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Mirrors > Home > ILE Home > Th. List > sbceq2a | Unicode version |
Description: Equality theorem for class substitution. Class version of sbequ12r 1745. (Contributed by NM, 4-Jan-2017.) |
Ref | Expression |
---|---|
sbceq2a |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sbceq1a 2918 | . . 3 | |
2 | 1 | eqcoms 2142 | . 2 |
3 | 2 | bicomd 140 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wb 104 wceq 1331 wsbc 2909 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-5 1423 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-4 1487 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-ext 2121 |
This theorem depends on definitions: df-bi 116 df-sb 1736 df-clab 2126 df-cleq 2132 df-clel 2135 df-sbc 2910 |
This theorem is referenced by: (None) |
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