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Theorem rev-at

⊦ n < # ar → rev(ar)[n] = ar[# ar - n + 1]

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 2
Proof steps: 7
Used lemmas: rev-at-h, rev,
Used spec theorems:
- Used simplifier rules: