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Theorem eq-write-1

⊦ mx[r, c := a] = mx[r, c := b] ↔ r < #r mx ∧ c < #c mx → a = b

Type: A user defined theorem
Validity: The proof is valid.
Features: s, ls,
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: 7
Used lemmas: cngetput-r, put-same, cngetput-c, colno-put, rowno-put, extension,
Used spec theorems:
- Used simplifier rules: