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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 14357 | . . 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 13794 | . . 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 14315 | . 2 ⊢ (𝑅 ∈ Ring → 1 = (0g‘(mulGrp‘𝑅))) |
| 9 | ringidcl.b | . . 3 ⊢ 𝐵 = (Base‘𝑅) | |
| 10 | 1, 9 | mgpbasg 14275 | . 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 13403 0gc0g 13661 Mndcmnd 13780 mulGrpcmgp 14268 1rcur 14313 Ringcrg 14351 |
| 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 8271 ax-resscn 8272 ax-1cn 8273 ax-1re 8274 ax-icn 8275 ax-addcl 8276 ax-addrcl 8277 ax-mulcl 8278 ax-addcom 8280 ax-addass 8282 ax-i2m1 8285 ax-0lt1 8286 ax-0id 8288 ax-rnegex 8289 ax-pre-ltirr 8292 ax-pre-ltadd 8296 |
| 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 8363 df-mnf 8364 df-ltxr 8366 df-inn 9308 df-2 9366 df-3 9367 df-ndx 13406 df-slot 13407 df-base 13409 df-sets 13410 df-plusg 13495 df-mulr 13496 df-0g 13663 df-mgm 13727 df-sgrp 13768 df-mnd 13781 df-mgp 14269 df-ur 14314 df-ring 14353 |
| This theorem is used by: ringid 14382 ringo2times 14384 ringcom 14387 ringnegl 14407 ringnegr 14408 ringmneg1 14409 ringmneg2 14410 ringressid 14419 imasring 14420 opprring 14435 opprringb 14437 dvdsrid 14458 dvdsrneg 14461 1unit 14465 ringinvdv 14503 elrhmunit 14535 isnzr2 14542 subrgid 14582 rrgnz 14628 aprlring 14651 lmod1cl 14703 lmodvsneg 14719 lmodsubvs 14731 lmodsubdi 14732 lmodsubdir 14733 lmodprop2d 14736 rmodislmod 14739 lssvnegcl 14764 mulgrhm 14995 zrhmulg 15006 asclvald 15073 asclfnd 15074 asclf 15075 asclghm 15076 ascl0 15078 ascl1 15079 asclmul1 15080 asclmul2 15081 ascldimul 15082 rnascl 15085 assamulgscmlem1 15092 asclmulg 15095 psr1clfi 15131 |
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