MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  subrngss Structured version   Visualization version   GIF version

Theorem subrngss 20851
Description: A subring is a subset. (Contributed by AV, 14-Feb-2025.)
Hypothesis
Ref Expression
subrngss.1 𝐵 = (Base‘𝑅)
Assertion
Ref Expression
subrngss (𝐴 ∈ (SubRng‘𝑅) → 𝐴 ⊆ 𝐵)

Proof of Theorem subrngss
StepHypRef Expression
1 subrngss.1 . . 3 𝐵 = (Base‘𝑅)
21issubrng 20850 . 2 (𝐴 ∈ (SubRng‘𝑅) ↔ (𝑅 ∈ Rng ∧ (𝑅 ↾s 𝐴) ∈ Rng ∧ 𝐴 ⊆ 𝐵))
32simp3bi 1165 1 (𝐴 ∈ (SubRng‘𝑅) → 𝐴 ⊆ 𝐵)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   = wceq 1570   ∈ wcel 2147   ⊆ wss 3900  ‘cfv 6566  (class class class)co 7451  Basecbs 17431   ↾s cress 17452  Rngcrng 20425  SubRngcsubrng 20848
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 5255  ax-nul 5266  ax-pow 5334  ax-pr 5398
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-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 4841  df-uni 4873  df-br 5109  df-opab 5174  df-mpt 5193  df-id 5553  df-xp 5664  df-rel 5665  df-cnv 5666  df-co 5667  df-dm 5668  df-rn 5669  df-res 5670  df-ima 5671  df-iota 6520  df-fun 6568  df-fv 6574  df-ov 7454  df-subrng 20849
This theorem is used by:  subrngsubg  20855  subrngmre  20865  subsubrng  20866  rhmimasubrnglem  20868  rhmimasubrng  20869
  Copyright terms: Public domain W3C validator