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Theorem countrefs2-zero

⊦ countrefs2(0 ' + ints) = 0

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 1
Used lemmas: countrefs2-one-01, countrefs_more_le0,
Used spec theorems:
- Used simplifier rules:
  - list/intlista/len
  - list/intlista/len-02
  - list/intlista/a
  - nat/ax-02
  - nat-basic1/one
  - nat-basic2/oz
  - nat-basic2/a
  - nat-basic2/c
  - nat-basic2/one-03
  - list-data/intlista/l
  - list/intlista/c-08
  - list/intlista/app