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Theorem mat1ghm 20208
 Description: There is a group homomorphism from the additive group of a ring to the additive group of the ring of matrices with dimension 1 over this ring. (Contributed by AV, 22-Dec-2019.)
Hypotheses
Ref Expression
mat1rhmval.k 𝐾 = (Base‘𝑅)
mat1rhmval.a 𝐴 = ({𝐸} Mat 𝑅)
mat1rhmval.b 𝐵 = (Base‘𝐴)
mat1rhmval.o 𝑂 = ⟨𝐸, 𝐸
mat1rhmval.f 𝐹 = (𝑥𝐾 ↦ {⟨𝑂, 𝑥⟩})
Assertion
Ref Expression
mat1ghm ((𝑅 ∈ Ring ∧ 𝐸𝑉) → 𝐹 ∈ (𝑅 GrpHom 𝐴))
Distinct variable groups:   𝑥,𝐾   𝑥,𝑂   𝑥,𝐸   𝑥,𝑅   𝑥,𝑉   𝑥,𝐵   𝑥,𝐴   𝑥,𝐹

Proof of Theorem mat1ghm
Dummy variables 𝑖 𝑗 𝑤 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 mat1rhmval.k . 2 𝐾 = (Base‘𝑅)
2 mat1rhmval.b . 2 𝐵 = (Base‘𝐴)
3 eqid 2621 . 2 (+g𝑅) = (+g𝑅)
4 eqid 2621 . 2 (+g𝐴) = (+g𝐴)
5 ringgrp 18473 . . 3 (𝑅 ∈ Ring → 𝑅 ∈ Grp)
65adantr 481 . 2 ((𝑅 ∈ Ring ∧ 𝐸𝑉) → 𝑅 ∈ Grp)
7 snfi 7982 . . 3 {𝐸} ∈ Fin
8 simpl 473 . . 3 ((𝑅 ∈ Ring ∧ 𝐸𝑉) → 𝑅 ∈ Ring)
9 mat1rhmval.a . . . 4 𝐴 = ({𝐸} Mat 𝑅)
109matgrp 20155 . . 3 (({𝐸} ∈ Fin ∧ 𝑅 ∈ Ring) → 𝐴 ∈ Grp)
117, 8, 10sylancr 694 . 2 ((𝑅 ∈ Ring ∧ 𝐸𝑉) → 𝐴 ∈ Grp)
12 mat1rhmval.o . . 3 𝑂 = ⟨𝐸, 𝐸
13 mat1rhmval.f . . 3 𝐹 = (𝑥𝐾 ↦ {⟨𝑂, 𝑥⟩})
141, 9, 2, 12, 13mat1f 20207 . 2 ((𝑅 ∈ Ring ∧ 𝐸𝑉) → 𝐹:𝐾𝐵)
158adantr 481 . . . . . . 7 (((𝑅 ∈ Ring ∧ 𝐸𝑉) ∧ (𝑤𝐾𝑦𝐾)) → 𝑅 ∈ Ring)
16 simpr 477 . . . . . . . 8 ((𝑅 ∈ Ring ∧ 𝐸𝑉) → 𝐸𝑉)
1716adantr 481 . . . . . . 7 (((𝑅 ∈ Ring ∧ 𝐸𝑉) ∧ (𝑤𝐾𝑦𝐾)) → 𝐸𝑉)
18 simpl 473 . . . . . . . 8 ((𝑤𝐾𝑦𝐾) → 𝑤𝐾)
1918adantl 482 . . . . . . 7 (((𝑅 ∈ Ring ∧ 𝐸𝑉) ∧ (𝑤𝐾𝑦𝐾)) → 𝑤𝐾)
201, 9, 2, 12, 13mat1rhmelval 20205 . . . . . . 7 ((𝑅 ∈ Ring ∧ 𝐸𝑉𝑤𝐾) → (𝐸(𝐹𝑤)𝐸) = 𝑤)
2115, 17, 19, 20syl3anc 1323 . . . . . 6 (((𝑅 ∈ Ring ∧ 𝐸𝑉) ∧ (𝑤𝐾𝑦𝐾)) → (𝐸(𝐹𝑤)𝐸) = 𝑤)
22 simpr 477 . . . . . . . 8 ((𝑤𝐾𝑦𝐾) → 𝑦𝐾)
2322adantl 482 . . . . . . 7 (((𝑅 ∈ Ring ∧ 𝐸𝑉) ∧ (𝑤𝐾𝑦𝐾)) → 𝑦𝐾)
241, 9, 2, 12, 13mat1rhmelval 20205 . . . . . . 7 ((𝑅 ∈ Ring ∧ 𝐸𝑉𝑦𝐾) → (𝐸(𝐹𝑦)𝐸) = 𝑦)
2515, 17, 23, 24syl3anc 1323 . . . . . 6 (((𝑅 ∈ Ring ∧ 𝐸𝑉) ∧ (𝑤𝐾𝑦𝐾)) → (𝐸(𝐹𝑦)𝐸) = 𝑦)
2621, 25oveq12d 6622 . . . . 5 (((𝑅 ∈ Ring ∧ 𝐸𝑉) ∧ (𝑤𝐾𝑦𝐾)) → ((𝐸(𝐹𝑤)𝐸)(+g𝑅)(𝐸(𝐹𝑦)𝐸)) = (𝑤(+g𝑅)𝑦))
271, 9, 2, 12, 13mat1rhmcl 20206 . . . . . . 7 ((𝑅 ∈ Ring ∧ 𝐸𝑉𝑤𝐾) → (𝐹𝑤) ∈ 𝐵)
2815, 17, 19, 27syl3anc 1323 . . . . . 6 (((𝑅 ∈ Ring ∧ 𝐸𝑉) ∧ (𝑤𝐾𝑦𝐾)) → (𝐹𝑤) ∈ 𝐵)
291, 9, 2, 12, 13mat1rhmcl 20206 . . . . . . 7 ((𝑅 ∈ Ring ∧ 𝐸𝑉𝑦𝐾) → (𝐹𝑦) ∈ 𝐵)
3015, 17, 23, 29syl3anc 1323 . . . . . 6 (((𝑅 ∈ Ring ∧ 𝐸𝑉) ∧ (𝑤𝐾𝑦𝐾)) → (𝐹𝑦) ∈ 𝐵)
31 snidg 4177 . . . . . . . . 9 (𝐸𝑉𝐸 ∈ {𝐸})
3231, 31jca 554 . . . . . . . 8 (𝐸𝑉 → (𝐸 ∈ {𝐸} ∧ 𝐸 ∈ {𝐸}))
3332adantl 482 . . . . . . 7 ((𝑅 ∈ Ring ∧ 𝐸𝑉) → (𝐸 ∈ {𝐸} ∧ 𝐸 ∈ {𝐸}))
3433adantr 481 . . . . . 6 (((𝑅 ∈ Ring ∧ 𝐸𝑉) ∧ (𝑤𝐾𝑦𝐾)) → (𝐸 ∈ {𝐸} ∧ 𝐸 ∈ {𝐸}))
359, 2, 4, 3matplusgcell 20158 . . . . . 6 ((((𝐹𝑤) ∈ 𝐵 ∧ (𝐹𝑦) ∈ 𝐵) ∧ (𝐸 ∈ {𝐸} ∧ 𝐸 ∈ {𝐸})) → (𝐸((𝐹𝑤)(+g𝐴)(𝐹𝑦))𝐸) = ((𝐸(𝐹𝑤)𝐸)(+g𝑅)(𝐸(𝐹𝑦)𝐸)))
3628, 30, 34, 35syl21anc 1322 . . . . 5 (((𝑅 ∈ Ring ∧ 𝐸𝑉) ∧ (𝑤𝐾𝑦𝐾)) → (𝐸((𝐹𝑤)(+g𝐴)(𝐹𝑦))𝐸) = ((𝐸(𝐹𝑤)𝐸)(+g𝑅)(𝐸(𝐹𝑦)𝐸)))
371, 3ringacl 18499 . . . . . . 7 ((𝑅 ∈ Ring ∧ 𝑤𝐾𝑦𝐾) → (𝑤(+g𝑅)𝑦) ∈ 𝐾)
3815, 19, 23, 37syl3anc 1323 . . . . . 6 (((𝑅 ∈ Ring ∧ 𝐸𝑉) ∧ (𝑤𝐾𝑦𝐾)) → (𝑤(+g𝑅)𝑦) ∈ 𝐾)
391, 9, 2, 12, 13mat1rhmelval 20205 . . . . . 6 ((𝑅 ∈ Ring ∧ 𝐸𝑉 ∧ (𝑤(+g𝑅)𝑦) ∈ 𝐾) → (𝐸(𝐹‘(𝑤(+g𝑅)𝑦))𝐸) = (𝑤(+g𝑅)𝑦))
4015, 17, 38, 39syl3anc 1323 . . . . 5 (((𝑅 ∈ Ring ∧ 𝐸𝑉) ∧ (𝑤𝐾𝑦𝐾)) → (𝐸(𝐹‘(𝑤(+g𝑅)𝑦))𝐸) = (𝑤(+g𝑅)𝑦))
4126, 36, 403eqtr4rd 2666 . . . 4 (((𝑅 ∈ Ring ∧ 𝐸𝑉) ∧ (𝑤𝐾𝑦𝐾)) → (𝐸(𝐹‘(𝑤(+g𝑅)𝑦))𝐸) = (𝐸((𝐹𝑤)(+g𝐴)(𝐹𝑦))𝐸))
42 oveq1 6611 . . . . . . . 8 (𝑖 = 𝐸 → (𝑖(𝐹‘(𝑤(+g𝑅)𝑦))𝑗) = (𝐸(𝐹‘(𝑤(+g𝑅)𝑦))𝑗))
43 oveq1 6611 . . . . . . . 8 (𝑖 = 𝐸 → (𝑖((𝐹𝑤)(+g𝐴)(𝐹𝑦))𝑗) = (𝐸((𝐹𝑤)(+g𝐴)(𝐹𝑦))𝑗))
