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Mirrors > Home > MPE Home > Th. List > csbeq1 | Structured version Visualization version Unicode version |
Description: Analogue of dfsbcq 3281 for proper substitution into a class. (Contributed by NM, 10-Nov-2005.) |
Ref | Expression |
---|---|
csbeq1 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dfsbcq 3281 |
. . 3
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2 | 1 | abbidv 2580 |
. 2
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3 | df-csb 3376 |
. 2
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4 | df-csb 3376 |
. 2
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5 | 2, 3, 4 | 3eqtr4g 2521 |
1
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