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Mirrors > Home > ILE Home > Th. List > equsb1 | Unicode version |
Description: Substitution applied to an atomic wff. (Contributed by NM, 5-Aug-1993.) |
Ref | Expression |
---|---|
equsb1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sb2 1760 | . 2 | |
2 | id 19 | . 2 | |
3 | 1, 2 | mpg 1444 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wsb 1755 |
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 1440 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-4 1503 ax-i9 1523 ax-ial 1527 |
This theorem depends on definitions: df-bi 116 df-sb 1756 |
This theorem is referenced by: sbcocom 1963 elsb1 2148 elsb2 2149 pm13.183 2868 exss 4210 relelfvdm 5526 |
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