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| Mirrors > Home > MPE Home > Th. List > unitcl | Structured version Visualization version GIF version | ||
| Description: A unit is an element of the base set. (Contributed by Mario Carneiro, 1-Dec-2014.) |
| Ref | Expression |
|---|---|
| unitcl.1 | ⊢ 𝐵 = (Base‘𝑅) |
| unitcl.2 | ⊢ 𝑈 = (Unit‘𝑅) |
| Ref | Expression |
|---|---|
| unitcl | ⊢ (𝑋 ∈ 𝑈 → 𝑋 ∈ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | unitcl.2 | . . . 4 ⊢ 𝑈 = (Unit‘𝑅) | |
| 2 | eqid 2760 | . . . 4 ⊢ (1r‘𝑅) = (1r‘𝑅) | |
| 3 | eqid 2760 | . . . 4 ⊢ (∥r‘𝑅) = (∥r‘𝑅) | |
| 4 | eqid 2760 | . . . 4 ⊢ (oppr‘𝑅) = (oppr‘𝑅) | |
| 5 | eqid 2760 | . . . 4 ⊢ (∥r‘(oppr‘𝑅)) = (∥r‘(oppr‘𝑅)) | |
| 6 | 1, 2, 3, 4, 5 | isunit 20603 | . . 3 ⊢ (𝑋 ∈ 𝑈 ↔ (𝑋(∥r‘𝑅)(1r‘𝑅) ∧ 𝑋(∥r‘(oppr‘𝑅))(1r‘𝑅))) |
| 7 | 6 | simplbi 502 | . 2 ⊢ (𝑋 ∈ 𝑈 → 𝑋(∥r‘𝑅)(1r‘𝑅)) |
| 8 | unitcl.1 | . . 3 ⊢ 𝐵 = (Base‘𝑅) | |
| 9 | 8, 3 | dvdsrcl 20595 | . 2 ⊢ (𝑋(∥r‘𝑅)(1r‘𝑅) → 𝑋 ∈ 𝐵) |
| 10 | 7, 9 | syl 18 | 1 ⊢ (𝑋 ∈ 𝑈 → 𝑋 ∈ 𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 ∈ wcel 2144 class class class wbr 5102 ‘cfv 6538 Basecbs 17387 1rcur 20407 opprcoppr 20566 ∥rcdsr 20584 Unitcui 20585 |
| 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 5326 ax-pr 5390 ax-un 7751 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 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-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5545 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-iota 6494 df-fun 6540 df-fv 6546 df-ov 7423 df-dvdsr 20587 df-unit 20588 |
| This theorem is used by: unitss 20606 unitmulcl 20610 unitgrp 20613 ringinvcl 20622 unitnegcl 20627 ringunitnzdiv 20628 unitdvcl 20635 dvrid 20636 dvrcan1 20639 dvrcan3 20640 dvreq1 20641 irredrmul 20657 subrguss 20839 subrginv 20840 subrgunit 20842 unitrrg 20955 isdrng4 20992 isdrng2 20997 gzrngunitlem 21738 gzrngunit 21739 zringunit 21772 matinv 22992 cramerimp 23004 unitnmn0 24987 nminvr 24988 nrginvrcnlem 25010 ig1peu 26493 dchrelbas3 27565 dchrmulcl 27576 kerunit 33928 dvdsruasso2 33983 unitmulrprm 34102 1arithidomlem1 34109 1arithidomlem2 34110 1arithidom 34111 ply1unit 34149 m1pmeq 34159 fldhmf1 43183 invginvrid 49522 lincresunit3lem3 49629 lincresunit3lem1 49634 |
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