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Theorem subset-trans

⊦ H0 ⊆ H1 ∧ H1 ⊆ H2 → H0 ⊆ H2

Type: A user defined theorem
Validity: The proof is valid.
Features: forward, localforward,
Comment:
Used by: copy-edges-nonempty-term, copy-map, copy-monotone,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 6
Proof steps: 10
Used lemmas:
Used spec theorems:
- heap/node-heap/subset
Used simplifier rules: