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Mirrors > Home > MPE Home > Th. List > unitmulclb | Structured version Visualization version GIF version |
Description: Reversal of unitmulcl 19904 in a commutative ring. (Contributed by Mario Carneiro, 18-Apr-2016.) |
Ref | Expression |
---|---|
unitmulcl.1 | ⊢ 𝑈 = (Unit‘𝑅) |
unitmulcl.2 | ⊢ · = (.r‘𝑅) |
unitmulclb.1 | ⊢ 𝐵 = (Base‘𝑅) |
Ref | Expression |
---|---|
unitmulclb | ⊢ ((𝑅 ∈ CRing ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → ((𝑋 · 𝑌) ∈ 𝑈 ↔ (𝑋 ∈ 𝑈 ∧ 𝑌 ∈ 𝑈))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simp1 1135 | . . . 4 ⊢ ((𝑅 ∈ CRing ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → 𝑅 ∈ CRing) | |
2 | simp2 1136 | . . . . . 6 ⊢ ((𝑅 ∈ CRing ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → 𝑋 ∈ 𝐵) | |
3 | simp3 1137 | . . . . . 6 ⊢ ((𝑅 ∈ CRing ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → 𝑌 ∈ 𝐵) | |
4 | unitmulclb.1 | . . . . . . 7 ⊢ 𝐵 = (Base‘𝑅) | |
5 | eqid 2740 | . . . . . . 7 ⊢ (∥r‘𝑅) = (∥r‘𝑅) | |
6 | unitmulcl.2 | . . . . . . 7 ⊢ · = (.r‘𝑅) | |
7 | 4, 5, 6 | dvdsrmul 19888 | . . . . . 6 ⊢ ((𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → 𝑋(∥r‘𝑅)(𝑌 · 𝑋)) |
8 | 2, 3, 7 | syl2anc 584 | . . . . 5 ⊢ ((𝑅 ∈ CRing ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → 𝑋(∥r‘𝑅)(𝑌 · 𝑋)) |
9 | 4, 6 | crngcom 19799 | . . . . 5 ⊢ ((𝑅 ∈ CRing ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 · 𝑌) = (𝑌 · 𝑋)) |
10 | 8, 9 | breqtrrd 5107 | . . . 4 ⊢ ((𝑅 ∈ CRing ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → 𝑋(∥r‘𝑅)(𝑋 · 𝑌)) |
11 | unitmulcl.1 | . . . . . 6 ⊢ 𝑈 = (Unit‘𝑅) | |
12 | 11, 5 | dvdsunit 19903 | . . . . 5 ⊢ ((𝑅 ∈ CRing ∧ 𝑋(∥r‘𝑅)(𝑋 · 𝑌) ∧ (𝑋 · 𝑌) ∈ 𝑈) → 𝑋 ∈ 𝑈) |
13 | 12 | 3expia 1120 | . . . 4 ⊢ ((𝑅 ∈ CRing ∧ 𝑋(∥r‘𝑅)(𝑋 · 𝑌)) → ((𝑋 · 𝑌) ∈ 𝑈 → 𝑋 ∈ 𝑈)) |
14 | 1, 10, 13 | syl2anc 584 | . . 3 ⊢ ((𝑅 ∈ CRing ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → ((𝑋 · 𝑌) ∈ 𝑈 → 𝑋 ∈ 𝑈)) |
15 | 4, 5, 6 | dvdsrmul 19888 | . . . . 5 ⊢ ((𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) → 𝑌(∥r‘𝑅)(𝑋 · 𝑌)) |
16 | 3, 2, 15 | syl2anc 584 | . . . 4 ⊢ ((𝑅 ∈ CRing ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → 𝑌(∥r‘𝑅)(𝑋 · 𝑌)) |
17 | 11, 5 | dvdsunit 19903 | . . . . 5 ⊢ ((𝑅 ∈ CRing ∧ 𝑌(∥r‘𝑅)(𝑋 · 𝑌) ∧ (𝑋 · 𝑌) ∈ 𝑈) → 𝑌 ∈ 𝑈) |
18 | 17 | 3expia 1120 | . . . 4 ⊢ ((𝑅 ∈ CRing ∧ 𝑌(∥r‘𝑅)(𝑋 · 𝑌)) → ((𝑋 · 𝑌) ∈ 𝑈 → 𝑌 ∈ 𝑈)) |
19 | 1, 16, 18 | syl2anc 584 | . . 3 ⊢ ((𝑅 ∈ CRing ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → ((𝑋 · 𝑌) ∈ 𝑈 → 𝑌 ∈ 𝑈)) |
20 | 14, 19 | jcad 513 | . 2 ⊢ ((𝑅 ∈ CRing ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → ((𝑋 · 𝑌) ∈ 𝑈 → (𝑋 ∈ 𝑈 ∧ 𝑌 ∈ 𝑈))) |
21 | crngring 19793 | . . . 4 ⊢ (𝑅 ∈ CRing → 𝑅 ∈ Ring) | |
