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Mirrors > Home > MPE Home > Th. List > eleq2s | Structured version Visualization version Unicode version |
Description: Substitution of equal classes into a membership antecedent. (Contributed by Jonathan Ben-Naim, 3-Jun-2011.) |
Ref | Expression |
---|---|
eleq2s.1 |
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eleq2s.2 |
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Ref | Expression |
---|---|
eleq2s |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eleq2s.2 |
. . 3
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2 | 1 | eleq2i 2532 |
. 2
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3 | eleq2s.1 |
. 2
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4 | 2, 3 | sylbi 200 |
1
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