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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 20599 | . . . 4 ⊢ 𝑈 ⊆ 𝐵 |
| 4 | dvdsruassoi.3 | . . . 4 ⊢ (𝜑 → 𝑉 ∈ 𝑈) | |
| 5 | 3, 4 | sselid 3929 | . . 3 ⊢ (𝜑 → 𝑉 ∈ 𝐵) |
| 6 | oveq1 7425 | . . . . 5 ⊢ (𝑡 = 𝑉 → (𝑡 · 𝑋) = (𝑉 · 𝑋)) | |
| 7 | 6 | eqeq1d 2763 | . . . 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 3579 | . 2 ⊢ (𝜑 → ∃𝑡 ∈ 𝐵 (𝑡 · 𝑋) = 𝑌) |
| 11 | dvdsruassoi.r | . . . 4 ⊢ (𝜑 → 𝑅 ∈ Ring) | |
| 12 | eqid 2761 | . . . . 5 ⊢ (invr‘𝑅) = (invr‘𝑅) | |
| 13 | 2, 12, 1 | ringinvcl 20615 | . . . 4 ⊢ ((𝑅 ∈ Ring ∧ 𝑉 ∈ 𝑈) → ((invr‘𝑅)‘𝑉) ∈ 𝐵) |
| 14 | 11, 4, 13 | syl2anc 596 | . . 3 ⊢ (𝜑 → ((invr‘𝑅)‘𝑉) ∈ 𝐵) |
| 15 | oveq1 7425 | . . . . 5 ⊢ (𝑠 = ((invr‘𝑅)‘𝑉) → (𝑠 · 𝑌) = (((invr‘𝑅)‘𝑉) · 𝑌)) | |
| 16 | 15 | eqeq1d 2763 | . . . 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 20478 | . . . 4 ⊢ (𝜑 → ((((invr‘𝑅)‘𝑉) · 𝑉) · 𝑋) = (((invr‘𝑅)‘𝑉) · (𝑉 · 𝑋))) |
| 21 | eqid 2761 | . . . . . . . 8 ⊢ (1r‘𝑅) = (1r‘𝑅) | |
| 22 | 2, 12, 18, 21 | unitlinv 20616 | . . . . . . 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 7433 | . . . . 5 ⊢ (𝜑 → ((((invr‘𝑅)‘𝑉) · 𝑉) · 𝑋) = ((1r‘𝑅) · 𝑋)) |
| 25 | 1, 18, 21, 11, 19 | ringlidmd 20494 | . . . . 5 ⊢ (𝜑 → ((1r‘𝑅) · 𝑋) = 𝑋) |
| 26 | 24, 25 | eqtrd 2796 | . . . 4 ⊢ (𝜑 → ((((invr‘𝑅)‘𝑉) · 𝑉) · 𝑋) = 𝑋) |
| 27 | 9 | oveq2d 7434 | . . . 4 ⊢ (𝜑 → (((invr‘𝑅)‘𝑉) · (𝑉 · 𝑋)) = (((invr‘𝑅)‘𝑉) · 𝑌)) |
| 28 | 20, 26, 27 | 3eqtr3rd 2805 | . . 3 ⊢ (𝜑 → (((invr‘𝑅)‘𝑉) · 𝑌) = 𝑋) |
| 29 | 14, 17, 28 | rspcedvd 3579 | . 2 ⊢ (𝜑 → ∃𝑠 ∈ 𝐵 (𝑠 · 𝑌) = 𝑋) |
| 30 | dvdsrspss.d | . . . . 5 ⊢ ∥ = (∥r‘𝑅) | |
| 31 | 1, 30, 18 | dvdsr 20585 | . . . 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 20585 | . . . 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 2145 ∃wrex 3087 class class class wbr 5103 ‘cfv 6537 (class class class)co 7418 Basecbs 17380 .rcmulr 17422 1rcur 20400 Ringcrg 20452 ∥rcdsr 20577 Unitcui 20578 invrcinvr 20610 RSpancrsp 21478 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-rep 5232 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7749 ax-cnex 11249 ax-resscn 11250 ax-1cn 11251 ax-icn 11252 ax-addcl 11253 ax-addrcl 11254 ax-mulcl 11255 ax-mulrcl 11256 ax-mulcom 11257 ax-addass 11258 ax-mulass 11259 ax-distr 11260 ax-i2m1 11261 ax-1ne0 11262 ax-1rid 11263 ax-rnegex 11264 ax-rrecex 11265 ax-cnre 11266 ax-pre-lttri 11267 ax-pre-lttrn 11268 ax-pre-ltadd 11269 ax-pre-mulgt0 11270 |
| 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 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 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 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7375 df-ov 7421 df-oprab 7422 df-mpo 7423 df-om 7876 df-2nd 8000 df-tpos 8236 df-frecs 8292 df-wrecs 8323 df-recs 8372 df-rdg 8411 df-er 8710 df-en 8967 df-dom 8968 df-sdom 8969 df-pnf 11338 df-mnf 11339 df-xr 11340 df-ltxr 11341 df-le 11342 df-sub 11536 df-neg 11537 df-nn 12329 df-2 12398 df-3 12399 df-sets 17335 df-slot 17353 df-ndx 17365 df-base 17381 df-ress 17402 df-plusg 17434 df-mulr 17435 df-0g 17605 df-mgm 18809 df-sgrp 18901 df-mnd 18917 df-grp 19140 df-minusg 19141 df-cmn 19989 df-abl 19990 df-mgp 20354 df-rng 20368 df-ur 20401 df-ring 20454 df-oppr 20560 df-dvdsr 20580 df-unit 20581 df-invr 20611 |
| This theorem is used by: dvdsruasso 33933 mxidlirred 33990 |
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