Database
REAL AND COMPLEX NUMBERS
Words over a set
Definitions and basic theorems
wrdeqi
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iswrddm0
Metamath Proof Explorer
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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