Metamath Proof Explorer
Description: The multiplicative monoid of a topological ring is a topological monoid.
(Contributed by Mario Carneiro, 5-Oct-2015)
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|
Ref |
Expression |
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Hypothesis |
istrg.1 |
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Assertion |
trgtmd |
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Proof
Step |
Hyp |
Ref |
Expression |
1 |
|
istrg.1 |
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2 |
1
|
istrg |
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3 |
2
|
simp3bi |
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