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Mirrors > Home > MPE Home > Th. List > con2 | Structured version Visualization version Unicode version |
Description: Contraposition. Theorem *2.03 of [WhiteheadRussell] p. 100. (Contributed by NM, 29-Dec-1992.) (Proof shortened by Wolf Lammen, 12-Feb-2013.) |
Ref | Expression |
---|---|
con2 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | id 22 | . 2 | |
2 | 1 | con2d 129 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wi 4 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
This theorem is referenced by: con2b 349 isprm5 15419 bj-con2com 32548 bj-axtd 32578 |
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