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Mirrors > Home > MPE Home > Th. List > rpmulcld | Structured version Visualization version Unicode version |
Description: Closure law for multiplication of positive reals. Part of Axiom 7 of [Apostol] p. 20. (Contributed by Mario Carneiro, 28-May-2016.) |
Ref | Expression |
---|---|
rpred.1 | |
rpaddcld.1 |
Ref | Expression |
---|---|
rpmulcld |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rpred.1 | . 2 | |
2 | rpaddcld.1 | . 2 | |
3 | rpmulcl 11855 | . 2 | |
4 | 1, 2, 3 | syl2anc 693 | 1 |
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