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Theorem pos-str-03

str ≠ "", char = str.char1 ⊦ pos((* char), (* str)) = 0

Type: A user defined theorem
Validity: The proof is valid.
Features: localsimp,
Comment:
Used by: insorted, pos-0, pos-1, pos-2, pos-a, pos-b, pos-c, pos-capital-a, pos-capital-b, pos-capital-c, pos-capital-z, pos-z,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 3
Used lemmas:
Used spec theorems:
- Used simplifier rules:
  - list/string-new/c
  - list-del/string-new/pos-y
  - list/string-new/a
  - list-data/string-new/elim-list