Metamath Proof Explorer


Theorem wrdeqi

Description: Equality theorem for the set of words, inference form. (Contributed by AV, 23-May-2021)

Ref Expression
Hypothesis wrdeqi.1 S = T
Assertion wrdeqi Word S = Word T

Proof

Step Hyp Ref Expression
1 wrdeqi.1 S = T
2 wrdeq S = T Word S = Word T
3 1 2 ax-mp Word S = Word T