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Theorem subarray-up-same

⊦ n < # ar → subarray(ar[n := a], 0, n) = subarray(ar, 0, n)

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 2
Proof steps: 5
Used lemmas: copy-exact, at-copy, size-copy, Subarray,
Used spec theorems:
- array/Extension
Used simplifier rules: