Theorem rng0cl 20181

Description: The zero element of a non-unital ring belongs to its base set. (Contributed by AV, 16-Feb-2025.)

Hypotheses

Ref	Expression
rng0cl.b	⊢ 𝐵 = (Base‘𝑅)
rng0cl.z	⊢ 0 = (0g‘𝑅)

Assertion

Ref	Expression
rng0cl	⊢ (𝑅 ∈ Rng → 0 ∈ 𝐵)

Proof of Theorem rng0cl

Step	Hyp	Ref	Expression
1		rnggrp 20176	. 2 ⊢ (𝑅 ∈ Rng → 𝑅 ∈ Grp)
2		rng0cl.b	. . 3 ⊢ 𝐵 = (Base‘𝑅)
3		rng0cl.z	. . 3 ⊢ 0 = (0g‘𝑅)
4	2, 3	grpidcl 18996	. 2 ⊢ (𝑅 ∈ Grp → 0 ∈ 𝐵)
5	1, 4	syl 17	1 ⊢ (𝑅 ∈ Rng → 0 ∈ 𝐵)

Syntax hints:   → wi 4   = wceq 1537   ∈ wcel 2106  ‘cfv 6563  Basecbs 17245  0_gc0g 17486  Grpcgrp 18964  Rngcrng 20170

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1908  ax-6 1965  ax-7 2005  ax-8 2108  ax-9 2116  ax-10 2139  ax-11 2155  ax-12 2175  ax-ext 2706  ax-sep 5302  ax-nul 5312  ax-pr 5438

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1540  df-fal 1550  df-ex 1777  df-nf 1781  df-sb 2063  df-mo 2538  df-eu 2567  df-clab 2713  df-cleq 2727  df-clel 2814  df-nfc 2890  df-ne 2939  df-ral 3060  df-rex 3069  df-rmo 3378  df-reu 3379  df-rab 3434  df-v 3480  df-sbc 3792  df-dif 3966  df-un 3968  df-in 3970  df-ss 3980  df-nul 4340  df-if 4532  df-sn 4632  df-pr 4634  df-op 4638  df-uni 4913  df-br 5149  df-opab 5211  df-mpt 5232  df-id 5583  df-xp 5695  df-rel 5696  df-cnv 5697  df-co 5698  df-dm 5699  df-iota 6516  df-fun 6565  df-fv 6571  df-riota 7388  df-ov 7434  df-0g 17488  df-mgm 18666  df-sgrp 18745  df-mnd 18761  df-grp 18967  df-abl 19816  df-rng 20171

This theorem is referenced by:  rngrz  20184  cntzsubrng  20584  rnglidl0  21257  rngqiprngimf1lem  21322