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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 20166 | . 2 ⊢ (𝜑 → (𝑃‘𝑋) ∈ ((𝐺 ↾s (𝐺 DProd 𝑆)) GrpHom 𝐺)) |
| 6 | 1, 2 | dprdf2 20110 | . . . 4 ⊢ (𝜑 → 𝑆:𝐼⟶(SubGrp‘𝐺)) |
| 7 | 6, 4 | ffvelcdmd 7087 | . . 3 ⊢ (𝜑 → (𝑆‘𝑋) ∈ (SubGrp‘𝐺)) |
| 8 | 1, 2, 3, 4 | dpjf 20160 | . . . 4 ⊢ (𝜑 → (𝑃‘𝑋):(𝐺 DProd 𝑆)⟶(𝑆‘𝑋)) |
| 9 | 8 | frnd 6721 | . . 3 ⊢ (𝜑 → ran (𝑃‘𝑋) ⊆ (𝑆‘𝑋)) |
| 10 | eqid 2766 | . . . 4 ⊢ (𝐺 ↾s (𝑆‘𝑋)) = (𝐺 ↾s (𝑆‘𝑋)) | |
| 11 | 10 | resghm2b 19335 | . . 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 596 | . 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 235 | 1 ⊢ (𝜑 → (𝑃‘𝑋) ∈ ((𝐺 ↾s (𝐺 DProd 𝑆)) GrpHom (𝐺 ↾s (𝑆‘𝑋)))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 = wceq 1570 ∈ wcel 2146 ⊆ wss 3908 class class class wbr 5114 dom cdm 5666 ran crn 5667 ‘cfv 6543 (class class class)co 7423 ↾s cress 17315 SubGrpcsubg 19217 GrpHom cghm 19314 DProd cdprd 20096 dProjcdpj 20097 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-rep 5243 ax-sep 5262 ax-nul 5274 ax-pow 5341 ax-pr 5409 ax-un 7745 ax-cnex 11174 ax-resscn 11175 ax-1cn 11176 ax-icn 11177 ax-addcl 11178 ax-addrcl 11179 ax-mulcl 11180 ax-mulrcl 11181 ax-mulcom 11182 ax-addass 11183 ax-mulass 11184 ax-distr 11185 ax-i2m1 11186 ax-1ne0 11187 ax-1rid 11188 ax-rnegex 11189 ax-rrecex 11190 ax-cnre 11191 ax-pre-lttri 11192 ax-pre-lttrn 11193 ax-pre-ltadd 11194 ax-pre-mulgt0 11195 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-nel 3068 df-ral 3083 df-rex 3093 df-rmo 3372 df-reu 3373 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-pss 3928 df-nul 4290 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-int 4918 df-iun 4963 df-iin 4964 df-br 5115 df-opab 5179 df-mpt 5198 df-tr 5224 df-id 5561 df-eprel 5566 df-po 5574 df-so 5575 df-fr 5619 df-se 5620 df-we 5621 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-pred 6309 df-ord 6370 df-on 6371 df-lim 6372 df-suc 6373 df-iota 6499 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-isom 6552 df-riota 7380 df-ov 7426 df-oprab 7427 df-mpo 7428 df-of 7687 df-om 7872 df-1st 7995 df-2nd 7996 df-supp 8166 df-tpos 8231 df-frecs 8287 df-wrecs 8318 df-recs 8367 df-rdg 8406 df-1o 8462 df-2o 8463 df-er 8703 df-map 8835 df-ixp 8905 df-en 8953 df-dom 8954 df-sdom 8955 df-fin 8956 df-fsupp 9332 df-oi 9482 df-card 9944 df-pnf 11263 df-mnf 11264 df-xr 11265 df-ltxr 11266 df-le 11267 df-sub 11461 df-neg 11462 df-nn 12252 df-2 12321 df-n0 12523 df-z 12610 df-uz 12881 df-fz 13554 df-fzo 13702 df-seq 14058 df-hash 14387 df-sets 17249 df-slot 17267 df-ndx 17279 df-base 17295 df-ress 17316 df-plusg 17348 df-0g 17519 df-gsum 17520 df-mre 17663 df-mrc 17664 df-acs 17666 df-mgm 18723 df-sgrp 18806 df-mnd 18822 df-mhm 18872 df-submnd 18873 df-grp 19034 df-minusg 19035 df-sbg 19036 df-mulg 19165 df-subg 19220 df-ghm 19315 df-gim 19360 df-cntz 19418 df-oppg 19447 df-lsm 19737 df-pj1 19738 df-cmn 19883 df-dprd 20098 df-dpj 20099 |
| This theorem is used by: (None) |
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