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Theorem evls1rhm 21488
Description: Polynomial evaluation is a homomorphism (into the product ring). (Contributed by AV, 11-Sep-2019.)
Hypotheses
Ref Expression
evls1rhm.q 𝑄 = (𝑆 evalSub1 𝑅)
evls1rhm.b 𝐵 = (Base‘𝑆)
evls1rhm.t 𝑇 = (𝑆s 𝐵)
evls1rhm.u 𝑈 = (𝑆s 𝑅)
evls1rhm.w 𝑊 = (Poly1𝑈)
Assertion
Ref Expression
evls1rhm ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → 𝑄 ∈ (𝑊 RingHom 𝑇))

Proof of Theorem evls1rhm
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 evls1rhm.b . . . . . 6 𝐵 = (Base‘𝑆)
21subrgss 20025 . . . . 5 (𝑅 ∈ (SubRing‘𝑆) → 𝑅𝐵)
32adantl 482 . . . 4 ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → 𝑅𝐵)
4 elpwg 4536 . . . . 5 (𝑅 ∈ (SubRing‘𝑆) → (𝑅 ∈ 𝒫 𝐵𝑅𝐵))
54adantl 482 . . . 4 ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → (𝑅 ∈ 𝒫 𝐵𝑅𝐵))
63, 5mpbird 256 . . 3 ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → 𝑅 ∈ 𝒫 𝐵)
7 evls1rhm.q . . . 4 𝑄 = (𝑆 evalSub1 𝑅)
8 eqid 2738 . . . 4 (1o evalSub 𝑆) = (1o evalSub 𝑆)
97, 8, 1evls1fval 21485 . . 3 ((𝑆 ∈ CRing ∧ 𝑅 ∈ 𝒫 𝐵) → 𝑄 = ((𝑥 ∈ (𝐵m (𝐵m 1o)) ↦ (𝑥 ∘ (𝑦𝐵 ↦ (1o × {𝑦})))) ∘ ((1o evalSub 𝑆)‘𝑅)))
106, 9syldan 591 . 2 ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → 𝑄 = ((𝑥 ∈ (𝐵m (𝐵m 1o)) ↦ (𝑥 ∘ (𝑦𝐵 ↦ (1o × {𝑦})))) ∘ ((1o evalSub 𝑆)‘𝑅)))
11 evls1rhm.t . . . 4 𝑇 = (𝑆s 𝐵)
12 eqid 2738 . . . 4 (𝑥 ∈ (𝐵m (𝐵m 1o)) ↦ (𝑥 ∘ (𝑦𝐵 ↦ (1o × {𝑦})))) = (𝑥 ∈ (𝐵m (𝐵m 1o)) ↦ (𝑥 ∘ (𝑦𝐵 ↦ (1o × {𝑦}))))
131, 11, 12evls1rhmlem 21487 . . 3 (𝑆 ∈ CRing → (𝑥 ∈ (𝐵m (𝐵m 1o)) ↦ (𝑥 ∘ (𝑦𝐵 ↦ (1o × {𝑦})))) ∈ ((𝑆s (𝐵m 1o)) RingHom 𝑇))
14 1on 8309 . . . . 5 1o ∈ On
15 eqid 2738 . . . . . 6 ((1o evalSub 𝑆)‘𝑅) = ((1o evalSub 𝑆)‘𝑅)
16 eqid 2738 . . . . . 6 (1o mPoly 𝑈) = (1o mPoly 𝑈)
17 evls1rhm.u . . . . . 6 𝑈 = (𝑆s 𝑅)
18 eqid 2738 . . . . . 6 (𝑆s (𝐵m 1o)) = (𝑆s (𝐵m 1o))
1915, 16, 17, 18, 1evlsrhm 21298 . . . . 5 ((1o ∈ On ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → ((1o evalSub 𝑆)‘𝑅) ∈ ((1o mPoly 𝑈) RingHom (𝑆s (𝐵m 1o))))
2014, 19mp3an1 1447 . . . 4 ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → ((1o evalSub 𝑆)‘𝑅) ∈ ((1o mPoly 𝑈) RingHom (𝑆s (𝐵m 1o))))
21 eqidd 2739 . . . . 5 ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → (Base‘𝑊) = (Base‘𝑊))
22 eqidd 2739 . . . . 5 ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → (Base‘(𝑆s (𝐵m 1o))) = (Base‘(𝑆s (𝐵m 1o))))
23 evls1rhm.w . . . . . . 7 𝑊 = (Poly1𝑈)
24 eqid 2738 . . . . . . 7 (PwSer1𝑈) = (PwSer1𝑈)
25 eqid 2738 . . . . . . 7 (Base‘𝑊) = (Base‘𝑊)
2623, 24, 25ply1bas 21366 . . . . . 6 (Base‘𝑊) = (Base‘(1o mPoly 𝑈))
2726a1i 11 . . . . 5 ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → (Base‘𝑊) = (Base‘(1o mPoly 𝑈)))
28 eqid 2738 . . . . . . . 8 (+g𝑊) = (+g𝑊)
2923, 16, 28ply1plusg 21396 . . . . . . 7 (+g𝑊) = (+g‘(1o mPoly 𝑈))
3029a1i 11 . . . . . 6 ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → (+g𝑊) = (+g‘(1o mPoly 𝑈)))
3130oveqdr 7303 . . . . 5 (((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) ∧ (𝑥 ∈ (Base‘𝑊) ∧ 𝑦 ∈ (Base‘𝑊))) → (𝑥(+g𝑊)𝑦) = (𝑥(+g‘(1o mPoly 𝑈))𝑦))
32 eqidd 2739 . . . . 5 (((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) ∧ (𝑥 ∈ (Base‘(𝑆s (𝐵m 1o))) ∧ 𝑦 ∈ (Base‘(𝑆s (𝐵m 1o))))) → (𝑥(+g‘(𝑆s (𝐵m 1o)))𝑦) = (𝑥(+g‘(𝑆s (𝐵m 1o)))𝑦))
33 eqid 2738 . . . . . . . 8 (.r𝑊) = (.r𝑊)
3423, 16, 33ply1mulr 21398 . . . . . . 7 (.r𝑊) = (.r‘(1o mPoly 𝑈))
3534a1i 11 . . . . . 6 ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → (.r𝑊) = (.r‘(1o mPoly 𝑈)))
3635oveqdr 7303 . . . . 5 (((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) ∧ (𝑥 ∈ (Base‘𝑊) ∧ 𝑦 ∈ (Base‘𝑊))) → (𝑥(.r𝑊)𝑦) = (𝑥(.r‘(1o mPoly 𝑈))𝑦))
37 eqidd 2739 . . . . 5 (((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) ∧ (𝑥 ∈ (Base‘(𝑆s (𝐵m 1o))) ∧ 𝑦 ∈ (Base‘(𝑆s (𝐵m 1o))))) → (𝑥(.r‘(𝑆s (𝐵m 1o)))𝑦) = (𝑥(.r‘(𝑆s (𝐵m 1o)))𝑦))
3821, 22, 27, 22, 31, 32, 36, 37rhmpropd 20060 . . . 4 ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → (𝑊 RingHom (𝑆s (𝐵m 1o))) = ((1o mPoly 𝑈) RingHom (𝑆s (𝐵m 1o))))
3920, 38eleqtrrd 2842 . . 3 ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → ((1o evalSub 𝑆)‘𝑅) ∈ (𝑊 RingHom (𝑆s (𝐵m 1o))))
40 rhmco 19981 . . 3 (((𝑥 ∈ (𝐵m (𝐵m 1o)) ↦ (𝑥 ∘ (𝑦𝐵 ↦ (1o × {𝑦})))) ∈ ((𝑆s (𝐵m 1o)) RingHom 𝑇) ∧ ((1o evalSub 𝑆)‘𝑅) ∈ (𝑊 RingHom (𝑆s (𝐵m 1o)))) → ((𝑥 ∈ (𝐵m (𝐵m 1o)) ↦ (𝑥 ∘ (𝑦𝐵 ↦ (1o × {𝑦})))) ∘ ((1o evalSub 𝑆)‘𝑅)) ∈ (𝑊 RingHom 𝑇))
4113, 39, 40syl2an2r 682 . 2 ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → ((𝑥 ∈ (𝐵m (𝐵m 1o)) ↦ (𝑥 ∘ (𝑦𝐵 ↦ (1o × {𝑦})))) ∘ ((1o evalSub 𝑆)‘𝑅)) ∈ (𝑊 RingHom 𝑇))