4442, 43eqeq12d 2636 . . . . . . 7 (𝑖 = 𝐸 → ((𝑖(𝐹‘(𝑤(+g𝑅)𝑦))𝑗) = (𝑖((𝐹𝑤)(+g𝐴)(𝐹𝑦))𝑗) ↔ (𝐸(𝐹‘(𝑤(+g𝑅)𝑦))𝑗) = (𝐸((𝐹𝑤)(+g𝐴)(𝐹𝑦))𝑗)))
45 oveq2 6612 . . . . . . . 8 (𝑗 = 𝐸 → (𝐸(𝐹‘(𝑤(+g𝑅)𝑦))𝑗) = (𝐸(𝐹‘(𝑤(+g𝑅)𝑦))𝐸))
46 oveq2 6612 . . . . . . . 8 (𝑗 = 𝐸 → (𝐸((𝐹𝑤)(+g𝐴)(𝐹𝑦))𝑗) = (𝐸((𝐹𝑤)(+g𝐴)(𝐹𝑦))𝐸))
4745, 46eqeq12d 2636 . . . . . . 7 (𝑗 = 𝐸 → ((𝐸(𝐹‘(𝑤(+g𝑅)𝑦))𝑗) = (𝐸((𝐹𝑤)(+g𝐴)(𝐹𝑦))𝑗) ↔ (𝐸(𝐹‘(𝑤(+g𝑅)𝑦))𝐸) = (𝐸((𝐹𝑤)(+g𝐴)(𝐹𝑦))𝐸)))
4844, 472ralsng 4191 . . . . . 6 ((𝐸𝑉𝐸𝑉) → (∀𝑖 ∈ {𝐸}∀𝑗 ∈ {𝐸} (𝑖(𝐹‘(𝑤(+g𝑅)𝑦))𝑗) = (𝑖((𝐹𝑤)(+g𝐴)(𝐹𝑦))𝑗) ↔ (𝐸(𝐹‘(𝑤(+g𝑅)𝑦))𝐸) = (𝐸((𝐹𝑤)(+g𝐴)(𝐹𝑦))𝐸)))
4916, 16, 48syl2anc 692 . . . . 5 ((𝑅 ∈ Ring ∧ 𝐸𝑉) → (∀𝑖 ∈ {𝐸}∀𝑗 ∈ {𝐸} (𝑖(𝐹‘(𝑤(+g𝑅)𝑦))𝑗) = (𝑖((𝐹𝑤)(+g𝐴)(𝐹𝑦))𝑗) ↔ (𝐸(𝐹‘(𝑤(+g𝑅)𝑦))𝐸) = (𝐸((𝐹𝑤)(+g𝐴)(𝐹𝑦))𝐸)))
5049adantr 481 . . . 4 (((𝑅 ∈ Ring ∧ 𝐸𝑉) ∧ (𝑤𝐾𝑦𝐾)) → (∀𝑖 ∈ {𝐸}∀𝑗 ∈ {𝐸} (𝑖(𝐹‘(𝑤(+g𝑅)𝑦))𝑗) = (𝑖((𝐹𝑤)(+g𝐴)(𝐹𝑦))𝑗) ↔ (𝐸(𝐹‘(𝑤(+g𝑅)𝑦))𝐸) = (𝐸((𝐹𝑤)(+g𝐴)(𝐹𝑦))𝐸)))
5141, 50mpbird 247 . . 3 (((𝑅 ∈ Ring ∧ 𝐸𝑉) ∧ (𝑤𝐾𝑦𝐾)) → ∀𝑖 ∈ {𝐸}∀𝑗 ∈ {𝐸} (𝑖(𝐹‘(𝑤(+g𝑅)𝑦))𝑗) = (𝑖((𝐹𝑤)(+g𝐴)(𝐹𝑦))𝑗))
521, 9, 2, 12, 13mat1rhmcl 20206 . . . . 5 ((𝑅 ∈ Ring ∧ 𝐸𝑉 ∧ (𝑤(+g𝑅)𝑦) ∈ 𝐾) → (𝐹‘(𝑤(+g𝑅)𝑦)) ∈ 𝐵)
5315, 17, 38, 52syl3anc 1323 . . . 4 (((𝑅 ∈ Ring ∧ 𝐸𝑉) ∧ (𝑤𝐾𝑦𝐾)) → (𝐹‘(𝑤(+g𝑅)𝑦)) ∈ 𝐵)
549matring 20168 . . . . . . 7 (({𝐸} ∈ Fin ∧ 𝑅 ∈ Ring) → 𝐴 ∈ Ring)
557, 8, 54sylancr 694 . . . . . 6 ((𝑅 ∈ Ring ∧ 𝐸𝑉) → 𝐴 ∈ Ring)
5655adantr 481 . . . . 5 (((𝑅 ∈ Ring ∧ 𝐸𝑉) ∧ (𝑤𝐾𝑦𝐾)) → 𝐴 ∈ Ring)
572, 4ringacl 18499 . . . . 5 ((𝐴 ∈ Ring ∧ (𝐹𝑤) ∈ 𝐵 ∧ (𝐹𝑦) ∈ 𝐵) → ((𝐹𝑤)(+g𝐴)(𝐹𝑦)) ∈ 𝐵)
5856, 28, 30, 57syl3anc 1323 . . . 4 (((𝑅 ∈ Ring ∧ 𝐸𝑉) ∧ (𝑤𝐾𝑦𝐾)) → ((𝐹𝑤)(+g𝐴)(𝐹𝑦)) ∈ 𝐵)
599, 2eqmat 20149 . . . 4 (((𝐹‘(𝑤(+g𝑅)𝑦)) ∈ 𝐵 ∧ ((𝐹𝑤)(+g𝐴)(𝐹𝑦)) ∈ 𝐵) → ((𝐹‘(𝑤(+g𝑅)𝑦)) = ((𝐹𝑤)(+g𝐴)(𝐹𝑦)) ↔ ∀𝑖 ∈ {𝐸}∀𝑗 ∈ {𝐸} (𝑖(𝐹‘(𝑤(+g𝑅)𝑦))𝑗) = (𝑖((𝐹𝑤)(+g𝐴)(𝐹𝑦))𝑗)))
6053, 58, 59syl2anc 692 . . 3 (((𝑅 ∈ Ring ∧ 𝐸𝑉) ∧ (𝑤𝐾𝑦𝐾)) → ((𝐹‘(𝑤(+g𝑅)𝑦)) = ((𝐹𝑤)(+g𝐴)(𝐹𝑦)) ↔ ∀𝑖 ∈ {𝐸}∀𝑗 ∈ {𝐸} (𝑖(𝐹‘(𝑤(+g𝑅)𝑦))𝑗) = (𝑖((𝐹𝑤)(+g𝐴)(𝐹𝑦))𝑗)))
