Theorem trggrp 24181

Description: A topological ring is a group. (Contributed by Mario Carneiro, 5-Oct-2015.)

Assertion

Ref	Expression
trggrp	⊢ (𝑅 ∈ TopRing → 𝑅 ∈ Grp)

Proof of Theorem trggrp

Step	Hyp	Ref	Expression
1		trgring 24180	. 2 ⊢ (𝑅 ∈ TopRing → 𝑅 ∈ Ring)
2		ringgrp 20236	. 2 ⊢ (𝑅 ∈ Ring → 𝑅 ∈ Grp)
3	1, 2	syl 17	1 ⊢ (𝑅 ∈ TopRing → 𝑅 ∈ Grp)

Syntax hints:   → wi 4   ∈ wcel 2107  Grpcgrp 18952  Ringcrg 20231  TopRingctrg 24165

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1794  ax-4 1808  ax-5 1909  ax-6 1966  ax-7 2006  ax-8 2109  ax-9 2117  ax-ext 2707  ax-nul 5305

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1779  df-sb 2064  df-clab 2714  df-cleq 2728  df-clel 2815  df-ne 2940  df-ral 3061  df-rab 3436  df-v 3481  df-sbc 3788  df-dif 3953  df-un 3955  df-in 3957  df-ss 3967  df-nul 4333  df-if 4525  df-sn 4626  df-pr 4628  df-op 4632  df-uni 4907  df-br 5143  df-iota 6513  df-fv 6568  df-ov 7435  df-ring 20233  df-trg 24169

This theorem is referenced by: (None)