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Theorem subset-ins

⊦ s ++ a ⊆ s0 ++ a ++ b ↔ s ⊆ s0 ++ a ++ b

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: 0
Proof steps: 1
Used lemmas: rax, sub-add-03, sub-add-02,
Used spec theorems:
- Used simplifier rules: