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Theorem is_obj-union

⊦ is_obj(str, r, st) → is_obj(str, r, st0 ∪ st)

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 2
Proof steps: 4
Used lemmas: isobj-type-05, isobj-union-01, is-real-object-def,
Used spec theorems:
- storefunsx/union-at-right-01
Used simplifier rules:
- store/javastore/notmemlookup
- storefunsx/lookup-xtra