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| Mirrors > Home > MPE Home > Th. List > irredlmul | Structured version Visualization version GIF version | ||
| Description: The product of a unit and an irreducible element is irreducible. (Contributed by Mario Carneiro, 4-Dec-2014.) |
| Ref | Expression |
|---|---|
| irredn0.i | ⊢ 𝐼 = (Irred‘𝑅) |
| irredrmul.u | ⊢ 𝑈 = (Unit‘𝑅) |
| irredrmul.t | ⊢ · = (.r‘𝑅) |
| Ref | Expression |
|---|---|
| irredlmul | ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝑈 ∧ 𝑌 ∈ 𝐼) → (𝑋 · 𝑌) ∈ 𝐼) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2733 | . . 3 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
| 2 | irredrmul.t | . . 3 ⊢ · = (.r‘𝑅) | |
| 3 | eqid 2733 | . . 3 ⊢ (oppr‘𝑅) = (oppr‘𝑅) | |
| 4 | eqid 2733 | . . 3 ⊢ (.r‘(oppr‘𝑅)) = (.r‘(oppr‘𝑅)) | |
| 5 | 1, 2, 3, 4 | opprmul 20260 | . 2 ⊢ (𝑌(.r‘(oppr‘𝑅))𝑋) = (𝑋 · 𝑌) |
| 6 | 3 | opprring 20267 | . . . 4 ⊢ (𝑅 ∈ Ring → (oppr‘𝑅) ∈ Ring) |
| 7 | irredn0.i | . . . . . 6 ⊢ 𝐼 = (Irred‘𝑅) | |
| 8 | 3, 7 | opprirred 20342 | . . . . 5 ⊢ 𝐼 = (Irred‘(oppr‘𝑅)) |
| 9 | irredrmul.u | . . . . . 6 ⊢ 𝑈 = (Unit‘𝑅) | |
| 10 | 9, 3 | opprunit 20297 | . . . . 5 ⊢ 𝑈 = (Unit‘(oppr‘𝑅)) |
| 11 | 8, 10, 4 | irredrmul 20347 | . . . 4 ⊢ (((oppr‘𝑅) ∈ Ring ∧ 𝑌 ∈ 𝐼 ∧ 𝑋 ∈ 𝑈) → (𝑌(.r‘(oppr‘𝑅))𝑋) ∈ 𝐼) |
| 12 | 6, 11 | syl3an1 1163 | . . 3 ⊢ ((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐼 ∧ 𝑋 ∈ 𝑈) → (𝑌(.r‘(oppr‘𝑅))𝑋) ∈ 𝐼) |
| 13 | 12 | 3com23 1126 | . 2 ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝑈 ∧ 𝑌 ∈ 𝐼) → (𝑌(.r‘(oppr‘𝑅))𝑋) ∈ 𝐼) |
| 14 | 5, 13 | eqeltrrid 2838 | 1 ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝑈 ∧ 𝑌 ∈ 𝐼) → (𝑋 · 𝑌) ∈ 𝐼) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ w3a 1086 = wceq 1541 ∈ wcel 2113 ‘cfv 6486 (class class class)co 7352 Basecbs 17122 .rcmulr 17164 Ringcrg 20153 opprcoppr 20256 Unitcui 20275 Irredcir 20276 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2705 ax-rep 5219 ax-sep 5236 ax-nul 5246 ax-pow 5305 ax-pr 5372 ax-un 7674 ax-cnex 11069 ax-resscn 11070 ax-1cn 11071 ax-icn 11072 ax-addcl 11073 ax-addrcl 11074 ax-mulcl 11075 ax-mulrcl 11076 ax-mulcom 11077 ax-addass 11078 ax-mulass 11079 ax-distr 11080 ax-i2m1 11081 ax-1ne0 11082 ax-1rid 11083 ax-rnegex 11084 ax-rrecex 11085 ax-cnre 11086 ax-pre-lttri 11087 ax-pre-lttrn 11088 ax-pre-ltadd 11089 ax-pre-mulgt0 11090 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2725 df-clel 2808 df-nfc 2882 df-ne 2930 df-nel 3034 df-ral 3049 df-rex 3058 df-rmo 3347 df-reu 3348 df-rab 3397 df-v 3439 df-sbc 3738 df-csb 3847 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3918 df-nul 4283 df-if 4475 df-pw 4551 df-sn 4576 df-pr 4578 df-op 4582 df-uni 4859 df-iun 4943 df-br 5094 df-opab 5156 df-mpt 5175 df-tr 5201 df-id 5514 df-eprel 5519 df-po 5527 df-so 5528 df-fr 5572 df-we 5574 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-pred 6253 df-ord 6314 df-on 6315 df-lim 6316 df-suc 6317 df-iota 6442 df-fun 6488 df-fn 6489 df-f 6490 df-f1 6491 df-fo 6492 df-f1o 6493 df-fv 6494 df-riota 7309 df-ov 7355 df-oprab 7356 df-mpo 7357 df-om 7803 df-1st 7927 df-2nd 7928 df-tpos 8162 df-frecs 8217 df-wrecs 8248 df-recs 8297 df-rdg 8335 df-er 8628 df-en 8876 df-dom 8877 df-sdom 8878 df-pnf 11155 df-mnf 11156 df-xr 11157 df-ltxr 11158 df-le 11159 df-sub 11353 df-neg 11354 df-nn 12133 df-2 12195 df-3 12196 df-sets 17077 df-slot 17095 df-ndx 17107 df-base 17123 df-ress 17144 df-plusg 17176 df-mulr 17177 df-0g 17347 df-mgm 18550 df-sgrp 18629 df-mnd 18645 df-grp 18851 df-minusg 18852 df-cmn 19696 df-abl 19697 df-mgp 20061 df-rng 20073 df-ur 20102 df-ring 20155 df-oppr 20257 df-dvdsr 20277 df-unit 20278 df-irred 20279 df-invr 20308 df-dvr 20321 |
| This theorem is referenced by: (None) |
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