22 | 21 | 3ad2ant1 1132 | . . 3 ⊢ ((𝑅 ∈ CRing ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → 𝑅 ∈ Ring) |
23 | 11, 6 | unitmulcl 19904 | . . . 4 ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝑈 ∧ 𝑌 ∈ 𝑈) → (𝑋 · 𝑌) ∈ 𝑈) |
24 | 23 | 3expib 1121 | . . 3 ⊢ (𝑅 ∈ Ring → ((𝑋 ∈ 𝑈 ∧ 𝑌 ∈ 𝑈) → (𝑋 · 𝑌) ∈ 𝑈)) |
25 | 22, 24 | syl 17 | . 2 ⊢ ((𝑅 ∈ CRing ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → ((𝑋 ∈ 𝑈 ∧ 𝑌 ∈ 𝑈) → (𝑋 · 𝑌) ∈ 𝑈)) |
26 | 20, 25 | impbid 211 | 1 ⊢ ((𝑅 ∈ CRing ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → ((𝑋 · 𝑌) ∈ 𝑈 ↔ (𝑋 ∈ 𝑈 ∧ 𝑌 ∈ 𝑈))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 ∧ w3a 1086 = wceq 1542 ∈ wcel 2110 class class class wbr 5079 ‘cfv 6432 (class class class)co 7271 Basecbs 16910 .rcmulr 16961 Ringcrg 19781 CRingccrg 19782 ∥rcdsr 19878 Unitcui 19879 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1975 ax-7 2015 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2711 ax-rep 5214 ax-sep 5227 ax-nul 5234 ax-pow 5292 ax-pr 5356 ax-un 7582 ax-cnex 10928 ax-resscn 10929 ax-1cn 10930 ax-icn 10931 ax-addcl 10932 ax-addrcl 10933 ax-mulcl 10934 ax-mulrcl 10935 ax-mulcom 10936 ax-addass 10937 ax-mulass 10938 ax-distr 10939 ax-i2m1 10940 ax-1ne0 10941 ax-1rid 10942 ax-rnegex 10943 ax-rrecex 10944 ax-cnre 10945 ax-pre-lttri 10946 ax-pre-lttrn 10947 ax-pre-ltadd 10948 ax-pre-mulgt0 10949 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2072 df-mo 2542 df-eu 2571 df-clab 2718 df-cleq 2732 df-clel 2818 df-nfc 2891 df-ne 2946 df-nel 3052 df-ral 3071 df-rex 3072 df-reu 3073 df-rmo 3074 df-rab 3075 df-v 3433 df-sbc 3721 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-pss 3911 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4846 df-iun 4932 df-br 5080 df-opab 5142 df-mpt 5163 df-tr 5197 df-id 5490 df-eprel 5496 df-po 5504 df-so 5505 df-fr 5545 df-we 5547 df-xp 5596 df-rel 5597 df-cnv 5598 df-co 5599 df-dm 5600 df-rn 5601 df-res 5602 df-ima 5603 df-pred 6201 df-ord 6268 df-on 6269 df-lim 6270 df-suc 6271 df-iota 6390 df-fun 6434 df-fn 6435 df-f 6436 df-f1 6437 df-fo 6438 df-f1o 6439 df-fv 6440 df-riota 7228 df-ov 7274 df-oprab 7275 df-mpo 7276 df-om 7707 df-2nd 7825 df-tpos 8033 df-frecs 8088 df-wrecs 8119 df-recs 8193 df-rdg 8232 df-er 8481 df-en 8717 df-dom 8718 df-sdom 8719 df-pnf 11012 df-mnf 11013 df-xr 11014 df-ltxr 11015 df-le 11016 df-sub 11207 df-neg 11208 df-nn 11974 df-2 12036 df-3 12037 df-sets 16863 df-slot 16881 df-ndx 16893 df-base 16911 df-plusg 16973 df-mulr 16974 df-0g 17150 df-mgm 18324 df-sgrp 18373 df-mnd 18384 df-grp 18578 df-cmn 19386 df-mgp 19719 df-ur 19736 df-ring 19783 df-cring 19784 df-oppr 19860 df-dvdsr 19881 df-unit 19882 |
This theorem is referenced by: dchrelbas3 26384 |
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