BL0006

binary_power_two_functional

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

The relational power of two is functional at every exponent.

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 e p q. (exists pa_b_bl_power pa_c_bl_power. ((forall pa_i_bl_power_repeat. (exists pa_lt_bl_power_repeat_bound. pa_lt_bl_power_repeat_bound + S pa_i_bl_power_repeat = e) -> (((exists pa_h_bl_power_repeat_decoded. pa_h_bl_power_repeat_decoded + S (2) = S ((S (pa_i_bl_power_repeat)) * pa_c_bl_power)) /\ exists pa_q_bl_power_repeat_decoded. pa_b_bl_power = pa_q_bl_power_repeat_decoded * S ((S (pa_i_bl_power_repeat)) * pa_c_bl_power) + (2)))) /\ (exists pa_u_bl_power_product pa_v_bl_power_product. ((((exists pa_h_bl_power_product_start. pa_h_bl_power_product_start + S (1) = S ((S (0)) * pa_v_bl_power_product)) /\ exists pa_q_bl_power_product_start. pa_u_bl_power_product = pa_q_bl_power_product_start * S ((S (0)) * pa_v_bl_power_product) + (1))) /\ ((((exists pa_h_bl_power_product_terminal. pa_h_bl_power_product_terminal + S (p) = S ((S (e)) * pa_v_bl_power_product)) /\ exists pa_q_bl_power_product_terminal. pa_u_bl_power_product = pa_q_bl_power_product_terminal * S ((S (e)) * pa_v_bl_power_product) + (p))) /\ forall pa_i_bl_power_product. (exists pa_lt_bl_power_product_bound. pa_lt_bl_power_product_bound + S pa_i_bl_power_product = e) -> exists pa_p_bl_power_product pa_r_bl_power_product pa_s_bl_power_product. ((((exists pa_h_bl_power_product_factor. pa_h_bl_power_product_factor + S (pa_p_bl_power_product) = S ((S (pa_i_bl_power_product)) * pa_c_bl_power)) /\ exists pa_q_bl_power_product_factor. pa_b_bl_power = pa_q_bl_power_product_factor * S ((S (pa_i_bl_power_product)) * pa_c_bl_power) + (pa_p_bl_power_product))) /\ ((((exists pa_h_bl_power_product_partial. pa_h_bl_power_product_partial + S (pa_r_bl_power_product) = S ((S (pa_i_bl_power_product)) * pa_v_bl_power_product)) /\ exists pa_q_bl_power_product_partial. pa_u_bl_power_product = pa_q_bl_power_product_partial * S ((S (pa_i_bl_power_product)) * pa_v_bl_power_product) + (pa_r_bl_power_product))) /\ ((((exists pa_h_bl_power_product_successor. pa_h_bl_power_product_successor + S (pa_s_bl_power_product) = S ((S (S pa_i_bl_power_product)) * pa_v_bl_power_product)) /\ exists pa_q_bl_power_product_successor. pa_u_bl_power_product = pa_q_bl_power_product_successor * S ((S (S pa_i_bl_power_product)) * pa_v_bl_power_product) + (pa_s_bl_power_product))) /\ pa_s_bl_power_product = pa_r_bl_power_product * pa_p_bl_power_product)))))))) -> (exists pa_b_bl_other_power pa_c_bl_other_power. ((forall pa_i_bl_other_power_repeat. (exists pa_lt_bl_other_power_repeat_bound. pa_lt_bl_other_power_repeat_bound + S pa_i_bl_other_power_repeat = e) -> (((exists pa_h_bl_other_power_repeat_decoded. pa_h_bl_other_power_repeat_decoded + S (2) = S ((S (pa_i_bl_other_power_repeat)) * pa_c_bl_other_power)) /\ exists pa_q_bl_other_power_repeat_decoded. pa_b_bl_other_power = pa_q_bl_other_power_repeat_decoded * S ((S (pa_i_bl_other_power_repeat)) * pa_c_bl_other_power) + (2)))) /\ (exists pa_u_bl_other_power_product pa_v_bl_other_power_product. ((((exists pa_h_bl_other_power_product_start. pa_h_bl_other_power_product_start + S (1) = S ((S (0)) * pa_v_bl_other_power_product)) /\ exists pa_q_bl_other_power_product_start. pa_u_bl_other_power_product = pa_q_bl_other_power_product_start * S ((S (0)) * pa_v_bl_other_power_product) + (1))) /\ ((((exists pa_h_bl_other_power_product_terminal. pa_h_bl_other_power_product_terminal + S (q) = S ((S (e)) * pa_v_bl_other_power_product)) /\ exists pa_q_bl_other_power_product_terminal. pa_u_bl_other_power_product = pa_q_bl_other_power_product_terminal * S ((S (e)) * pa_v_bl_other_power_product) + (q))) /\ forall pa_i_bl_other_power_product. (exists pa_lt_bl_other_power_product_bound. pa_lt_bl_other_power_product_bound + S pa_i_bl_other_power_product = e) -> exists pa_p_bl_other_power_product pa_r_bl_other_power_product pa_s_bl_other_power_product. ((((exists pa_h_bl_other_power_product_factor. pa_h_bl_other_power_product_factor + S (pa_p_bl_other_power_product) = S ((S (pa_i_bl_other_power_product)) * pa_c_bl_other_power)) /\ exists pa_q_bl_other_power_product_factor. pa_b_bl_other_power = pa_q_bl_other_power_product_factor * S ((S (pa_i_bl_other_power_product)) * pa_c_bl_other_power) + (pa_p_bl_other_power_product))) /\ ((((exists pa_h_bl_other_power_product_partial. pa_h_bl_other_power_product_partial + S (pa_r_bl_other_power_product) = S ((S (pa_i_bl_other_power_product)) * pa_v_bl_other_power_product)) /\ exists pa_q_bl_other_power_product_partial. pa_u_bl_other_power_product = pa_q_bl_other_power_product_partial * S ((S (pa_i_bl_other_power_product)) * pa_v_bl_other_power_product) + (pa_r_bl_other_power_product))) /\ ((((exists pa_h_bl_other_power_product_successor. pa_h_bl_other_power_product_successor + S (pa_s_bl_other_power_product) = S ((S (S pa_i_bl_other_power_product)) * pa_v_bl_other_power_product)) /\ exists pa_q_bl_other_power_product_successor. pa_u_bl_other_power_product = pa_q_bl_other_power_product_successor * S ((S (S pa_i_bl_other_power_product)) * pa_v_bl_other_power_product) + (pa_s_bl_other_power_product))) /\ pa_s_bl_other_power_product = pa_r_bl_other_power_product * pa_p_bl_other_power_product)))))))) -> p = q

