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Theorem Del-at-strong

a ≠ b ⊦ (st -- b)[a] = st[a]

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by: insert, rem-eq, subset-delete, subset-delete-01, subset-put, subset-put-01, subset-put-02, sw, sw-01,
Used by units in proved state: store+set,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 1
Used lemmas: Del-at,
Used spec theorems:
- Used simplifier rules: