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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 14414 | . . 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 13803 | . . 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 14372 | . 2 ⊢ (𝑅 ∈ Ring → 1 = (0g‘(mulGrp‘𝑅))) |
| 9 | ringidcl.b | . . 3 ⊢ 𝐵 = (Base‘𝑅) | |
| 10 | 1, 9 | mgpbasg 14332 | . 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 5380 Basecbs 13411 0gc0g 13670 Mndcmnd 13789 mulGrpcmgp 14325 1rcur 14370 Ringcrg 14408 |
| 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 4251 ax-pow 4313 ax-pr 4348 ax-un 4580 ax-setind 4686 ax-cnex 8277 ax-resscn 8278 ax-1cn 8279 ax-1re 8280 ax-icn 8281 ax-addcl 8282 ax-addrcl 8283 ax-mulcl 8284 ax-addcom 8286 ax-addass 8288 ax-i2m1 8291 ax-0lt1 8292 ax-0id 8294 ax-rnegex 8295 ax-pre-ltirr 8298 ax-pre-ltadd 8302 |
| 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 4132 df-opab 4194 df-mpt 4195 df-id 4440 df-xp 4782 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-rn 4787 df-res 4788 df-ima 4789 df-iota 5340 df-fun 5382 df-fn 5383 df-fv 5388 df-riota 6041 df-ov 6091 df-oprab 6092 df-mpo 6093 df-pnf 8369 df-mnf 8370 df-ltxr 8372 df-inn 9315 df-2 9373 df-3 9374 df-ndx 13414 df-slot 13415 df-base 13417 df-sets 13418 df-plusg 13504 df-mulr 13505 df-0g 13672 df-mgm 13736 df-sgrp 13777 df-mnd 13790 df-mgp 14326 df-ur 14371 df-ring 14410 |
| This theorem is used by: ringid 14439 ringo2times 14441 ringcom 14444 ringnegl 14464 ringnegr 14465 ringmneg1 14466 ringmneg2 14467 ringressid 14478 imasring 14479 opprring 14494 opprringb 14496 dvdsrid 14517 dvdsrneg 14520 1unit 14524 ringinvdv 14562 elrhmunit 14594 isnzr2 14601 subrgid 14641 rrgnz 14687 aprlring 14710 lmod1cl 14762 lmodvsneg 14778 lmodsubvs 14790 lmodsubdi 14791 lmodsubdir 14792 lmodprop2d 14795 rmodislmod 14798 lssvnegcl 14823 mulgrhm 15054 zrhmulg 15065 asclvald 15132 asclfnd 15133 asclf 15134 asclghm 15135 ascl0 15137 ascl1 15138 asclmul1 15139 asclmul2 15140 ascldimul 15141 rnascl 15144 assamulgscmlem1 15151 asclmulg 15154 psr1clfi 15203 psrridmfi 15205 mvrffi 15214 |
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