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Theorem union-okarray

⊦ okarray(r, ty, st) → okarray(r, ty, st0 ∪ st)

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 9
Proof steps: 26
Used lemmas: oktype-okval, okreftype, okarrayNotNull, okarray-05,
Used spec theorems:
- storefunsx/union-at-right-01
- storearrays/is_arrayref
Used simplifier rules: