DL0038

matrix_rank_bounded_prefix_empty

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

Every beta code describes the empty bounded selector prefix.

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 B. (forall fom_index_mrf_empty_bounded. (exists fom_gap_mrf_empty_bounded_index_bound. fom_gap_mrf_empty_bounded_index_bound + S (fom_index_mrf_empty_bounded) = 0) -> exists fom_value_mrf_empty_bounded. ((((exists fom_beta_height_mrf_empty_bounded_entry. fom_beta_height_mrf_empty_bounded_entry + S (fom_value_mrf_empty_bounded) = S ((S (fom_index_mrf_empty_bounded)) * c)) /\ exists fom_beta_quotient_mrf_empty_bounded_entry. b = fom_beta_quotient_mrf_empty_bounded_entry * S ((S (fom_index_mrf_empty_bounded)) * c) + (fom_value_mrf_empty_bounded))) /\ (exists fom_gap_mrf_empty_bounded_value_bound. fom_gap_mrf_empty_bounded_value_bound + S (fom_value_mrf_empty_bounded) = B)))

Constructive proof overview

Generated structural guide

Every beta code describes the empty bounded selector prefix.

The unchanged tactic script uses 1 declared prerequisite and contains 9 exact native proof lines.

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

Proof neighborhood

Direct dependencies

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

9 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.

Named ingredients (1)
01Fix variables and assumptionsL1–5

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

  1. L1
    intro b
  2. L2
    intro c
  3. L3
    intro B
  4. L4
    intro i
  5. L5
    intro hi
02Separate the logical casesL6–6

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

  1. L6
    exfalso
03Use earlier factsL7–9

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

  1. L7
    specialize matrix_rank_no_index_below_zero (i)
  2. L8
    apply matrix_rank_no_index_below_zero
  3. L9
    exact hi

Library-wide reading audit

Original exact command ledger · 9 lines
  1. 0001intro b
  2. 0002intro c
  3. 0003intro B
  4. 0004intro i
  5. 0005intro hi
  6. 0006exfalso
  7. 0007specialize matrix_rank_no_index_below_zero (i)
  8. 0008apply matrix_rank_no_index_below_zero
  9. 0009exact hi