Metamath Proof Explorer


Theorem elmaprd

Description: Deduction associated with elmapd . Reverse direction of elmapdd . (Contributed by Thierry Arnoux, 13-Oct-2025) Removed redundant hypotheses. (Revised by SN, 30-Aug-2026)

Ref Expression
Hypothesis elmaprd.1 φ F B A
Assertion elmaprd φ F : A B

Proof

Step Hyp Ref Expression
1 elmaprd.1 φ F B A
2 elmapi F B A F : A B
3 1 2 syl φ F : A B