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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 20002 | . 2 ⊢ (𝜑 → (𝑃‘𝑋) ∈ ((𝐺 ↾s (𝐺 DProd 𝑆)) GrpHom 𝐺)) |
| 6 | 1, 2 | dprdf2 19946 | . . . 4 ⊢ (𝜑 → 𝑆:𝐼⟶(SubGrp‘𝐺)) |
| 7 | 6, 4 | ffvelcdmd 7060 | . . 3 ⊢ (𝜑 → (𝑆‘𝑋) ∈ (SubGrp‘𝐺)) |
| 8 | 1, 2, 3, 4 | dpjf 19996 | . . . 4 ⊢ (𝜑 → (𝑃‘𝑋):(𝐺 DProd 𝑆)⟶(𝑆‘𝑋)) |
| 9 | 8 | frnd 6699 | . . 3 ⊢ (𝜑 → ran (𝑃‘𝑋) ⊆ (𝑆‘𝑋)) |
| 10 | eqid 2730 | . . . 4 ⊢ (𝐺 ↾s (𝑆‘𝑋)) = (𝐺 ↾s (𝑆‘𝑋)) | |
| 11 | 10 | resghm2b 19173 | . . 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 1540 ∈ wcel 2109 ⊆ wss 3917 class class class wbr 5110 dom cdm 5641 ran crn 5642 ‘cfv 6514 (class class class)co 7390 ↾s cress 17207 SubGrpcsubg 19059 GrpHom cghm 19151 DProd cdprd 19932 dProjcdpj 19933 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-rep 5237 ax-sep 5254 ax-nul 5264 ax-pow 5323 ax-pr 5390 ax-un 7714 ax-cnex 11131 ax-resscn 11132 ax-1cn 11133 ax-icn 11134 ax-addcl 11135 ax-addrcl 11136 ax-mulcl 11137 ax-mulrcl 11138 ax-mulcom 11139 ax-addass 11140 ax-mulass 11141 ax-distr 11142 ax-i2m1 11143 ax-1ne0 11144 ax-1rid 11145 ax-rnegex 11146 ax-rrecex 11147 ax-cnre 11148 ax-pre-lttri 11149 ax-pre-lttrn 11150 ax-pre-ltadd 11151 ax-pre-mulgt0 11152 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-nel 3031 df-ral 3046 df-rex 3055 df-rmo 3356 df-reu 3357 df-rab 3409 df-v 3452 df-sbc 3757 df-csb 3866 df-dif 3920 df-un 3922 df-in 3924 df-ss 3934 df-pss 3937 df-nul 4300 df-if 4492 df-pw 4568 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4875 df-int 4914 df-iun 4960 df-iin 4961 df-br 5111 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5536 df-eprel 5541 df-po 5549 df-so 5550 df-fr 5594 df-se 5595 df-we 5596 df-xp 5647 df-rel 5648 df-cnv 5649 df-co 5650 df-dm 5651 df-rn 5652 df-res 5653 df-ima 5654 df-pred 6277 df-ord 6338 df-on 6339 df-lim 6340 df-suc 6341 df-iota 6467 df-fun 6516 df-fn 6517 df-f 6518 df-f1 6519 df-fo 6520 df-f1o 6521 df-fv 6522 df-isom 6523 df-riota 7347 df-ov 7393 df-oprab 7394 df-mpo 7395 df-of 7656 df-om 7846 df-1st 7971 df-2nd 7972 df-supp 8143 df-tpos 8208 df-frecs 8263 df-wrecs 8294 df-recs 8343 df-rdg 8381 df-1o 8437 df-2o 8438 df-er 8674 df-map 8804 df-ixp 8874 df-en 8922 df-dom 8923 df-sdom 8924 df-fin 8925 df-fsupp 9320 df-oi 9470 df-card 9899 df-pnf 11217 df-mnf 11218 df-xr 11219 df-ltxr 11220 df-le 11221 df-sub 11414 df-neg 11415 df-nn 12194 df-2 12256 df-n0 12450 df-z 12537 df-uz 12801 df-fz 13476 df-fzo 13623 df-seq 13974 df-hash 14303 df-sets 17141 df-slot 17159 df-ndx 17171 df-base 17187 df-ress 17208 df-plusg 17240 df-0g 17411 df-gsum 17412 df-mre 17554 df-mrc 17555 df-acs 17557 df-mgm 18574 df-sgrp 18653 df-mnd 18669 df-mhm 18717 df-submnd 18718 df-grp 18875 df-minusg 18876 df-sbg 18877 df-mulg 19007 df-subg 19062 df-ghm 19152 df-gim 19198 df-cntz 19256 df-oppg 19285 df-lsm 19573 df-pj1 19574 df-cmn 19719 df-dprd 19934 df-dpj 19935 |
| This theorem is referenced by: (None) |
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