6151, 60mpbird 247 . 2 (((𝑅 ∈ Ring ∧ 𝐸𝑉) ∧ (𝑤𝐾𝑦𝐾)) → (𝐹‘(𝑤(+g𝑅)𝑦)) = ((𝐹𝑤)(+g𝐴)(𝐹𝑦)))
621, 2, 3, 4, 6, 11, 14, 61isghmd 17590 1 ((𝑅 ∈ Ring ∧ 𝐸𝑉) → 𝐹 ∈ (𝑅 GrpHom 𝐴))
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ↔ wb 196   ∧ wa 384   = wceq 1480   ∈ wcel 1987  ∀wral 2907  {csn 4148  ⟨cop 4154   ↦ cmpt 4673  ‘cfv 5847  (class class class)co 6604  Fincfn 7899  Basecbs 15781  +gcplusg 15862  Grpcgrp 17343   GrpHom cghm 17578  Ringcrg 18468   Mat cmat 20132 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1719  ax-4 1734  ax-5 1836  ax-6 1885  ax-7 1932  ax-8 1989  ax-9 1996  ax-10 2016  ax-11 2031  ax-12 2044  ax-13 2245  ax-ext 2601  ax-rep 4731  ax-sep 4741  ax-nul 4749  ax-pow 4803  ax-pr 4867  ax-un 6902  ax-inf2 8482  ax-cnex 9936  ax-resscn 9937  ax-1cn 9938  ax-icn 9939  ax-addcl 9940  ax-addrcl 9941  ax-mulcl 9942  ax-mulrcl 9943  ax-mulcom 9944  ax-addass 9945  ax-mulass 9946  ax-distr 9947  ax-i2m1 9948  ax-1ne0 9949  ax-1rid 9950  ax-rnegex 9951  ax-rrecex 9952  ax-cnre 9953  ax-pre-lttri 9954  ax-pre-lttrn 9955  ax-pre-ltadd 9956  ax-pre-mulgt0 9957 This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1037  df-3an 1038  df-tru 1483  df-ex 1702  df-nf 1707  df-sb 1878  df-eu 2473  df-mo 2474  df-clab 2608  df-cleq 2614  df-clel 2617  df-nfc 2750  df-ne 2791  df-nel 2894  df-ral 2912  df-rex 2913  df-reu 2914  df-rmo 2915  df-rab 2916  df-v 3188  df-sbc 3418  df-csb 3515  df-dif 3558  df-un 3560  df-in 3562  df-ss 3569  df-pss 3571  df-nul 3892  df-if 4059  df-pw 4132  df-sn 4149  df-pr 4151  df-tp 4153  df-op 4155  df-ot 4157  df-uni 4403  df-int 4441  df-iun 4487  df-iin 4488  df-br 4614  df-opab 4674  df-mpt 4675  df-tr 4713  df-eprel 4985  df-id 4989  df-po 4995  df-so 