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Mirrors > Home > MPE Home > Th. List > addcld | Structured version Visualization version Unicode version |
Description: Closure law for addition. (Contributed by Mario Carneiro, 27-May-2016.) |
Ref | Expression |
---|---|
addcld.1 |
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addcld.2 |
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Ref | Expression |
---|---|
addcld |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | addcld.1 |
. 2
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2 | addcld.2 |
. 2
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3 | addcl 9621 |
. 2
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4 | 1, 2, 3 | syl2anc 667 |
1
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