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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 20872 | . . . . . 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 20822 | . . 3 ⊢ (𝜑 → (𝑅 ↾s 𝐴) ∈ Ring) |
| 6 | sdrgdvcl.x | . . . 4 ⊢ (𝜑 → 𝑋 ∈ 𝐴) | |
| 7 | 3 | simp2d 1161 | . . . . 5 ⊢ (𝜑 → 𝐴 ∈ (SubRing‘𝑅)) |
| 8 | eqid 2763 | . . . . . 6 ⊢ (𝑅 ↾s 𝐴) = (𝑅 ↾s 𝐴) | |
| 9 | 8 | subrgbas 20667 | . . . . 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 2865 | . . 3 ⊢ (𝜑 → 𝑋 ∈ (Base‘(𝑅 ↾s 𝐴))) |
| 12 | sdrgdvcl.y | . . . . 5 ⊢ (𝜑 → 𝑌 ∈ 𝐴) | |
| 13 | 12, 10 | eleqtrd 2865 | . . . 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 20665 | . . . . . 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 3027 | . . . 4 ⊢ (𝜑 → 𝑌 ≠ (0g‘(𝑅 ↾s 𝐴))) |
| 19 | eqid 2763 | . . . . . 6 ⊢ (Base‘(𝑅 ↾s 𝐴)) = (Base‘(𝑅 ↾s 𝐴)) | |
| 20 | eqid 2763 | . . . . . 6 ⊢ (Unit‘(𝑅 ↾s 𝐴)) = (Unit‘(𝑅 ↾s 𝐴)) | |
| 21 | eqid 2763 | . . . . . 6 ⊢ (0g‘(𝑅 ↾s 𝐴)) = (0g‘(𝑅 ↾s 𝐴)) | |
| 22 | 19, 20, 21 | drngunit 20819 | . . . . 5 ⊢ ((𝑅 ↾s 𝐴) ∈ DivRing → (𝑌 ∈ (Unit‘(𝑅 ↾s 𝐴)) ↔ (𝑌 ∈ (Base‘(𝑅 ↾s 𝐴)) ∧ 𝑌 ≠ (0g‘(𝑅 ↾s 𝐴))))) |
| 23 | 22 | biimpar 482 | . . . 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 849 | . . 3 ⊢ (𝜑 → 𝑌 ∈ (Unit‘(𝑅 ↾s 𝐴))) |
| 25 | eqid 2763 | . . . 4 ⊢ (/r‘(𝑅 ↾s 𝐴)) = (/r‘(𝑅 ↾s 𝐴)) | |
| 26 | 19, 20, 25 | dvrcl 20487 | . . 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 20675 | . . 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 2878 | 1 ⊢ (𝜑 → (𝑋 / 𝑌) ∈ 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 ∧ w3a 1103 = wceq 1570 ∈ wcel 2143 ≠ wne 2958 ‘cfv 6538 (class class class)co 7412 Basecbs 17270 ↾s cress 17291 0gc0g 17493 Ringcrg 20316 Unitcui 20438 /rcdvr 20483 SubRingcsubrg 20655 DivRingcdr 20814 SubDRingcsdrg 20870 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-rep 5239 ax-sep 5258 ax-nul 5270 ax-pow 5338 ax-pr 5406 ax-un 7734 ax-cnex 11157 ax-resscn 11158 ax-1cn 11159 ax-icn 11160 ax-addcl 11161 ax-addrcl 11162 ax-mulcl 11163 ax-mulrcl 11164 ax-mulcom 11165 ax-addass 11166 ax-mulass 11167 ax-distr 11168 ax-i2m1 11169 ax-1ne0 11170 ax-1rid 11171 ax-rnegex 11172 ax-rrecex 11173 ax-cnre 11174 ax-pre-lttri 11175 ax-pre-lttrn 11176 ax-pre-ltadd 11177 ax-pre-mulgt0 11178 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3065 df-ral 3080 df-rex 3090 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3457 df-sbc 3746 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4288 df-if 4489 df-pw 4565 df-sn 4591 df-pr 4593 df-op 4597 df-uni 4874 df-iun 4959 df-br 5111 df-opab 5175 df-mpt 5194 df-tr 5220 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7864 df-1st 7987 df-2nd 7988 df-tpos 8223 df-frecs 8279 df-wrecs 8310 df-recs 8359 df-rdg 8398 df-er 8695 df-en 8945 df-dom 8946 df-sdom 8947 df-pnf 11246 df-mnf 11247 df-xr 11248 df-ltxr 11249 df-le 11250 df-sub 11444 df-neg 11445 df-nn 12235 df-2 12304 df-3 12305 df-sets 17225 df-slot 17243 df-ndx 17255 df-base 17271 df-ress 17292 df-plusg 17324 df-mulr 17325 df-0g 17495 df-mgm 18699 df-sgrp 18778 df-mnd 18794 df-grp 19004 df-minusg 19005 df-subg 19190 df-cmn 19853 df-abl 19854 df-mgp 20218 df-rng 20232 df-ur 20265 df-ring 20318 df-oppr 20420 df-dvdsr 20440 df-unit 20441 df-invr 20471 df-dvr 20484 df-subrg 20656 df-drng 20816 df-sdrg 20871 |
| This theorem is referenced by: 1fldgenq 33624 constrelextdg2 34118 |
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