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Theorem tgptmd 23966
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 2729 . . 3 (TopOpen‘𝐺) = (TopOpen‘𝐺)
2 eqid 2729 . . 3 (invg𝐺) = (invg𝐺)
31, 2istgp 23964 . 2 (𝐺 ∈ TopGrp ↔ (𝐺 ∈ Grp ∧ 𝐺 ∈ TopMnd ∧ (invg𝐺) ∈ ((TopOpen‘𝐺) Cn (TopOpen‘𝐺))))
43simp2bi 1146 1 (𝐺 ∈ TopGrp → 𝐺 ∈ TopMnd)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2109  cfv 6511  (class class class)co 7387  TopOpenctopn 17384  Grpcgrp 18865  invgcminusg 18866   Cn ccn 23111  TopMndctmd 23957  TopGrpctgp 23958
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-ext 2701  ax-nul 5261
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-sb 2066  df-clab 2708  df-cleq 2721  df-clel 2803  df-ne 2926  df-rab 3406  df-v 3449  df-sbc 3754  df-dif 3917  df-un 3919  df-in 3921  df-ss 3931  df-nul 4297  df-if 4489  df-sn 4590  df-pr 4592  df-op 4596  df-uni 4872  df-br 5108  df-iota 6464  df-fv 6519  df-ov 7390  df-tgp 23960
This theorem is referenced by:  tgptps  23967  tgpcn  23971  tgpsubcn  23977  tgpmulg  23980  oppgtgp  23985  tgplacthmeo  23990  subgtgp  23992  clsnsg  23997  tgpt0  24006  prdstgpd  24012  tsmssub  24036  tsmsxp  24042  trgtmd2  24056  nlmtlm  24582  qqhcn  33981
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