4996  df-fr 5033  df-se 5034  df-we 5035  df-xp 5080  df-rel 5081  df-cnv 5082  df-co 5083  df-dm 5084  df-rn 5085  df-res 5086  df-ima 5087  df-pred 5639  df-ord 5685  df-on 5686  df-lim 5687  df-suc 5688  df-iota 5810  df-fun 5849  df-fn 5850  df-f 5851  df-f1 5852  df-fo 5853  df-f1o 5854  df-fv 5855  df-isom 5856  df-riota 6565  df-ov 6607  df-oprab 6608  df-mpt2 6609  df-of 6850  df-om 7013  df-1st 7113  df-2nd 7114  df-supp 7241  df-wrecs 7352  df-recs 7413  df-rdg 7451  df-1o 7505  df-oadd 7509  df-er 7687  df-map 7804  df-ixp 7853  df-en 7900  df-dom 7901  df-sdom 7902  df-fin 7903  df-fsupp 8220  df-sup 8292  df-oi 8359  df-card 8709  df-pnf 10020  df-mnf 10021  df-xr 10022  df-ltxr 10023  df-le 10024  df-sub 10212  df-neg 10213  df-nn 10965  df-2 11023  df-3 11024  df-4 11025  df-5 11026  df-6 11027  df-7 11028  df-8 11029  df-9 11030  df-n0 11237  df-z 11322  df-dec 11438  df-uz 11632  df-fz 12269  df-fzo 12407  df-seq 12742  df-hash 13058  df-struct 15783  df-ndx 15784  df-slot 15785  df-base 15786  df-sets 15787  df-ress 15788  df-plusg 15875  df-mulr 15876  df-sca 15878  df-vsca 15879  df-ip 15880  df-tset 15881  df-ple 15882  df-ds 15885  df-hom 15887  df-cco 15888  df-0g 16023  df-gsum 16024  df-prds 16029  df-pws 16031  df-mre 16167  df-mrc 16168  df-acs 16170  df-mgm 17163  df-sgrp 17205  df-mnd 17216  df-mhm 17256  df-submnd 17257  df-grp 17346  df-minusg 17347  df-sbg 17348  df-mulg 17462  df-subg 17512  df-ghm 17579  df-cntz 17671  df-cmn 18116  df-abl 18117  df-mgp 18411  df-ur 18423  df-ring 18470  df-subrg 18699  df-lmod 18786  df-lss 18852  df-sra 19091  df-rgmod 19092  df-dsmm 19995  df-frlm 20010  df-mamu 20109  df-mat 20133 This theorem is referenced by:  mat1rhm  20210
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