DL0003

matrix_recursive_prefix_trans

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

Actual beta-prefix preservation composes without changing any encoded entry.

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 u v w z l. (forall mdr_i_source mdr_a_source. (exists mdr_gap_sourceb. mdr_gap_sourceb + S (mdr_i_source) = (l)) -> (((exists ff_h_mdr_sourceo. ff_h_mdr_sourceo + S (mdr_a_source) = S ((S (mdr_i_source)) * c)) /\ exists ff_q_mdr_sourceo. b = ff_q_mdr_sourceo * S ((S (mdr_i_source)) * c) + (mdr_a_source))) -> (((exists ff_h_mdr_sourcen. ff_h_mdr_sourcen + S (mdr_a_source) = S ((S (mdr_i_source)) * v)) /\ exists ff_q_mdr_sourcen. u = ff_q_mdr_sourcen * S ((S (mdr_i_source)) * v) + (mdr_a_source)))) -> (forall mdr_i_middle mdr_a_middle. (exists mdr_gap_middleb. mdr_gap_middleb + S (mdr_i_middle) = (l)) -> (((exists ff_h_mdr_middleo. ff_h_mdr_middleo + S (mdr_a_middle) = S ((S (mdr_i_middle)) * v)) /\ exists ff_q_mdr_middleo. u = ff_q_mdr_middleo * S ((S (mdr_i_middle)) * v) + (mdr_a_middle))) -> (((exists ff_h_mdr_middlen. ff_h_mdr_middlen + S (mdr_a_middle) = S ((S (mdr_i_middle)) * z)) /\ exists ff_q_mdr_middlen. w = ff_q_mdr_middlen * S ((S (mdr_i_middle)) * z) + (mdr_a_middle)))) -> (forall mdr_i_result mdr_a_result. (exists mdr_gap_resultb. mdr_gap_resultb + S (mdr_i_result) = (l)) -> (((exists ff_h_mdr_resulto. ff_h_mdr_resulto + S (mdr_a_result) = S ((S (mdr_i_result)) * c)) /\ exists ff_q_mdr_resulto. b = ff_q_mdr_resulto * S ((S (mdr_i_result)) * c) + (mdr_a_result))) -> (((exists ff_h_mdr_resultn. ff_h_mdr_resultn + S (mdr_a_result) = S ((S (mdr_i_result)) * z)) /\ exists ff_q_mdr_resultn. w = ff_q_mdr_resultn * S ((S (mdr_i_result)) * z) + (mdr_a_result))))

Constructive proof overview

Generated structural guide

Actual beta-prefix preservation composes without changing any encoded entry.

The unchanged tactic script uses 0 declared prerequisites and contains 22 exact native proof lines.

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

Proof neighborhood

Direct dependencies

none

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

22 script commands · 3 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 assumptionsL1–10

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

  1. L1
    intro b
  2. L2
    intro c
  3. L3
    intro u
  4. L4
    intro v
  5. L5
    intro w
  6. L6
    intro z
  7. L7
    intro l
  8. L8
    intro hfirst
  9. L9
    intro hsecond
  10. L10
    intro i
02Fix variables and assumptionsL11–13

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

  1. L11
    intro a
  2. L12
    intro hi
  3. L13
    intro ha
03Use earlier factsL14–22

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

  1. L14
    specialize hsecond (i)
  2. L15
    specialize hsecond (a)
  3. L16
    apply hsecond
  4. L17
    exact hi
  5. L18
    specialize hfirst (i)
  6. L19
    specialize hfirst (a)
  7. L20
    apply hfirst
  8. L21
    exact hi
  9. L22
    exact ha

Library-wide reading audit

Original exact command ledger · 22 lines
  1. 0001intro b
  2. 0002intro c
  3. 0003intro u
  4. 0004intro v
  5. 0005intro w
  6. 0006intro z
  7. 0007intro l
  8. 0008intro hfirst
  9. 0009intro hsecond
  10. 0010intro i
  11. 0011intro a
  12. 0012intro hi
  13. 0013intro ha
  14. 0014specialize hsecond (i)
  15. 0015specialize hsecond (a)
  16. 0016apply hsecond
  17. 0017exact hi
  18. 0018specialize hfirst (i)
  19. 0019specialize hfirst (a)
  20. 0020apply hfirst
  21. 0021exact hi
  22. 0022exact ha