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Mirrors > Home > MPE Home > Th. List > necon4bid | Structured version Visualization version Unicode version |
Description: Contrapositive law deduction for inequality. (Contributed by NM, 29-Jun-2007.) |
Ref | Expression |
---|---|
necon4bid.1 |
Ref | Expression |
---|---|
necon4bid |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | necon4bid.1 | . . 3 | |
2 | 1 | necon2bbid 2837 | . 2 |
3 | nne 2798 | . 2 | |
4 | 2, 3 | syl6rbb 277 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wi 4 wb 196 wceq 1483 wne 2794 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
This theorem depends on definitions: df-bi 197 df-ne 2795 |
This theorem is referenced by: nebi 2874 znnenlem 14940 rpexp 15432 norm-i 27986 trlid0b 35465 |
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