| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 2762 | . . . 4 ⊢ (1r‘𝑅) = (1r‘𝑅) | |
| 3 | eqid 2762 | . . . 4 ⊢ (∥r‘𝑅) = (∥r‘𝑅) | |
| 4 | eqid 2762 | . . . 4 ⊢ (oppr‘𝑅) = (oppr‘𝑅) | |
| 5 | eqid 2762 | . . . 4 ⊢ (∥r‘(oppr‘𝑅)) = (∥r‘(oppr‘𝑅)) | |
| 6 | 1, 2, 3, 4, 5 | isunit 20515 | . . 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 20507 | . 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 5107 ‘cfv 6537 Basecbs 17305 1rcur 20321 opprcoppr 20478 ∥rcdsr 20496 Unitcui 20497 |
| 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 2215 ax-ext 2734 ax-rep 5236 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7739 |
| 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 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-id 5554 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-iota 6493 df-fun 6539 df-fv 6545 df-ov 7419 df-dvdsr 20499 df-unit 20500 |
| This theorem is used by: unitss 20518 unitmulcl 20522 unitgrp 20525 ringinvcl 20534 unitnegcl 20539 ringunitnzdiv 20540 unitdvcl 20547 dvrid 20548 dvrcan1 20551 dvrcan3 20552 dvreq1 20553 irredrmul 20569 subrguss 20750 subrginv 20751 subrgunit 20753 unitrrg 20866 isdrng4 20903 isdrng2 20907 gzrngunitlem 21646 gzrngunit 21647 zringunit 21680 matinv 22900 cramerimp 22912 unitnmn0 24895 nminvr 24896 nrginvrcnlem 24918 ig1peu 26402 dchrelbas3 27472 dchrmulcl 27483 kerunit 33752 dvdsruasso2 33806 unitmulrprm 33925 1arithidomlem1 33932 1arithidomlem2 33933 1arithidom 33934 ply1unit 33972 m1pmeq 33982 fldhmf1 42943 invginvrid 49284 lincresunit3lem3 49391 lincresunit3lem1 49396 |
| Copyright terms: Public domain | W3C validator |