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Mirrors > Home > ILE Home > Th. List > necon3bbii | Unicode version |
Description: Deduction from equality to inequality. (Contributed by NM, 13-Apr-2007.) |
Ref | Expression |
---|---|
necon3bbii.1 |
Ref | Expression |
---|---|
necon3bbii |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | necon3bbii.1 | . . . 4 | |
2 | 1 | bicomi 131 | . . 3 |
3 | 2 | necon3abii 2363 | . 2 |
4 | 3 | bicomi 131 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wb 104 wceq 1335 wne 2327 |
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-in1 604 ax-in2 605 |
This theorem depends on definitions: df-bi 116 df-ne 2328 |
This theorem is referenced by: ef0lem 11557 |
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