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| Mirrors > Home > MPE Home > Th. List > Mathboxes > sdrgdvcl | Structured version Visualization version GIF version | ||
| Description: A sub-division-ring is closed under the ring division operation. (Contributed by Thierry Arnoux, 15-Jan-2025.) |
| Ref | Expression |
|---|---|
| sdrgdvcl.i | ⊢ / = (/r‘𝑅) |
| sdrgdvcl.0 | ⊢ 0 = (0g‘𝑅) |
| sdrgdvcl.a | ⊢ (𝜑 → 𝐴 ∈ (SubDRing‘𝑅)) |
| sdrgdvcl.x | ⊢ (𝜑 → 𝑋 ∈ 𝐴) |
| sdrgdvcl.y | ⊢ (𝜑 → 𝑌 ∈ 𝐴) |
| sdrgdvcl.1 | ⊢ (𝜑 → 𝑌 ≠ 0 ) |
| Ref | Expression |
|---|---|
| sdrgdvcl | ⊢ (𝜑 → (𝑋 / 𝑌) ∈ 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sdrgdvcl.a | . . . . . 6 ⊢ (𝜑 → 𝐴 ∈ (SubDRing‘𝑅)) | |
| 2 | issdrg 20928 | . . . . . 6 ⊢ (𝐴 ∈ (SubDRing‘𝑅) ↔ (𝑅 ∈ DivRing ∧ 𝐴 ∈ (SubRing‘𝑅) ∧ (𝑅 ↾s 𝐴) ∈ DivRing)) | |
| 3 | 1, 2 | sylib 221 | . . . . 5 ⊢ (𝜑 → (𝑅 ∈ DivRing ∧ 𝐴 ∈ (SubRing‘𝑅) ∧ (𝑅 ↾s 𝐴) ∈ DivRing)) |
| 4 | 3 | simp3d 1162 | . . . 4 ⊢ (𝜑 → (𝑅 ↾s 𝐴) ∈ DivRing) |
| 5 | 4 | drngringd 20872 | . . 3 ⊢ (𝜑 → (𝑅 ↾s 𝐴) ∈ Ring) |
| 6 | sdrgdvcl.x | . . . 4 ⊢ (𝜑 → 𝑋 ∈ 𝐴) | |
| 7 | 3 | simp2d 1161 | . . . . 5 ⊢ (𝜑 → 𝐴 ∈ (SubRing‘𝑅)) |
| 8 | eqid 2766 | . . . . . 6 ⊢ (𝑅 ↾s 𝐴) = (𝑅 ↾s 𝐴) | |
| 9 | 8 | subrgbas 20717 | . . . . 5 ⊢ (𝐴 ∈ (SubRing‘𝑅) → 𝐴 = (Base‘(𝑅 ↾s 𝐴))) |
| 10 | 7, 9 | syl 18 | . . . 4 ⊢ (𝜑 → 𝐴 = (Base‘(𝑅 ↾s 𝐴))) |
| 11 | 6, 10 | eleqtrd 2868 | . . 3 ⊢ (𝜑 → 𝑋 ∈ (Base‘(𝑅 ↾s 𝐴))) |
| 12 | sdrgdvcl.y | . . . . 5 ⊢ (𝜑 → 𝑌 ∈ 𝐴) | |
| 13 | 12, 10 | eleqtrd 2868 | . . . 4 ⊢ (𝜑 → 𝑌 ∈ (Base‘(𝑅 ↾s 𝐴))) |
| 14 | sdrgdvcl.1 | . . . . 5 ⊢ (𝜑 → 𝑌 ≠ 0 ) | |
| 15 | sdrgdvcl.0 | . . . . . . 7 ⊢ 0 = (0g‘𝑅) | |
| 16 | 8, 15 | subrg0 20715 | . . . . . 6 ⊢ (𝐴 ∈ (SubRing‘𝑅) → 0 = (0g‘(𝑅 ↾s 𝐴))) |
| 17 | 7, 16 | syl 18 | . . . . 5 ⊢ (𝜑 → 0 = (0g‘(𝑅 ↾s 𝐴))) |
| 18 | 14, 17 | neeqtrd 3030 | . . . 4 ⊢ (𝜑 → 𝑌 ≠ (0g‘(𝑅 ↾s 𝐴))) |
| 19 | eqid 2766 | . . . . . 6 ⊢ (Base‘(𝑅 ↾s 𝐴)) = (Base‘(𝑅 ↾s 𝐴)) | |
| 20 | eqid 2766 | . . . . . 6 ⊢ (Unit‘(𝑅 ↾s 𝐴)) = (Unit‘(𝑅 ↾s 𝐴)) | |
| 21 | eqid 2766 | . . . . . 6 ⊢ (0g‘(𝑅 ↾s 𝐴)) = (0g‘(𝑅 ↾s 𝐴)) | |
| 22 | 19, 20, 21 | drngunit 20869 | . . . . 5 ⊢ ((𝑅 ↾s 𝐴) ∈ DivRing → (𝑌 ∈ (Unit‘(𝑅 ↾s 𝐴)) ↔ (𝑌 ∈ (Base‘(𝑅 ↾s 𝐴)) ∧ 𝑌 ≠ (0g‘(𝑅 ↾s 𝐴))))) |
| 23 | 22 | biimpar 483 | . . . 4 ⊢ (((𝑅 ↾s 𝐴) ∈ DivRing ∧ (𝑌 ∈ (Base‘(𝑅 ↾s 𝐴)) ∧ 𝑌 ≠ (0g‘(𝑅 ↾s 𝐴)))) → 𝑌 ∈ (Unit‘(𝑅 ↾s 𝐴))) |
| 24 | 4, 13, 18, 23 | syl12anc 850 | . . 3 ⊢ (𝜑 → 𝑌 ∈ (Unit‘(𝑅 ↾s 𝐴))) |
| 25 | eqid 2766 | . . . 4 ⊢ (/r‘(𝑅 ↾s 𝐴)) = (/r‘(𝑅 ↾s 𝐴)) | |
| 26 | 19, 20, 25 | dvrcl 20519 | . . 3 ⊢ (((𝑅 ↾s 𝐴) ∈ Ring ∧ 𝑋 ∈ (Base‘(𝑅 ↾s 𝐴)) ∧ 𝑌 ∈ (Unit‘(𝑅 ↾s 𝐴))) → (𝑋(/r‘(𝑅 ↾s 𝐴))𝑌) ∈ (Base‘(𝑅 ↾s 𝐴))) |
| 27 | 5, 11, 24, 26 | syl3anc 1398 | . 2 ⊢ (𝜑 → (𝑋(/r‘(𝑅 ↾s 𝐴))𝑌) ∈ (Base‘(𝑅 ↾s 𝐴))) |
| 28 | sdrgdvcl.i | . . . 4 ⊢ / = (/r‘𝑅) | |
| 29 | 8, 28, 20, 25 | subrgdv 20725 | . . 3 ⊢ ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝑋 ∈ 𝐴 ∧ 𝑌 ∈ (Unit‘(𝑅 ↾s 𝐴))) → (𝑋 / 𝑌) = (𝑋(/r‘(𝑅 ↾s 𝐴))𝑌)) |
| 30 | 7, 6, 24, 29 | syl3anc 1398 | . 2 ⊢ (𝜑 → (𝑋 / 𝑌) = (𝑋(/r‘(𝑅 ↾s 𝐴))𝑌)) |
| 31 | 27, 30, 10 | 3eltr4d 2881 | 1 ⊢ (𝜑 → (𝑋 / 𝑌) ∈ 𝐴) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∧ w3a 1103 = wceq 1570 ∈ wcel 2146 ≠ wne 2961 ‘cfv 6543 (class class class)co 7423 Basecbs 17294 ↾s cress 17315 0gc0g 17517 Ringcrg 20346 Unitcui 20470 /rcdvr 20515 SubRingcsubrg 20705 DivRingcdr 20864 SubDRingcsdrg 20926 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-rep 5243 ax-sep 5262 ax-nul 5274 ax-pow 5341 ax-pr 5409 ax-un 7745 ax-cnex 11174 ax-resscn 11175 ax-1cn 11176 ax-icn 11177 ax-addcl 11178 ax-addrcl 11179 ax-mulcl 11180 ax-mulrcl 11181 ax-mulcom 11182 ax-addass 11183 ax-mulass 11184 ax-distr 11185 ax-i2m1 11186 ax-1ne0 11187 ax-1rid 11188 ax-rnegex 11189 ax-rrecex 11190 ax-cnre 11191 ax-pre-lttri 11192 ax-pre-lttrn 11193 ax-pre-ltadd 11194 ax-pre-mulgt0 11195 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-nel 3068 df-ral 3083 df-rex 3093 df-rmo 3372 df-reu 3373 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-pss 3928 df-nul 4290 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-iun 4963 df-br 5115 df-opab 5179 df-mpt 5198 df-tr 5224 df-id 5561 df-eprel 5566 df-po 5574 df-so 5575 df-fr 5619 df-we 5621 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-pred 6309 df-ord 6370 df-on 6371 df-lim 6372 df-suc 6373 df-iota 6499 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7380 df-ov 7426 df-oprab 7427 df-mpo 7428 df-om 7872 df-1st 7995 df-2nd 7996 df-tpos 8231 df-frecs 8287 df-wrecs 8318 df-recs 8367 df-rdg 8406 df-er 8703 df-en 8953 df-dom 8954 df-sdom 8955 df-pnf 11263 df-mnf 11264 df-xr 11265 df-ltxr 11266 df-le 11267 df-sub 11461 df-neg 11462 df-nn 12252 df-2 12321 df-3 12322 df-sets 17249 df-slot 17267 df-ndx 17279 df-base 17295 df-ress 17316 df-plusg 17348 df-mulr 17349 df-0g 17519 df-mgm 18723 df-sgrp 18806 df-mnd 18822 df-grp 19034 df-minusg 19035 df-subg 19220 df-cmn 19883 df-abl 19884 df-mgp 20248 df-rng 20262 df-ur 20295 df-ring 20348 df-oppr 20452 df-dvdsr 20472 df-unit 20473 df-invr 20503 df-dvr 20516 df-subrg 20706 df-drng 20866 df-sdrg 20927 |
| This theorem is used by: 1fldgenq 33674 constrelextdg2 34168 |
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