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Theorem del-uni

⊦ H0 ⊥ H1 → (H0 ∪ H1) -- r = (H0 -- r) ∪ (H1 -- r)

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 10
Proof steps: 21
Used lemmas: disj-r, disj-l, disj, at-uni, at-del, in-uni, in-del, ext,
Used spec theorems:
- Used simplifier rules: