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| Mirrors > Home > MPE Home > Th. List > subrngss | Structured version Visualization version GIF version | ||
| Description: A subring is a subset. (Contributed by AV, 14-Feb-2025.) |
| Ref | Expression |
|---|---|
| subrngss.1 | ⊢ 𝐵 = (Base‘𝑅) |
| Ref | Expression |
|---|---|
| subrngss | ⊢ (𝐴 ∈ (SubRng‘𝑅) → 𝐴 ⊆ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | subrngss.1 | . . 3 ⊢ 𝐵 = (Base‘𝑅) | |
| 2 | 1 | issubrng 20463 | . 2 ⊢ (𝐴 ∈ (SubRng‘𝑅) ↔ (𝑅 ∈ Rng ∧ (𝑅 ↾s 𝐴) ∈ Rng ∧ 𝐴 ⊆ 𝐵)) |
| 3 | 2 | simp3bi 1147 | 1 ⊢ (𝐴 ∈ (SubRng‘𝑅) → 𝐴 ⊆ 𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1540 ∈ wcel 2109 ⊆ wss 3917 ‘cfv 6514 (class class class)co 7390 Basecbs 17186 ↾s cress 17207 Rngcrng 20068 SubRngcsubrng 20461 |
| 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-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-sep 5254 ax-nul 5264 ax-pow 5323 ax-pr 5390 |
| 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-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-ral 3046 df-rex 3055 df-rab 3409 df-v 3452 df-dif 3920 df-un 3922 df-in 3924 df-ss 3934 df-nul 4300 df-if 4492 df-pw 4568 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4875 df-br 5111 df-opab 5173 df-mpt 5192 df-id 5536 df-xp 5647 df-rel 5648 df-cnv 5649 df-co 5650 df-dm 5651 df-rn 5652 df-res 5653 df-ima 5654 df-iota 6467 df-fun 6516 df-fv 6522 df-ov 7393 df-subrng 20462 |
| This theorem is referenced by: subrngsubg 20468 subrngmre 20478 subsubrng 20479 rhmimasubrnglem 20481 rhmimasubrng 20482 |
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