Metamath Proof Explorer


Theorem axfrege54c

Description: Reflexive equality of classes. Identical to eqid . Justification for ax-frege54c . (Contributed by RP, 24-Dec-2019)

Ref Expression
Assertion axfrege54c 𝐴 = 𝐴

Proof

Step Hyp Ref Expression
1 eqid 𝐴 = 𝐴