This is an inofficial mirror of http://metamath.tirix.org for personal testing of a visualizer extension only.
Metamath Proof Explorer
Description: The covers relation implies inequality. (Contributed by NM, 13-Oct-2011)
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Ref |
Expression |
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Hypotheses |
cvrne.b |
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cvrne.c |
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Assertion |
cvrne |
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Proof
| Step |
Hyp |
Ref |
Expression |
| 1 |
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cvrne.b |
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| 2 |
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cvrne.c |
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| 3 |
|
eqid |
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| 4 |
1 3 2
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cvrlt |
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| 5 |
|
eqid |
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| 6 |
5 3
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pltval |
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| 7 |
6
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simplbda |
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| 8 |
4 7
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syldan |
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