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| Mirrors > Home > MPE Home > Th. List > rngcid | Structured version Visualization version GIF version | ||
| Description: The identity arrow in the category of non-unital rings is the identity function. (Contributed by AV, 27-Feb-2020.) (Revised by AV, 10-Mar-2020.) |
| Ref | Expression |
|---|---|
| rngccat.c | ⊢ 𝐶 = (RngCat‘𝑈) |
| rngcid.b | ⊢ 𝐵 = (Base‘𝐶) |
| rngcid.o | ⊢ 1 = (Id‘𝐶) |
| rngcid.u | ⊢ (𝜑 → 𝑈 ∈ 𝑉) |
| rngcid.x | ⊢ (𝜑 → 𝑋 ∈ 𝐵) |
| rngcid.s | ⊢ 𝑆 = (Base‘𝑋) |
| Ref | Expression |
|---|---|
| rngcid | ⊢ (𝜑 → ( 1 ‘𝑋) = ( I ↾ 𝑆)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rngcid.o | . . . 4 ⊢ 1 = (Id‘𝐶) | |
| 2 | rngccat.c | . . . . . 6 ⊢ 𝐶 = (RngCat‘𝑈) | |
| 3 | rngcid.u | . . . . . 6 ⊢ (𝜑 → 𝑈 ∈ 𝑉) | |
| 4 | eqidd 2737 | . . . . . 6 ⊢ (𝜑 → (𝑈 ∩ Rng) = (𝑈 ∩ Rng)) | |
| 5 | eqidd 2737 | . . . . . 6 ⊢ (𝜑 → ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) = ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) | |
| 6 | 2, 3, 4, 5 | rngcval 20593 | . . . . 5 ⊢ (𝜑 → 𝐶 = ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))))) |
| 7 | 6 | fveq2d 6834 | . . . 4 ⊢ (𝜑 → (Id‘𝐶) = (Id‘((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))))) |
| 8 | 1, 7 | eqtrid 2783 | . . 3 ⊢ (𝜑 → 1 = (Id‘((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))))) |
| 9 | 8 | fveq1d 6832 | . 2 ⊢ (𝜑 → ( 1 ‘𝑋) = ((Id‘((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))))‘𝑋)) |
| 10 | eqid 2736 | . . 3 ⊢ ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) = ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) | |
| 11 | eqid 2736 | . . . 4 ⊢ (ExtStrCat‘𝑈) = (ExtStrCat‘𝑈) | |
| 12 | incom 4141 | . . . . 5 ⊢ (𝑈 ∩ Rng) = (Rng ∩ 𝑈) | |
| 13 | 12 | a1i 11 | . . . 4 ⊢ (𝜑 → (𝑈 ∩ Rng) = (Rng ∩ 𝑈)) |
| 14 | 11, 3, 13, 5 | rnghmsubcsetc 20608 | . . 3 ⊢ (𝜑 → ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) ∈ (Subcat‘(ExtStrCat‘𝑈))) |
| 15 | 4, 5 | rnghmresfn 20594 | . . 3 ⊢ (𝜑 → ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) Fn ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) |
| 16 | eqid 2736 | . . 3 ⊢ (Id‘(ExtStrCat‘𝑈)) = (Id‘(ExtStrCat‘𝑈)) | |
| 17 | rngcid.x | . . . 4 ⊢ (𝜑 → 𝑋 ∈ 𝐵) | |
| 18 | rngcid.b | . . . . . 6 ⊢ 𝐵 = (Base‘𝐶) | |
| 19 | 2, 18, 3 | rngcbas 20596 | . . . . 5 ⊢ (𝜑 → 𝐵 = (𝑈 ∩ Rng)) |
| 20 | 19 | eleq2d 2822 | . . . 4 ⊢ (𝜑 → (𝑋 ∈ 𝐵 ↔ 𝑋 ∈ (𝑈 ∩ Rng))) |
| 21 | 17, 20 | mpbid 233 | . . 3 ⊢ (𝜑 → 𝑋 ∈ (𝑈 ∩ Rng)) |
| 22 | 10, 14, 15, 16, 21 | subcid 17808 | . 2 ⊢ (𝜑 → ((Id‘(ExtStrCat‘𝑈))‘𝑋) = ((Id‘((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))))‘𝑋)) |
| 23 | elinel1 4133 | . . . . . 6 ⊢ (𝑋 ∈ (𝑈 ∩ Rng) → 𝑋 ∈ 𝑈) | |
| 24 | 20, 23 | biimtrdi 254 | . . . . 5 ⊢ (𝜑 → (𝑋 ∈ 𝐵 → 𝑋 ∈ 𝑈)) |
| 25 | 17, 24 | mpd 15 | . . . 4 ⊢ (𝜑 → 𝑋 ∈ 𝑈) |
| 26 | 11, 16, 3, 25 | estrcid 18094 | . . 3 ⊢ (𝜑 → ((Id‘(ExtStrCat‘𝑈))‘𝑋) = ( I ↾ (Base‘𝑋))) |
| 27 | rngcid.s | . . . . . 6 ⊢ 𝑆 = (Base‘𝑋) | |
| 28 | 27 | eqcomi 2745 | . . . . 5 ⊢ (Base‘𝑋) = 𝑆 |
| 29 | 28 | a1i 11 | . . . 4 ⊢ (𝜑 → (Base‘𝑋) = 𝑆) |
| 30 | 29 | reseq2d 5934 | . . 3 ⊢ (𝜑 → ( I ↾ (Base‘𝑋)) = ( I ↾ 𝑆)) |
| 31 | 26, 30 | eqtrd 2771 | . 2 ⊢ (𝜑 → ((Id‘(ExtStrCat‘𝑈))‘𝑋) = ( I ↾ 𝑆)) |
| 32 | 9, 22, 31 | 3eqtr2d 2777 | 1 ⊢ (𝜑 → ( 1 ‘𝑋) = ( I ↾ 𝑆)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1543 ∈ wcel 2115 ∩ cin 3885 I cid 5515 × cxp 5619 ↾ cres 5623 ‘cfv 6488 (class class class)co 7359 Basecbs 17173 Idccid 17625 ↾cat cresc 17769 ExtStrCatcestrc 18082 Rngcrng 20127 RngHom crnghm 20408 RngCatcrngc 20591 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1970 ax-7 2011 ax-8 2117 ax-9 2125 ax-10 2148 ax-11 2164 ax-12 2185 ax-ext 2708 ax-rep 5202 ax-sep 5221 ax-nul 5231 ax-pow 5297 ax-pr 5365 ax-un 7681 ax-cnex 11088 ax-resscn 11089 ax-1cn 11090 ax-icn 11091 ax-addcl 11092 ax-addrcl 11093 ax-mulcl 11094 ax-mulrcl 11095 ax-mulcom 11096 ax-addass 11097 ax-mulass 11098 ax-distr 11099 ax-i2m1 11100 ax-1ne0 11101 ax-1rid 11102 ax-rnegex 11103 ax-rrecex 11104 ax-cnre 11105 ax-pre-lttri 11106 ax-pre-lttrn 11107 ax-pre-ltadd 11108 ax-pre-mulgt0 11109 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 850 df-3or 1089 df-3an 1090 df-tru 1546 df-fal 1556 df-ex 1783 df-nf 1787 df-sb 2070 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2932 df-nel 3036 df-ral 3051 df-rex 3061 df-rmo 3341 df-reu 3342 df-rab 3389 df-v 3430 df-sbc 3727 df-csb 3835 df-dif 3889 df-un 3891 df-in 3893 df-ss 3903 df-pss 3906 df-nul 4265 df-if 4458 df-pw 4534 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4842 df-iun 4926 df-br 5076 df-opab 5138 df-mpt 5157 df-tr 5183 df-id 5516 df-eprel 5521 df-po 5529 df-so 5530 df-fr 5574 df-we 5576 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-pred 6255 df-ord 6316 df-on 6317 df-lim 6318 df-suc 6319 df-iota 6444 df-fun 6490 df-fn 6491 df-f 6492 df-f1 6493 df-fo 6494 df-f1o 6495 df-fv 6496 df-riota 7316 df-ov 7362 df-oprab 7363 df-mpo 7364 df-om 7810 df-1st 7934 df-2nd 7935 df-frecs 8224 df-wrecs 8255 df-recs 8304 df-rdg 8342 df-1o 8398 df-er 8636 df-map 8768 df-pm 8769 df-ixp 8839 df-en 8887 df-dom 8888 df-sdom 8889 df-fin 8890 df-pnf 11175 df-mnf 11176 df-xr 11177 df-ltxr 11178 df-le 11179 df-sub 11373 df-neg 11374 df-nn 12169 df-2 12238 df-3 12239 df-4 12240 df-5 12241 df-6 12242 df-7 12243 df-8 12244 df-9 12245 df-n0 12432 df-z 12519 df-dec 12639 df-uz 12783 df-fz 13456 df-struct 17111 df-sets 17128 df-slot 17146 df-ndx 17158 df-base 17174 df-ress 17195 df-plusg 17227 df-hom 17238 df-cco 17239 df-0g 17398 df-cat 17628 df-cid 17629 df-homf 17630 df-ssc 17771 df-resc 17772 df-subc 17773 df-estrc 18083 df-mgm 18602 df-mgmhm 18654 df-sgrp 18681 df-mnd 18697 df-mhm 18745 df-grp 18906 df-ghm 19182 df-abl 19752 df-mgp 20116 df-rng 20128 df-rnghm 20410 df-rngc 20592 |
| This theorem is referenced by: rngcsect 20611 rhmsubcrngclem1 20641 rhmsubclem3 20662 |
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