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Theorem ext-rec

⊦ ar1 = ar0(n := a) ↔ (∀ m. m < size → ar1(m) = (n = m ⊃ a;ar0(m)))

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 14
Used lemmas: Put-other, Put-same, Extension,
Used spec theorems:
- Used simplifier rules:
  - nat-basic/f