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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 1650 | . 2 | |
2 | id 19 | . 2 | |
3 | 1, 2 | mpg 1340 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wsb 1645 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-5 1336 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-4 1400 ax-i9 1423 ax-ial 1427 |
This theorem depends on definitions: df-bi 110 df-sb 1646 |
This theorem is referenced by: sbcocom 1844 elsb3 1852 elsb4 1853 pm13.183 2681 exss 3963 relelfvdm 5205 |
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