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Theorem mk-butlast

⊦ m ≠ 0 → (x + mklist(a, m)).butlast = x + mklist(a, m - 1)

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by: blastN-mklist,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 2
Proof steps: 6
Used lemmas: b, mk-zero, bin, mk-last, mklist-one, mk-plus,
Used spec theorems:
- Used simplifier rules:
  - nat/elim-pred-c
  - nat-basic2/oz
  - list/app
  - list/app-01
  - nat-basic2/c
  - nat-basic2/a
  - list/a
  - nat-basic2/succ