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Mirrors > Home > ILE Home > Th. List > fveq2 | Unicode version |
Description: Equality theorem for function value. (Contributed by NM, 29-Dec-1996.) |
Ref | Expression |
---|---|
fveq2 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | breq1 3878 |
. . 3
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2 | 1 | iotabidv 5045 |
. 2
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3 | df-fv 5067 |
. 2
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4 | df-fv 5067 |
. 2
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5 | 2, 3, 4 | 3eqtr4g 2157 |
1
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