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Theorem ext-rec

⊦ ar1 = ar0[n, a] ↔ # ar0 = # ar1 ∧ (∀ m. m < # ar0 → 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: 4
Proof steps: 11
Used lemmas: cgetput, Extension, Put-same, Put-other, Size-put,
Used spec theorems:
- Used simplifier rules: