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Mirrors > Home > MPE Home > Th. List > mulne0d | Structured version Visualization version Unicode version |
Description: The product of two nonzero numbers is nonzero. (Contributed by Mario Carneiro, 27-May-2016.) |
Ref | Expression |
---|---|
msq0d.1 |
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mul0ord.2 |
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mulne0d.3 |
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mulne0d.4 |
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Ref | Expression |
---|---|
mulne0d |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mulne0d.3 |
. 2
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2 | mulne0d.4 |
. 2
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3 | msq0d.1 |
. . 3
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4 | mul0ord.2 |
. . 3
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5 | 3, 4 | mulne0bd 10678 |
. 2
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6 | 1, 2, 5 | mpbi2and 956 |
1
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