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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 20657 | . . . 4 ⊢ 𝑈 ⊆ 𝐵 |
| 4 | dvdsruassoi.3 | . . . 4 ⊢ (𝜑 → 𝑉 ∈ 𝑈) | |
| 5 | 3, 4 | sselid 3911 | . . 3 ⊢ (𝜑 → 𝑉 ∈ 𝐵) |
| 6 | oveq1 7458 | . . . . 5 ⊢ (𝑡 = 𝑉 → (𝑡 · 𝑋) = (𝑉 · 𝑋)) | |
| 7 | 6 | eqeq1d 2765 | . . . 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 3582 | . 2 ⊢ (𝜑 → ∃𝑡 ∈ 𝐵 (𝑡 · 𝑋) = 𝑌) |
| 11 | dvdsruassoi.r | . . . 4 ⊢ (𝜑 → 𝑅 ∈ Ring) | |
| 12 | eqid 2763 | . . . . 5 ⊢ (invr‘𝑅) = (invr‘𝑅) | |
| 13 | 2, 12, 1 | ringinvcl 20673 | . . . 4 ⊢ ((𝑅 ∈ Ring ∧ 𝑉 ∈ 𝑈) → ((invr‘𝑅)‘𝑉) ∈ 𝐵) |
| 14 | 11, 4, 13 | syl2anc 596 | . . 3 ⊢ (𝜑 → ((invr‘𝑅)‘𝑉) ∈ 𝐵) |
| 15 | oveq1 7458 | . . . . 5 ⊢ (𝑠 = ((invr‘𝑅)‘𝑉) → (𝑠 · 𝑌) = (((invr‘𝑅)‘𝑉) · 𝑌)) | |
| 16 | 15 | eqeq1d 2765 | . . . 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 20536 | . . . 4 ⊢ (𝜑 → ((((invr‘𝑅)‘𝑉) · 𝑉) · 𝑋) = (((invr‘𝑅)‘𝑉) · (𝑉 · 𝑋))) |
| 21 | eqid 2763 | . . . . . . . 8 ⊢ (1r‘𝑅) = (1r‘𝑅) | |
| 22 | 2, 12, 18, 21 | unitlinv 20674 | . . . . . . 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 7466 | . . . . 5 ⊢ (𝜑 → ((((invr‘𝑅)‘𝑉) · 𝑉) · 𝑋) = ((1r‘𝑅) · 𝑋)) |
| 25 | 1, 18, 21, 11, 19 | ringlidmd 20552 | . . . . 5 ⊢ (𝜑 → ((1r‘𝑅) · 𝑋) = 𝑋) |
| 26 | 24, 25 | eqtrd 2798 | . . . 4 ⊢ (𝜑 → ((((invr‘𝑅)‘𝑉) · 𝑉) · 𝑋) = 𝑋) |
| 27 | 9 | oveq2d 7467 | . . . 4 ⊢ (𝜑 → (((invr‘𝑅)‘𝑉) · (𝑉 · 𝑋)) = (((invr‘𝑅)‘𝑉) · 𝑌)) |
| 28 | 20, 26, 27 | 3eqtr3rd 2807 | . . 3 ⊢ (𝜑 → (((invr‘𝑅)‘𝑉) · 𝑌) = 𝑋) |
| 29 | 14, 17, 28 | rspcedvd 3582 | . 2 ⊢ (𝜑 → ∃𝑠 ∈ 𝐵 (𝑠 · 𝑌) = 𝑋) |
| 30 | dvdsrspss.d | . . . . 5 ⊢ ∥ = (∥r‘𝑅) | |
| 31 | 1, 30, 18 | dvdsr 20643 | . . . 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 20643 | . . . 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 1570 ∈ wcel 2147 ∃wrex 3090 class class class wbr 5108 ‘cfv 6566 (class class class)co 7451 Basecbs 17431 .rcmulr 17473 1rcur 20458 Ringcrg 20510 ∥rcdsr 20635 Unitcui 20636 invrcinvr 20668 RSpancrsp 21536 |
| 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-rep 5238 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 ax-cnex 11295 ax-resscn 11296 ax-1cn 11297 ax-icn 11298 ax-addcl 11299 ax-addrcl 11300 ax-mulcl 11301 ax-mulrcl 11302 ax-mulcom 11303 ax-addass 11304 ax-mulass 11305 ax-distr 11306 ax-i2m1 11307 ax-1ne0 11308 ax-1rid 11309 ax-rnegex 11310 ax-rrecex 11311 ax-cnre 11312 ax-pre-lttri 11313 ax-pre-lttrn 11314 ax-pre-ltadd 11315 ax-pre-mulgt0 11316 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 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-iun 4958 df-br 5109 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5553 df-eprel 5558 df-po 5566 df-so 5567 df-fr 5611 df-we 5613 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-pred 6330 df-ord 6391 df-on 6392 df-lim 6393 df-suc 6394 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 df-fv 6574 df-riota 7408 df-ov 7454 df-oprab 7455 df-mpo 7456 df-om 7912 df-2nd 8036 df-tpos 8281 df-frecs 8337 df-wrecs 8368 df-recs 8417 df-rdg 8456 df-er 8755 df-en 9012 df-dom 9013 df-sdom 9014 df-pnf 11384 df-mnf 11385 df-xr 11386 df-ltxr 11387 df-le 11388 df-sub 11582 df-neg 11583 df-nn 12376 df-2 12445 df-3 12446 df-sets 17386 df-slot 17404 df-ndx 17416 df-base 17432 df-ress 17453 df-plusg 17486 df-mulr 17487 df-0g 17662 df-mgm 18866 df-sgrp 18958 df-mnd 18974 df-grp 19197 df-minusg 19198 df-cmn 20047 df-abl 20048 df-mgp 20412 df-rng 20426 df-ur 20459 df-ring 20512 df-oppr 20618 df-dvdsr 20638 df-unit 20639 df-invr 20669 |
| This theorem is used by: dvdsruasso 34044 mxidlirred 34101 |
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