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Mirrors > Home > MPE Home > Th. List > znegcld | Structured version Visualization version Unicode version |
Description: Closure law for negative integers. (Contributed by Mario Carneiro, 28-May-2016.) |
Ref | Expression |
---|---|
zred.1 |
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Ref | Expression |
---|---|
znegcld |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | zred.1 |
. 2
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2 | znegcl 11412 |
. 2
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3 | 1, 2 | syl 17 |
1
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