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Theorem prefix-notsmallersize

⊦ σ ⊑ σ0 → (# σ0 < # σ ↔ false)

Type: A user defined theorem
Validity: The proof is valid.
Features: s, ls,
Comment:
Used by:
Used by units in proved state: mon-lim-filter-count-old,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 3
Used lemmas: append-assoc, size-append, prefix-def,
Used spec theorems:
- Used simplifier rules: