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| Mirrors > Home > ILE Home > Th. List > ringidcl | GIF version | ||
| Description: The unity element of a ring belongs to the base set of the ring. (Contributed by NM, 27-Aug-2011.) (Revised by Mario Carneiro, 27-Dec-2014.) |
| Ref | Expression |
|---|---|
| ringidcl.b | ⊢ 𝐵 = (Base‘𝑅) |
| ringidcl.u | ⊢ 1 = (1r‘𝑅) |
| Ref | Expression |
|---|---|
| ringidcl | ⊢ (𝑅 ∈ Ring → 1 ∈ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2238 | . . . 4 ⊢ (mulGrp‘𝑅) = (mulGrp‘𝑅) | |
| 2 | 1 | ringmgp 14308 | . . 3 ⊢ (𝑅 ∈ Ring → (mulGrp‘𝑅) ∈ Mnd) |
| 3 | eqid 2238 | . . . 4 ⊢ (Base‘(mulGrp‘𝑅)) = (Base‘(mulGrp‘𝑅)) | |
| 4 | eqid 2238 | . . . 4 ⊢ (0g‘(mulGrp‘𝑅)) = (0g‘(mulGrp‘𝑅)) | |
| 5 | 3, 4 | mndidcl 13745 | . . 3 ⊢ ((mulGrp‘𝑅) ∈ Mnd → (0g‘(mulGrp‘𝑅)) ∈ (Base‘(mulGrp‘𝑅))) |
| 6 | 2, 5 | syl 14 | . 2 ⊢ (𝑅 ∈ Ring → (0g‘(mulGrp‘𝑅)) ∈ (Base‘(mulGrp‘𝑅))) |
| 7 | ringidcl.u | . . 3 ⊢ 1 = (1r‘𝑅) | |
| 8 | 1, 7 | ringidvalg 14266 | . 2 ⊢ (𝑅 ∈ Ring → 1 = (0g‘(mulGrp‘𝑅))) |
| 9 | ringidcl.b | . . 3 ⊢ 𝐵 = (Base‘𝑅) | |
| 10 | 1, 9 | mgpbasg 14226 | . 2 ⊢ (𝑅 ∈ Ring → 𝐵 = (Base‘(mulGrp‘𝑅))) |
| 11 | 6, 8, 10 | 3eltr4d 2322 | 1 ⊢ (𝑅 ∈ Ring → 1 ∈ 𝐵) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 = wceq 1402 ∈ wcel 2209 ‘cfv 5377 Basecbs 13354 0gc0g 13612 Mndcmnd 13731 mulGrpcmgp 14219 1rcur 14264 Ringcrg 14302 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4249 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-setind 4684 ax-cnex 8270 ax-resscn 8271 ax-1cn 8272 ax-1re 8273 ax-icn 8274 ax-addcl 8275 ax-addrcl 8276 ax-mulcl 8277 ax-addcom 8279 ax-addass 8281 ax-i2m1 8284 ax-0lt1 8285 ax-0id 8287 ax-rnegex 8288 ax-pre-ltirr 8291 ax-pre-ltadd 8295 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-reu 2535 df-rmo 2536 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-br 4131 df-opab 4193 df-mpt 4194 df-id 4438 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-rn 4785 df-res 4786 df-ima 4787 df-iota 5337 df-fun 5379 df-fn 5380 df-fv 5385 df-riota 6038 df-ov 6088 df-oprab 6089 df-mpo 6090 df-pnf 8362 df-mnf 8363 df-ltxr 8365 df-inn 9306 df-2 9364 df-3 9365 df-ndx 13357 df-slot 13358 df-base 13360 df-sets 13361 df-plusg 13446 df-mulr 13447 df-0g 13614 df-mgm 13678 df-sgrp 13719 df-mnd 13732 df-mgp 14220 df-ur 14265 df-ring 14304 |
| This theorem is used by: ringid 14333 ringo2times 14335 ringcom 14338 ringnegl 14358 ringnegr 14359 ringmneg1 14360 ringmneg2 14361 ringressid 14370 imasring 14371 opprring 14386 opprringb 14388 dvdsrid 14409 dvdsrneg 14412 1unit 14416 ringinvdv 14454 elrhmunit 14486 isnzr2 14493 subrgid 14533 rrgnz 14579 aprlring 14602 lmod1cl 14654 lmodvsneg 14670 lmodsubvs 14682 lmodsubdi 14683 lmodsubdir 14684 lmodprop2d 14687 rmodislmod 14690 lssvnegcl 14715 mulgrhm 14946 zrhmulg 14957 asclvald 15024 asclfnd 15025 asclf 15026 asclghm 15027 ascl0 15029 ascl1 15030 asclmul1 15031 asclmul2 15032 ascldimul 15033 rnascl 15036 assamulgscmlem1 15043 asclmulg 15046 psr1clfi 15081 |
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