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Mirrors > Home > MPE Home > Th. List > eleqtrri | Structured version Visualization version Unicode version |
Description: Substitution of equal classes into membership relation. (Contributed by NM, 15-Jul-1993.) |
Ref | Expression |
---|---|
eleqtrr.1 |
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eleqtrr.2 |
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Ref | Expression |
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eleqtrri |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eleqtrr.1 |
. 2
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2 | eleqtrr.2 |
. . 3
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3 | 2 | eqcomi 2460 |
. 2
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4 | 1, 3 | eleqtri 2527 |
1
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