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Mirrors > Home > ILE Home > Th. List > eqeltrd | Unicode version |
Description: Substitution of equal classes into membership relation, deduction form. (Contributed by Raph Levien, 10-Dec-2002.) |
Ref | Expression |
---|---|
eqeltrd.1 |
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eqeltrd.2 |
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Ref | Expression |
---|---|
eqeltrd |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqeltrd.2 |
. 2
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2 | eqeltrd.1 |
. . 3
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3 | 2 | eleq1d 2246 |
. 2
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4 | 1, 3 | mpbird 167 |
1
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