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Theorem subset-uni

⊦ h0 ⊆ h1 ↔ (∃ h. h0 ∪ h = h1 ∧ h ⊥ h0)

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 9
Proof steps: 17
Used lemmas: disj-r, subset, disj, subset-at, diff-at, at-uni, diff-in, in-uni, subset-in, ext, uni-com,
Used spec theorems:
- Used simplifier rules: