Mathbox for Alexander van der Vekens |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > Mathboxes > rnghmco | Structured version Visualization version GIF version |
Description: The composition of non-unital ring homomorphisms is a homomorphism. (Contributed by AV, 27-Feb-2020.) |
Ref | Expression |
---|---|
rnghmco | ⊢ ((𝐹 ∈ (𝑇 RngHomo 𝑈) ∧ 𝐺 ∈ (𝑆 RngHomo 𝑇)) → (𝐹 ∘ 𝐺) ∈ (𝑆 RngHomo 𝑈)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rnghmrcl 45399 | . . . 4 ⊢ (𝐹 ∈ (𝑇 RngHomo 𝑈) → (𝑇 ∈ Rng ∧ 𝑈 ∈ Rng)) | |
2 | 1 | simprd 495 | . . 3 ⊢ (𝐹 ∈ (𝑇 RngHomo 𝑈) → 𝑈 ∈ Rng) |
3 | rnghmrcl 45399 | . . . 4 ⊢ (𝐺 ∈ (𝑆 RngHomo 𝑇) → (𝑆 ∈ Rng ∧ 𝑇 ∈ Rng)) | |
4 | 3 | simpld 494 | . . 3 ⊢ (𝐺 ∈ (𝑆 RngHomo 𝑇) → 𝑆 ∈ Rng) |
5 | 2, 4 | anim12ci 613 | . 2 ⊢ ((𝐹 ∈ (𝑇 RngHomo 𝑈) ∧ 𝐺 ∈ (𝑆 RngHomo 𝑇)) → (𝑆 ∈ Rng ∧ 𝑈 ∈ Rng)) |
6 | rnghmghm 45408 | . . . 4 ⊢ (𝐹 ∈ (𝑇 RngHomo 𝑈) → 𝐹 ∈ (𝑇 GrpHom 𝑈)) | |
7 | rnghmghm 45408 | . . . 4 ⊢ (𝐺 ∈ (𝑆 RngHomo 𝑇) → 𝐺 ∈ (𝑆 GrpHom 𝑇)) | |
8 | ghmco 18835 | . . . 4 ⊢ ((𝐹 ∈ (𝑇 GrpHom 𝑈) ∧ 𝐺 ∈ (𝑆 GrpHom 𝑇)) → (𝐹 ∘ 𝐺) ∈ (𝑆 GrpHom 𝑈)) | |
9 | 6, 7, 8 | syl2an 595 | . . 3 ⊢ ((𝐹 ∈ (𝑇 RngHomo 𝑈) ∧ 𝐺 ∈ (𝑆 RngHomo 𝑇)) → (𝐹 ∘ 𝐺) ∈ (𝑆 GrpHom 𝑈)) |
10 | eqid 2739 | . . . . 5 ⊢ (mulGrp‘𝑇) = (mulGrp‘𝑇) | |
11 | eqid 2739 | . . . . 5 ⊢ (mulGrp‘𝑈) = (mulGrp‘𝑈) | |
12 | 10, 11 | rnghmmgmhm 45404 | . . . 4 ⊢ (𝐹 ∈ (𝑇 RngHomo 𝑈) → 𝐹 ∈ ((mulGrp‘𝑇) MgmHom (mulGrp‘𝑈))) |
13 | eqid 2739 | . . . . 5 ⊢ (mulGrp‘𝑆) = (mulGrp‘𝑆) | |
14 | 13, 10 | rnghmmgmhm 45404 | . . . 4 ⊢ (𝐺 ∈ (𝑆 RngHomo 𝑇) → 𝐺 ∈ ((mulGrp‘𝑆) MgmHom (mulGrp‘𝑇))) |
15 | mgmhmco 45307 | . . . 4 ⊢ ((𝐹 ∈ ((mulGrp‘𝑇) MgmHom (mulGrp‘𝑈)) ∧ 𝐺 ∈ ((mulGrp‘𝑆) MgmHom (mulGrp‘𝑇))) → (𝐹 ∘ 𝐺) ∈ ((mulGrp‘𝑆) MgmHom (mulGrp‘𝑈))) | |
16 | 12, 14, 15 | syl2an 595 | . . 3 ⊢ ((𝐹 ∈ (𝑇 RngHomo 𝑈) ∧ 𝐺 ∈ (𝑆 RngHomo 𝑇)) → (𝐹 ∘ 𝐺) ∈ ((mulGrp‘𝑆) MgmHom (mulGrp‘𝑈))) |
17 | 9, 16 | jca 511 | . 2 ⊢ ((𝐹 ∈ (𝑇 RngHomo 𝑈) ∧ 𝐺 ∈ (𝑆 RngHomo 𝑇)) → ((𝐹 ∘ 𝐺) ∈ (𝑆 GrpHom 𝑈) ∧ (𝐹 ∘ 𝐺) ∈ ((mulGrp‘𝑆) MgmHom (mulGrp‘𝑈)))) |
18 | 13, 11 | isrnghmmul 45403 | . 2 ⊢ ((𝐹 ∘ 𝐺) ∈ (𝑆 RngHomo 𝑈) ↔ ((𝑆 ∈ Rng ∧ 𝑈 ∈ Rng) ∧ ((𝐹 ∘ 𝐺) ∈ (𝑆 GrpHom 𝑈) ∧ (𝐹 ∘ 𝐺) ∈ ((mulGrp‘𝑆) MgmHom (mulGrp‘𝑈))))) |
19 | 5, 17, 18 | sylanbrc 582 | 1 ⊢ ((𝐹 ∈ (𝑇 RngHomo 𝑈) ∧ 𝐺 ∈ (𝑆 RngHomo 𝑇)) → (𝐹 ∘ 𝐺) ∈ (𝑆 RngHomo 𝑈)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 ∈ wcel 2109 ∘ ccom 5592 ‘cfv 6430 (class class class)co 7268 GrpHom cghm 18812 mulGrpcmgp 19701 MgmHom cmgmhm 45283 Rngcrng 45384 RngHomo crngh 45395 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1801 ax-4 1815 ax-5 1916 ax-6 1974 ax-7 2014 ax-8 2111 ax-9 2119 ax-10 2140 ax-11 2157 ax-12 2174 ax-ext 2710 ax-rep 5213 ax-sep 5226 ax-nul 5233 ax-pow 5291 ax-pr 5355 ax-un 7579 ax-cnex 10911 ax-resscn 10912 ax-1cn 10913 ax-icn 10914 ax-addcl 10915 ax-addrcl 10916 ax-mulcl 10917 ax-mulrcl 10918 ax-mulcom 10919 ax-addass 10920 ax-mulass 10921 ax-distr 10922 ax-i2m1 10923 ax-1ne0 10924 ax-1rid 10925 ax-rnegex 10926 ax-rrecex 10927 ax-cnre 10928 ax-pre-lttri 10929 ax-pre-lttrn 10930 ax-pre-ltadd 10931 ax-pre-mulgt0 10932 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1544 df-fal 1554 df-ex 1786 df-nf 1790 df-sb 2071 df-mo 2541 df-eu 2570 df-clab 2717 df-cleq 2731 df-clel 2817 df-nfc 2890 df-ne 2945 df-nel 3051 df-ral 3070 df-rex 3071 df-reu 3072 df-rmo 3073 df-rab 3074 df-v 3432 df-sbc 3720 df-csb 3837 df-dif 3894 df-un 3896 df-in 3898 df-ss 3908 df-pss 3910 df-nul 4262 df-if 4465 df-pw 4540 df-sn 4567 df-pr 4569 df-tp 4571 df-op 4573 df-uni 4845 df-iun 4931 df-br 5079 df-opab 5141 df-mpt 5162 df-tr 5196 df-id 5488 df-eprel 5494 df-po 5502 df-so 5503 df-fr 5543 df-we 5545 df-xp 5594 df-rel 5595 df-cnv 5596 df-co 5597 df-dm 5598 df-rn 5599 df-res 5600 df-ima 5601 df-pred 6199 df-ord 6266 df-on 6267 df-lim 6268 df-suc 6269 df-iota 6388 df-fun 6432 df-fn 6433 df-f 6434 df-f1 6435 df-fo 6436 df-f1o 6437 df-fv 6438 df-riota 7225 df-ov 7271 df-oprab 7272 df-mpo 7273 df-om 7701 df-2nd 7818 df-frecs 8081 df-wrecs 8112 df-recs 8186 df-rdg 8225 df-er 8472 df-map 8591 df-en 8708 df-dom 8709 df-sdom 8710 df-pnf 10995 df-mnf 10996 df-xr 10997 df-ltxr 10998 df-le 10999 df-sub 11190 df-neg 11191 df-nn 11957 df-2 12019 df-sets 16846 df-slot 16864 df-ndx 16876 df-base 16894 df-plusg 16956 df-0g 17133 df-mgm 18307 df-sgrp 18356 df-mnd 18367 df-mhm 18411 df-grp 18561 df-ghm 18813 df-abl 19370 df-mgp 19702 df-mgmhm 45285 df-rng0 45385 df-rnghomo 45397 |
This theorem is referenced by: rnghmsubcsetclem2 45486 rngccatidALTV 45499 |
Copyright terms: Public domain | W3C validator |