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Theorem extension-dh

⊦ cu = cu0 ↔ #x cu = #x cu0 ∧ #y cu = #y cu0 ∧ #z cu = #z cu0 ∧ (∀ ny, nz. ny < #y cu ∧ nz < #z cu → cu[ny, nz]yz = cu0[ny, nz]yz)

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: 3
Proof steps: 8
Used lemmas: sel-dh-get, sel-dh-size,
Used spec theorems:
- cube/extension
- array/Extension
Used simplifier rules:
- nat-basic/f
- nat-basic/lf-01