Theorem subrngsubg 20834

Description: A subring is a subgroup. (Contributed by AV, 14-Feb-2025.)

Assertion

Ref	Expression
subrngsubg	⊢ (𝐴 ∈ (SubRng‘𝑅) → 𝐴 ∈ (SubGrp‘𝑅))

Proof of Theorem subrngsubg

Step	Hyp	Ref	Expression
1		subrngrcl 20833	. . 3 ⊢ (𝐴 ∈ (SubRng‘𝑅) → 𝑅 ∈ Rng)
2		rnggrp 20410	. . 3 ⊢ (𝑅 ∈ Rng → 𝑅 ∈ Grp)
3	1, 2	syl 18	. 2 ⊢ (𝐴 ∈ (SubRng‘𝑅) → 𝑅 ∈ Grp)
4		eqid 2763	. . 3 ⊢ (Base‘𝑅) = (Base‘𝑅)
5	4	subrngss 20830	. 2 ⊢ (𝐴 ∈ (SubRng‘𝑅) → 𝐴 ⊆ (Base‘𝑅))
6		eqid 2763	. . . 4 ⊢ (𝑅 ↾s 𝐴) = (𝑅 ↾s 𝐴)
7	6	subrngrng 20832	. . 3 ⊢ (𝐴 ∈ (SubRng‘𝑅) → (𝑅 ↾s 𝐴) ∈ Rng)
8		rnggrp 20410	. . 3 ⊢ ((𝑅 ↾s 𝐴) ∈ Rng → (𝑅 ↾s 𝐴) ∈ Grp)
9	7, 8	syl 18	. 2 ⊢ (𝐴 ∈ (SubRng‘𝑅) → (𝑅 ↾s 𝐴) ∈ Grp)
10	4	issubg 19365	. 2 ⊢ (𝐴 ∈ (SubGrp‘𝑅) ↔ (𝑅 ∈ Grp ∧ 𝐴 ⊆ (Base‘𝑅) ∧ (𝑅 ↾s 𝐴) ∈ Grp))
11	3, 5, 9, 10	syl3anbrc 1362	1 ⊢ (𝐴 ∈ (SubRng‘𝑅) → 𝐴 ∈ (SubGrp‘𝑅))

This proof depends on syntax axioms:   → wi 4   ∈ wcel 2147   ⊆ wss 3900  ‘cfv 6558  (class class class)co 7443  Basecbs 17416   ↾_s cress 17437  Grpcgrp 19173  SubGrpcsubg 19359  Rngcrng 20404  SubRngcsubrng 20827

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-10 2180  ax-11 2197  ax-12 2216  ax-ext 2735  ax-sep 5252  ax-nul 5263  ax-pow 5331  ax-pr 5395

This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2102  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2839  df-nfc 2913  df-ne 2960  df-ral 3081  df-rex 3091  df-rab 3417  df-v 3456  df-sbc 3743  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-op 4839  df-uni 4871  df-br 5107  df-opab 5171  df-mpt 5190  df-id 5550  df-xp 5661  df-rel 5662  df-cnv 5663  df-co 5664  df-dm 5665  df-rn 5666  df-res 5667  df-ima 5668  df-iota 6512  df-fun 6560  df-fv 6566  df-ov 7446  df-subg 19362  df-abl 20027  df-rng 20405  df-subrng 20828

This theorem is used by:  subrngringnsg  20835  subrngbas  20836  subrng0  20837  subrngacl  20838  issubrng2  20840  subrngint  20842  rhmimasubrng  20848  rng2idl0  21591  rng2idlsubg0  21594  rngqiprnglinlem2  21618  rngqiprng  21622  rng2idl1cntr  21631