Constructive proof overview

Generated structural guide

The relational power of two is functional at every exponent.

The unchanged tactic script uses 1 declared prerequisite and contains 12 exact native proof lines.

Alpha v34 checked-use · first admitted v22 · independently kernel and Lean verified; not Stable

Proof neighborhood

Direct dependencies

pow_functional Stable theorem; checked-use authorized

Direct dependents

none

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

12 script commands · 2 reading checkpoints · 0 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.

01Fix variables and assumptionsL1–5

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

  1. L1
    intro e
  2. L2
    intro p
  3. L3
    intro q
  4. L4
    intro hp
  5. L5
    intro hq
02Use earlier factsL6–12

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

  1. L6
    specialize pow_functional 2
  2. L7
    specialize pow_functional e
  3. L8
    specialize pow_functional p
  4. L9
    specialize pow_functional q
  5. L10
    apply pow_functional
  6. L11
    exact hp
  7. L12
    exact hq

Library-wide reading audit

Original exact command ledger · 12 lines
  1. 0001intro e
  2. 0002intro p
  3. 0003intro q
  4. 0004intro hp
  5. 0005intro hq
  6. 0006specialize pow_functional 2
  7. 0007specialize pow_functional e
  8. 0008specialize pow_functional p
  9. 0009specialize pow_functional q
  10. 0010apply pow_functional
  11. 0011exact hp
  12. 0012exact hq