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Theorem uni-com

⊦ h0 ⊥ h1 → h1 ∪ h0 = h0 ∪ h1

Type: A user defined theorem
Validity: The proof is valid.
Features:
Comment:
Used by: subset-uni, uni-emp-l, write-left,
Used by units in proved state: separation, calculus,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 4
Proof steps: 9
Used lemmas: disj-r, disj-l, at-uni, disj-com-rw, in-uni, ext,
Used spec theorems:
- Used simplifier rules: