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Theorem from-cons-one

⊦ (⌜a '⌝ + σ).drop(1) = σ

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 6
Proof steps: 8
Used lemmas: from-nf, from-inf, one-inf, from-cons-one-fin, from-fin, append-finfin,
Used spec theorems:
- Used simplifier rules: