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Theorem tgptmd 23138
Description: A topological group is a topological monoid. (Contributed by Mario Carneiro, 19-Sep-2015.)
Assertion
Ref Expression
tgptmd (𝐺 ∈ TopGrp → 𝐺 ∈ TopMnd)

Proof of Theorem tgptmd
StepHypRef Expression
1 eqid 2738 . . 3 (TopOpen‘𝐺) = (TopOpen‘𝐺)
2 eqid 2738 . . 3 (invg𝐺) = (invg𝐺)
31, 2istgp 23136 . 2 (𝐺 ∈ TopGrp ↔ (𝐺 ∈ Grp ∧ 𝐺 ∈ TopMnd ∧ (invg𝐺) ∈ ((TopOpen‘𝐺) Cn (TopOpen‘𝐺))))
43simp2bi 1144 1 (𝐺 ∈ TopGrp → 𝐺 ∈ TopMnd)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2108  cfv 6418  (class class class)co 7255  TopOpenctopn 17049  Grpcgrp 18492  invgcminusg 18493   Cn ccn 22283  TopMndctmd 23129  TopGrpctgp 23130
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2156  ax-12 2173  ax-ext 2709  ax-nul 5225
This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-nf 1788  df-sb 2069  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2817  df-ral 3068  df-rex 3069  df-rab 3072  df-v 3424  df-sbc 3712  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-nul 4254  df-if 4457  df-sn 4559  df-pr 4561  df-op 4565  df-uni 4837  df-br 5071  df-iota 6376  df-fv 6426  df-ov 7258  df-tgp 23132
This theorem is referenced by:  tgptps  23139  tgpcn  23143  tgpsubcn  23149  tgpmulg  23152  oppgtgp  23157  tgplacthmeo  23162  subgtgp  23164  clsnsg  23169  tgpt0  23178  prdstgpd  23184  tsmssub  23208  tsmsxp  23214  trgtmd2  23228  nlmtlm  23764  qqhcn  31841
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