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Theorem pfunp-def
⊦ pfunp(rel) ↔ (∀ b1, b2, a. rel(a, b1) ∧ rel(a, b2) → b1 = b2)
Type: An axiom
Validity: The proof is valid.
Features:
Comment:
Used by:
Used by units in proved state:
Proof exists?: No