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| Mirrors > Home > MPE Home > Th. List > Mathboxes > dvdsruassoi | Structured version Visualization version GIF version | ||
| Description: If two elements 𝑋 and 𝑌 of a ring 𝑅 are unit multiples, then they are associates, i.e. each divides the other. (Contributed by Thierry Arnoux, 22-Mar-2025.) |
| Ref | Expression |
|---|---|
| dvdsrspss.b | ⊢ 𝐵 = (Base‘𝑅) |
| dvdsrspss.k | ⊢ 𝐾 = (RSpan‘𝑅) |
| dvdsrspss.d | ⊢ ∥ = (∥r‘𝑅) |
| dvdsrspss.x | ⊢ (𝜑 → 𝑋 ∈ 𝐵) |
| dvdsrspss.y | ⊢ (𝜑 → 𝑌 ∈ 𝐵) |
| dvdsruassoi.1 | ⊢ 𝑈 = (Unit‘𝑅) |
| dvdsruassoi.2 | ⊢ · = (.r‘𝑅) |
| dvdsruassoi.r | ⊢ (𝜑 → 𝑅 ∈ Ring) |
| dvdsruassoi.3 | ⊢ (𝜑 → 𝑉 ∈ 𝑈) |
| dvdsruassoi.4 | ⊢ (𝜑 → (𝑉 · 𝑋) = 𝑌) |
| Ref | Expression |
|---|---|
| dvdsruassoi | ⊢ (𝜑 → (𝑋 ∥ 𝑌 ∧ 𝑌 ∥ 𝑋)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dvdsrspss.b | . . . . 5 ⊢ 𝐵 = (Base‘𝑅) | |
| 2 | dvdsruassoi.1 | . . . . 5 ⊢ 𝑈 = (Unit‘𝑅) | |
| 3 | 1, 2 | unitss 20615 | . . . 4 ⊢ 𝑈 ⊆ 𝐵 |
| 4 | dvdsruassoi.3 | . . . 4 ⊢ (𝜑 → 𝑉 ∈ 𝑈) | |
| 5 | 3, 4 | sselid 3907 | . . 3 ⊢ (𝜑 → 𝑉 ∈ 𝐵) |
| 6 | oveq1 7431 | . . . . 5 ⊢ (𝑡 = 𝑉 → (𝑡 · 𝑋) = (𝑉 · 𝑋)) | |
| 7 | 6 | eqeq1d 2762 | . . . 4 ⊢ (𝑡 = 𝑉 → ((𝑡 · 𝑋) = 𝑌 ↔ (𝑉 · 𝑋) = 𝑌)) |
| 8 | 7 | adantl 487 | . . 3 ⊢ ((𝜑 ∧ 𝑡 = 𝑉) → ((𝑡 · 𝑋) = 𝑌 ↔ (𝑉 · 𝑋) = 𝑌)) |
| 9 | dvdsruassoi.4 | . . 3 ⊢ (𝜑 → (𝑉 · 𝑋) = 𝑌) | |
| 10 | 5, 8, 9 | rspcedvd 3578 | . 2 ⊢ (𝜑 → ∃𝑡 ∈ 𝐵 (𝑡 · 𝑋) = 𝑌) |
| 11 | dvdsruassoi.r | . . . 4 ⊢ (𝜑 → 𝑅 ∈ Ring) | |
| 12 | eqid 2760 | . . . . 5 ⊢ (invr‘𝑅) = (invr‘𝑅) | |
| 13 | 2, 12, 1 | ringinvcl 20631 | . . . 4 ⊢ ((𝑅 ∈ Ring ∧ 𝑉 ∈ 𝑈) → ((invr‘𝑅)‘𝑉) ∈ 𝐵) |
| 14 | 11, 4, 13 | syl2anc 596 | . . 3 ⊢ (𝜑 → ((invr‘𝑅)‘𝑉) ∈ 𝐵) |
| 15 | oveq1 7431 | . . . . 5 ⊢ (𝑠 = ((invr‘𝑅)‘𝑉) → (𝑠 · 𝑌) = (((invr‘𝑅)‘𝑉) · 𝑌)) | |
| 16 | 15 | eqeq1d 2762 | . . . 4 ⊢ (𝑠 = ((invr‘𝑅)‘𝑉) → ((𝑠 · 𝑌) = 𝑋 ↔ (((invr‘𝑅)‘𝑉) · 𝑌) = 𝑋)) |
| 17 | 16 | adantl 487 | . . 3 ⊢ ((𝜑 ∧ 𝑠 = ((invr‘𝑅)‘𝑉)) → ((𝑠 · 𝑌) = 𝑋 ↔ (((invr‘𝑅)‘𝑉) · 𝑌) = 𝑋)) |
| 18 | dvdsruassoi.2 | . . . . 5 ⊢ · = (.r‘𝑅) | |
| 19 | dvdsrspss.x | . . . . 5 ⊢ (𝜑 → 𝑋 ∈ 𝐵) | |
| 20 | 1, 18, 11, 14, 5, 19 | ringassd 20494 | . . . 4 ⊢ (𝜑 → ((((invr‘𝑅)‘𝑉) · 𝑉) · 𝑋) = (((invr‘𝑅)‘𝑉) · (𝑉 · 𝑋))) |
| 21 | eqid 2760 | . . . . . . . 8 ⊢ (1r‘𝑅) = (1r‘𝑅) | |
| 22 | 2, 12, 18, 21 | unitlinv 20632 | . . . . . . 7 ⊢ ((𝑅 ∈ Ring ∧ 𝑉 ∈ 𝑈) → (((invr‘𝑅)‘𝑉) · 𝑉) = (1r‘𝑅)) |
| 23 | 11, 4, 22 | syl2anc 596 | . . . . . 6 ⊢ (𝜑 → (((invr‘𝑅)‘𝑉) · 𝑉) = (1r‘𝑅)) |
| 24 | 23 | oveq1d 7439 | . . . . 5 ⊢ (𝜑 → ((((invr‘𝑅)‘𝑉) · 𝑉) · 𝑋) = ((1r‘𝑅) · 𝑋)) |
| 25 | 1, 18, 21, 11, 19 | ringlidmd 20510 | . . . . 5 ⊢ (𝜑 → ((1r‘𝑅) · 𝑋) = 𝑋) |
| 26 | 24, 25 | eqtrd 2795 | . . . 4 ⊢ (𝜑 → ((((invr‘𝑅)‘𝑉) · 𝑉) · 𝑋) = 𝑋) |
| 27 | 9 | oveq2d 7440 | . . . 4 ⊢ (𝜑 → (((invr‘𝑅)‘𝑉) · (𝑉 · 𝑋)) = (((invr‘𝑅)‘𝑉) · 𝑌)) |
| 28 | 20, 26, 27 | 3eqtr3rd 2804 | . . 3 ⊢ (𝜑 → (((invr‘𝑅)‘𝑉) · 𝑌) = 𝑋) |
| 29 | 14, 17, 28 | rspcedvd 3578 | . 2 ⊢ (𝜑 → ∃𝑠 ∈ 𝐵 (𝑠 · 𝑌) = 𝑋) |
| 30 | dvdsrspss.d | . . . . 5 ⊢ ∥ = (∥r‘𝑅) | |
| 31 | 1, 30, 18 | dvdsr 20601 | . . . 4 ⊢ (𝑋 ∥ 𝑌 ↔ (𝑋 ∈ 𝐵 ∧ ∃𝑡 ∈ 𝐵 (𝑡 · 𝑋) = 𝑌)) |
| 32 | 19 | biantrurd 542 | . . . 4 ⊢ (𝜑 → (∃𝑡 ∈ 𝐵 (𝑡 · 𝑋) = 𝑌 ↔ (𝑋 ∈ 𝐵 ∧ ∃𝑡 ∈ 𝐵 (𝑡 · 𝑋) = 𝑌))) |
| 33 | 31, 32 | bitr4id 293 | . . 3 ⊢ (𝜑 → (𝑋 ∥ 𝑌 ↔ ∃𝑡 ∈ 𝐵 (𝑡 · 𝑋) = 𝑌)) |
| 34 | 1, 30, 18 | dvdsr 20601 | . . . 4 ⊢ (𝑌 ∥ 𝑋 ↔ (𝑌 ∈ 𝐵 ∧ ∃𝑠 ∈ 𝐵 (𝑠 · 𝑌) = 𝑋)) |
| 35 | dvdsrspss.y | . . . . 5 ⊢ (𝜑 → 𝑌 ∈ 𝐵) | |
| 36 | 35 | biantrurd 542 | . . . 4 ⊢ (𝜑 → (∃𝑠 ∈ 𝐵 (𝑠 · 𝑌) = 𝑋 ↔ (𝑌 ∈ 𝐵 ∧ ∃𝑠 ∈ 𝐵 (𝑠 · 𝑌) = 𝑋))) |
| 37 | 34, 36 | bitr4id 293 | . . 3 ⊢ (𝜑 → (𝑌 ∥ 𝑋 ↔ ∃𝑠 ∈ 𝐵 (𝑠 · 𝑌) = 𝑋)) |
| 38 | 33, 37 | anbi12d 644 | . 2 ⊢ (𝜑 → ((𝑋 ∥ 𝑌 ∧ 𝑌 ∥ 𝑋) ↔ (∃𝑡 ∈ 𝐵 (𝑡 · 𝑋) = 𝑌 ∧ ∃𝑠 ∈ 𝐵 (𝑠 · 𝑌) = 𝑋))) |
| 39 | 10, 29, 38 | mpbir2and 726 | 1 ⊢ (𝜑 → (𝑋 ∥ 𝑌 ∧ 𝑌 ∥ 𝑋)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1569 ∈ wcel 2144 ∃wrex 3086 class class class wbr 5102 ‘cfv 6543 (class class class)co 7424 Basecbs 17396 .rcmulr 17438 1rcur 20416 Ringcrg 20468 ∥rcdsr 20593 Unitcui 20594 invrcinvr 20626 RSpancrsp 21494 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5327 ax-pr 5391 ax-un 7755 ax-cnex 11263 ax-resscn 11264 ax-1cn 11265 ax-icn 11266 ax-addcl 11267 ax-addrcl 11268 ax-mulcl 11269 ax-mulrcl 11270 ax-mulcom 11271 ax-addass 11272 ax-mulass 11273 ax-distr 11274 ax-i2m1 11275 ax-1ne0 11276 ax-1rid 11277 ax-rnegex 11278 ax-rrecex 11279 ax-cnre 11280 ax-pre-lttri 11281 ax-pre-lttrn 11282 ax-pre-ltadd 11283 ax-pre-mulgt0 11284 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3848 df-ss 3897 df-pss 4013 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6307 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 df-iota 6497 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7381 df-ov 7427 df-oprab 7428 df-mpo 7429 df-om 7882 df-2nd 8006 df-tpos 8250 df-frecs 8306 df-wrecs 8337 df-recs 8386 df-rdg 8425 df-er 8724 df-en 8981 df-dom 8982 df-sdom 8983 df-pnf 11352 df-mnf 11353 df-xr 11354 df-ltxr 11355 df-le 11356 df-sub 11550 df-neg 11551 df-nn 12343 df-2 12412 df-3 12413 df-sets 17351 df-slot 17369 df-ndx 17381 df-base 17397 df-ress 17418 df-plusg 17450 df-mulr 17451 df-0g 17621 df-mgm 18825 df-sgrp 18917 df-mnd 18933 df-grp 19156 df-minusg 19157 df-cmn 20005 df-abl 20006 df-mgp 20370 df-rng 20384 df-ur 20417 df-ring 20470 df-oppr 20576 df-dvdsr 20596 df-unit 20597 df-invr 20627 |
| This theorem is used by: dvdsruasso 33990 mxidlirred 34047 |
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