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Theorem mkbag-del-add-content-two

m < i, n < i, n ≠ m, i ≤ # A ⊦ (mkbag(A, i) -- A[m] -- A[n]) ++ A[m] ++ A[n] = mkbag(A, i)

Type: A user defined theorem
Validity: The proof is valid.
Features: ls, ss,
Comment:
Used by: perm-shift-two,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 3
Used lemmas: mkbag-del-add-content, bag-del-add, in-mkbag-del, bag-swap-del,
Used spec theorems:
- Used simplifier rules:
  - nat/fle
  - nat-basic/f