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Mirrors > Home > MPE Home > Th. List > 2nexaln | Structured version Visualization version Unicode version |
Description: Theorem *11.25 in [WhiteheadRussell] p. 160. (Contributed by Andrew Salmon, 24-May-2011.) |
Ref | Expression |
---|---|
2nexaln |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 2exnaln 1756 | . . 3 | |
2 | 1 | bicomi 214 | . 2 |
3 | 2 | con1bii 346 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wb 196 wal 1481 wex 1704 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 |
This theorem depends on definitions: df-bi 197 df-ex 1705 |
This theorem is referenced by: 2mo 2551 bj-alcomexcom 32670 pm11.63 38595 fun2dmnopgexmpl 41303 spr0nelg 41726 |
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