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Theorem elem-does-occur

⊦ m < # A → #oc(A[m], A, # A) ≠ 0

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 4
Used lemmas: elem-below-occurs,
Used spec theorems:
- Used simplifier rules:
  - nat-basic1/f
  - nat/ler