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Syntax Definition
tb
5
Description:
If
a
and
b
are terms, so is (
a
≡
b
).
Hypotheses
Ref
Expression
wva
term
a
wvb
term
b
Assertion
Ref
Expression
tb
term
(
a
≡
b
)
See definition
df-b
39
for more information.
Colors of variables:
term
Copyright terms:
Public domain