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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 20564 | . . 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 20556 | . 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 1570 ∈ wcel 2145 class class class wbr 5102 ‘cfv 6527 Basecbs 17348 1rcur 20368 opprcoppr 20527 ∥rcdsr 20545 Unitcui 20546 |
| 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 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7734 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 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-dif 3901 df-un 3903 df-in 3905 df-ss 3915 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 5542 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-iota 6483 df-fun 6529 df-fv 6535 df-ov 7411 df-dvdsr 20548 df-unit 20549 |
| This theorem is used by: unitss 20567 unitmulcl 20571 unitgrp 20574 ringinvcl 20583 unitnegcl 20588 ringunitnzdiv 20589 unitdvcl 20596 dvrid 20597 dvrcan1 20600 dvrcan3 20601 dvreq1 20602 irredrmul 20618 subrguss 20800 subrginv 20801 subrgunit 20803 unitrrg 20916 isdrng4 20953 isdrng2 20958 gzrngunitlem 21699 gzrngunit 21700 zringunit 21733 matinv 22953 cramerimp 22965 unitnmn0 24948 nminvr 24949 nrginvrcnlem 24971 ig1peu 26454 dchrelbas3 27528 dchrmulcl 27539 kerunit 33819 dvdsruasso2 33874 unitmulrprm 33993 1arithidomlem1 34000 1arithidomlem2 34001 1arithidom 34002 ply1unit 34040 m1pmeq 34050 fldhmf1 43060 invginvrid 49401 lincresunit3lem3 49508 lincresunit3lem1 49513 |
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