bound + S (bcf_index_bpeidc_central_table_row_step) = S (n + n)) -> exists bcf_value_bpeidc_central_table_row_step. ((((exists bcf_height_bpeidc_central_table_row_step_entry. bcf_height_bpeidc_central_table_row_step_entry + S (bcf_value_bpeidc_central_table_row_step) = S ((S (bcf_index_bpeidc_central_table_row_step)) * bcf_row_scale_bpeidc_central_table)) /\ exists bcf_quotient_bpeidc_central_table_row_step_entry. bcf_row_code_bpeidc_central_table = bcf_quotient_bpeidc_central_table_row_step_entry * S ((S (bcf_index_bpeidc_central_table_row_step)) * bcf_row_scale_bpeidc_central_table) + (bcf_value_bpeidc_central_table_row_step))) /\ ((bcf_index_bpeidc_central_table_row_step = 0 /\ bcf_value_bpeidc_central_table_row_step = 1) \/ exists bcf_predecessor_bpeidc_central_table_row_step bcf_left_bpeidc_central_table_row_step bcf_right_bpeidc_central_table_row_step. bcf_index_bpeidc_central_table_row_step = S bcf_predecessor_bpeidc_central_table_row_step /\ ((((exists bcf_height_bpeidc_central_table_row_step_previous_left. bcf_height_bpeidc_central_table_row_step_previous_left + S (bcf_left_bpeidc_central_table_row_step) = S ((S (bcf_predecessor_bpeidc_central_table_row_step)) * bcf_previous_scale_bpeidc_central_table)) /\ exists bcf_quotient_bpeidc_central_table_row_step_previous_left. bcf_previous_code_bpeidc_central_table = bcf_quotient_bpeidc_central_table_row_step_previous_left * S ((S (bcf_predecessor_bpeidc_central_table_row_step)) * bcf_previous_scale_bpeidc_central_table) + (bcf_left_bpeidc_central_table_row_step))) /\ ((((exists bcf_height_bpeidc_central_table_row_step_previous_right. bcf_height_bpeidc_central_table_row_step_previous_right + S (bcf_right_bpeidc_central_table_row_step) = S ((S (S (bcf_predecessor_bpeidc_central_table_row_step))) * bcf_previous_scale_bpeidc_central_table)) /\ exists bcf_quotient_bpeidc_central_table_row_step_previous_right. bcf_previous_code_bpeidc_central_table = bcf_quotient_bpeidc_central_table_row_step_previous_right * S ((S (S (bcf_predecessor_bpeidc_central_table_row_step))) * bcf_previous_scale_bpeidc_central_table) + (bcf_right_bpeidc_central_table_row_step))) /\ bcf_value_bpeidc_central_table_row_step = bcf_left_bpeidc_central_table_row_step + bcf_right_bpeidc_central_table_row_step))))))))))) /\ ((((exists bcf_height_bpeidc_central_decoded_row_code. bcf_height_bpeidc_central_decoded_row_code + S (bcf_row_code_bpeidc_central) = S ((S (n + n)) * bcf_row_code_scale_bpeidc_central)) /\ exists bcf_quotient_bpeidc_central_decoded_row_code. bcf_row_code_code_bpeidc_central = bcf_quotient_bpeidc_central_decoded_row_code * S ((S (n + n)) * bcf_row_code_scale_bpeidc_central) + (bcf_row_code_bpeidc_central))) /\ ((((exists bcf_height_bpeidc_central_decoded_row_scale. bcf_height_bpeidc_central_decoded_row_scale + S (bcf_row_scale_bpeidc_central) = S ((S (n + n)) * bcf_row_scale_scale_bpeidc_central)) /\ exists bcf_quotient_bpeidc_central_decoded_row_scale. bcf_row_scale_code_bpeidc_central = bcf_quotient_bpeidc_central_decoded_row_scale * S ((S (n + n)) * bcf_row_scale_scale_bpeidc_central) + (bcf_row_scale_bpeidc_central))) /\ (((exists bcf_height_bpeidc_central_decoded_value. bcf_height_bpeidc_central_decoded_value + S (c) = S ((S (n)) * bcf_row_scale_bpeidc_central)) /\ exists bcf_quotient_bpeidc_central_decoded_value. bcf_row_code_bpeidc_central = bcf_quotient_bpeidc_central_decoded_value * S ((S (n)) * bcf_row_scale_bpeidc_central) + (c))))))))) -> (exists bpr_le_gap_bpeilc_result. bpr_le_gap_bpeilc_result + (z) = (c))

Structural proof guide

The even Primorial interval is bounded by the central coefficient.

Direct prerequisites: primorial_even_interval_divides_central, central_binom_positive, divisor_le_nonzero. The authored body proceeds by case analysis (1), intermediate claims (2), equality transport (1).

Proof neighborhood

Direct dependencies

Direct dependents

Formal native tactic body

Dependencies are hypotheses of the historical Alpha-v12 body receipt. The complete historical Alpha-v18 proof bundle independently checks every dependency; current Alpha v25 preserves that checked theorem use without changing Stable membership.

Read the argument

Proof checkpoints

24 script commands · 7 reading checkpoints · 2 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.

Named ingredients (3)
01Fix variables and assumptionsL1–5

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

  1. L1
    intro n
  2. L2
    intro z
  3. L3
    intro c
  4. L4
    intro hinterval
  5. L5
    intro hcentral
02Establish hdividesL6–9

Establish this local claim before using it. It is not an additional assumption. The following proof commands apply primorial even interval divides central.

  1. L6
    have hdivides : exists q. c = z * q
  2. L7
    apply primorial_even_interval_divides_central
  3. L8
    exact hinterval
  4. L9
    exact hcentral
03Establish hpositiveL10–19

Establish this local claim before using it. It is not an additional assumption. The following proof commands apply central binom positive.

  1. L10
    have hpositive : exists r. c = S r
  2. L11
    specialize central_binom_positive n
  3. L12
    specialize central_binom_positive c
  4. L13
    apply central_binom_positive
  5. L14
    exact hcentral
  6. L15
    specialize divisor_le_nonzero z
  7. L16
    specialize divisor_le_nonzero c
  8. L17
    apply divisor_le_nonzero
  9. L18
    intro hc
  10. L19
    rewrite hc at hpositive
04Separate the logical casesL20–20

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

  1. L20
    cases hpositive
05Use earlier factsL21–21

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

  1. L21
    apply PA1
06Calculate and transport equalitiesL22–22

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

  1. L22
    symm
07Use earlier factsL23–24

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

  1. L23
    exact hpositive_witness
  2. L24
    exact hdivides

Library-wide reading audit

Original exact command ledger · 24 lines
  1. 0001intro n
  2. 0002intro z
  3. 0003intro c
  4. 0004intro hinterval
  5. 0005intro hcentral
  6. 0006have hdivides : exists q. c = z * q
  7. 0007apply primorial_even_interval_divides_central
  8. 0008exact hinterval
  9. 0009exact hcentral
  10. 0010have hpositive : exists r. c = S r
  11. 0011specialize central_binom_positive n
  12. 0012specialize central_binom_positive c
  13. 0013apply central_binom_positive
  14. 0014exact hcentral
  15. 0015specialize divisor_le_nonzero z
  16. 0016specialize divisor_le_nonzero c
  17. 0017apply divisor_le_nonzero
  18. 0018intro hc
  19. 0019rewrite hc at hpositive
  20. 0020cases hpositive
  21. 0021apply PA1
  22. 0022symm
  23. 0023exact hpositive_witness
  24. 0024exact hdivides