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| Mirrors > Home > MPE Home > Th. List > dpjghm2 | Structured version Visualization version GIF version | ||
| Description: The direct product is the binary subgroup product ("sum") of the direct products of the partition. (Contributed by Mario Carneiro, 26-Apr-2016.) |
| Ref | Expression |
|---|---|
| dpjfval.1 | ⊢ (𝜑 → 𝐺dom DProd 𝑆) |
| dpjfval.2 | ⊢ (𝜑 → dom 𝑆 = 𝐼) |
| dpjfval.p | ⊢ 𝑃 = (𝐺dProj𝑆) |
| dpjlid.3 | ⊢ (𝜑 → 𝑋 ∈ 𝐼) |
| Ref | Expression |
|---|---|
| dpjghm2 | ⊢ (𝜑 → (𝑃‘𝑋) ∈ ((𝐺 ↾s (𝐺 DProd 𝑆)) GrpHom (𝐺 ↾s (𝑆‘𝑋)))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dpjfval.1 | . . 3 ⊢ (𝜑 → 𝐺dom DProd 𝑆) | |
| 2 | dpjfval.2 | . . 3 ⊢ (𝜑 → dom 𝑆 = 𝐼) | |
| 3 | dpjfval.p | . . 3 ⊢ 𝑃 = (𝐺dProj𝑆) | |
| 4 | dpjlid.3 | . . 3 ⊢ (𝜑 → 𝑋 ∈ 𝐼) | |
| 5 | 1, 2, 3, 4 | dpjghm 19979 | . 2 ⊢ (𝜑 → (𝑃‘𝑋) ∈ ((𝐺 ↾s (𝐺 DProd 𝑆)) GrpHom 𝐺)) |
| 6 | 1, 2 | dprdf2 19923 | . . . 4 ⊢ (𝜑 → 𝑆:𝐼⟶(SubGrp‘𝐺)) |
| 7 | 6, 4 | ffvelcdmd 7024 | . . 3 ⊢ (𝜑 → (𝑆‘𝑋) ∈ (SubGrp‘𝐺)) |
| 8 | 1, 2, 3, 4 | dpjf 19973 | . . . 4 ⊢ (𝜑 → (𝑃‘𝑋):(𝐺 DProd 𝑆)⟶(𝑆‘𝑋)) |
| 9 | 8 | frnd 6664 | . . 3 ⊢ (𝜑 → ran (𝑃‘𝑋) ⊆ (𝑆‘𝑋)) |
| 10 | eqid 2733 | . . . 4 ⊢ (𝐺 ↾s (𝑆‘𝑋)) = (𝐺 ↾s (𝑆‘𝑋)) | |
| 11 | 10 | resghm2b 19148 | . . 3 ⊢ (((𝑆‘𝑋) ∈ (SubGrp‘𝐺) ∧ ran (𝑃‘𝑋) ⊆ (𝑆‘𝑋)) → ((𝑃‘𝑋) ∈ ((𝐺 ↾s (𝐺 DProd 𝑆)) GrpHom 𝐺) ↔ (𝑃‘𝑋) ∈ ((𝐺 ↾s (𝐺 DProd 𝑆)) GrpHom (𝐺 ↾s (𝑆‘𝑋))))) |
| 12 | 7, 9, 11 | syl2anc 584 | . 2 ⊢ (𝜑 → ((𝑃‘𝑋) ∈ ((𝐺 ↾s (𝐺 DProd 𝑆)) GrpHom 𝐺) ↔ (𝑃‘𝑋) ∈ ((𝐺 ↾s (𝐺 DProd 𝑆)) GrpHom (𝐺 ↾s (𝑆‘𝑋))))) |
| 13 | 5, 12 | mpbid 232 | 1 ⊢ (𝜑 → (𝑃‘𝑋) ∈ ((𝐺 ↾s (𝐺 DProd 𝑆)) GrpHom (𝐺 ↾s (𝑆‘𝑋)))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 = wceq 1541 ∈ wcel 2113 ⊆ wss 3898 class class class wbr 5093 dom cdm 5619 ran crn 5620 ‘cfv 6486 (class class class)co 7352 ↾s cress 17143 SubGrpcsubg 19035 GrpHom cghm 19126 DProd cdprd 19909 dProjcdpj 19910 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2705 ax-rep 5219 ax-sep 5236 ax-nul 5246 ax-pow 5305 ax-pr 5372 ax-un 7674 ax-cnex 11069 ax-resscn 11070 ax-1cn 11071 ax-icn 11072 ax-addcl 11073 ax-addrcl 11074 ax-mulcl 11075 ax-mulrcl 11076 ax-mulcom 11077 ax-addass 11078 ax-mulass 11079 ax-distr 11080 ax-i2m1 11081 ax-1ne0 11082 ax-1rid 11083 ax-rnegex 11084 ax-rrecex 11085 ax-cnre 11086 ax-pre-lttri 11087 ax-pre-lttrn 11088 ax-pre-ltadd 11089 ax-pre-mulgt0 11090 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2725 df-clel 2808 df-nfc 2882 df-ne 2930 df-nel 3034 df-ral 3049 df-rex 3058 df-rmo 3347 df-reu 3348 df-rab 3397 df-v 3439 df-sbc 3738 df-csb 3847 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3918 df-nul 4283 df-if 4475 df-pw 4551 df-sn 4576 df-pr 4578 df-op 4582 df-uni 4859 df-int 4898 df-iun 4943 df-iin 4944 df-br 5094 df-opab 5156 df-mpt 5175 df-tr 5201 df-id 5514 df-eprel 5519 df-po 5527 df-so 5528 df-fr 5572 df-se 5573 df-we 5574 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-pred 6253 df-ord 6314 df-on 6315 df-lim 6316 df-suc 6317 df-iota 6442 df-fun 6488 df-fn 6489 df-f 6490 df-f1 6491 df-fo 6492 df-f1o 6493 df-fv 6494 df-isom 6495 df-riota 7309 df-ov 7355 df-oprab 7356 df-mpo 7357 df-of 7616 df-om 7803 df-1st 7927 df-2nd 7928 df-supp 8097 df-tpos 8162 df-frecs 8217 df-wrecs 8248 df-recs 8297 df-rdg 8335 df-1o 8391 df-2o 8392 df-er 8628 df-map 8758 df-ixp 8828 df-en 8876 df-dom 8877 df-sdom 8878 df-fin 8879 df-fsupp 9253 df-oi 9403 df-card 9839 df-pnf 11155 df-mnf 11156 df-xr 11157 df-ltxr 11158 df-le 11159 df-sub 11353 df-neg 11354 df-nn 12133 df-2 12195 df-n0 12389 df-z 12476 df-uz 12739 df-fz 13410 df-fzo 13557 df-seq 13911 df-hash 14240 df-sets 17077 df-slot 17095 df-ndx 17107 df-base 17123 df-ress 17144 df-plusg 17176 df-0g 17347 df-gsum 17348 df-mre 17490 df-mrc 17491 df-acs 17493 df-mgm 18550 df-sgrp 18629 df-mnd 18645 df-mhm 18693 df-submnd 18694 df-grp 18851 df-minusg 18852 df-sbg 18853 df-mulg 18983 df-subg 19038 df-ghm 19127 df-gim 19173 df-cntz 19231 df-oppg 19260 df-lsm 19550 df-pj1 19551 df-cmn 19696 df-dprd 19911 df-dpj 19912 |
| This theorem is referenced by: (None) |
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