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Theorem postfix
⊦ x ⊒ y ↔ (∃ z. z + x = y)
Type: An axiom
Validity: The proof is valid.
Features:
Comment:
Used by:
postfix-app
,
postfix-app-01
,
postfix-app-02
,
postfix-app-06
,
postfix-empty
,
postfix-empty-03
,
postfix-in
,
postfix-in-03
,
postfix-length
,
postfix-more
,
postfix-more-01
,
postfix-one
,
postfix-rec-right
,
postfix-reflexivity
,
postfix-trans
,
Used by units in proved state:
Proof exists?: No