4210, 41eqeltrd 2839 1 ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → 𝑄 ∈ (𝑊 RingHom 𝑇))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 205  wa 396   = wceq 1539  wcel 2106  wss 3887  𝒫 cpw 4533  {csn 4561  cmpt 5157   × cxp 5587  ccom 5593  Oncon0 6266  cfv 6433  (class class class)co 7275  1oc1o 8290  m cmap 8615  Basecbs 16912  s cress 16941  +gcplusg 16962  .rcmulr 16963  s cpws 17157  CRingccrg 19784   RingHom crh 19956  SubRingcsubrg 20020   mPoly cmpl 21109   evalSub ces 21280  PwSer1cps1 21346  Poly1cpl1 21348   evalSub1 ces1 21479
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2709  ax-rep 5209  ax-sep 5223  ax-nul 5230  ax-pow 5288  ax-pr 5352  ax-un 7588  ax-cnex 10927  ax-resscn 10928  ax-1cn 10929  ax-icn 10930  ax-addcl 10931  ax-addrcl 10932  ax-mulcl 10933  ax-mulrcl 10934  ax-mulcom 10935  ax-addass 10936  ax-mulass 10937  ax-distr 10938  ax-i2m1 10939  ax-1ne0 10940  ax-1rid 10941  ax-rnegex 10942  ax-rrecex 10943  ax-cnre 10944  ax-pre-lttri 10945  ax-pre-lttrn 10946  ax-pre-ltadd 10947  ax-pre-mulgt0 10948
This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3or 1087  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2068  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2816  df-nfc 2889  df-ne 2944  df-nel 3050  df-ral 3069  df-rex 3070  df-rmo 3071  df-reu 3072  df-rab 3073  df-v 3434  df-sbc 3717  df-csb 3833  df-dif 3890  df-un 3892  df-in 3894  df-ss 3904  df-pss 3906  df-nul 4257  df-if 4460  df-pw 4535  df-sn 4562  df-pr 4564  df-tp 4566  df-op 4568  df-uni 4840  df-int 4880  df-iun 4926  df-iin 4927  df-br 5075  df-opab 5137  df-mpt 5158  df-tr 5192  df-id 5489  df-eprel 5495  df-po 5503  df-so 5504  df-fr 5544  df-se 5545  df-we 5546  df-xp 5595  df-rel 5596  df-cnv 5597  df-co 5598  df-dm 5599  df-rn 5600  df-res 5601  df-ima 5602  df-pred 6202  df-ord 6269  df-on 6270  df-lim 6271  df-suc 6272  df-iota 6391  df-fun 6435  df-fn 6436  df-f 6437  df-f1 6438  df-fo 6439  df-f1o 6440  df-fv 6441  df-isom 6442  df-riota 7232  df-ov 7278  df-oprab 7279  df-mpo 7280  df-of 7533  df-ofr 7534  df-om 7713  df-1st 7831  df-2nd 7832  df-supp 7978  df-frecs 8097  df-wrecs 8128  df-recs 8202  df-rdg 8241  df-1o 8297  df-er 8498  df-map 8617  df-pm 8618  df-ixp 8686  df-en 8734  df-dom 8735  df-sdom 8736  df-fin 8737  df-fsupp 9129  df-sup 9201  df-oi 9269  df-card 9697  df-pnf 11011  df-mnf 11012  df-xr 11013  df-ltxr 11014  df-le 11015  df-sub 11207  df-neg 11208  df-nn 11974  df-2 12036  df-3 12037  df-4 12038  df-5 12039  df-6 12040  df-7 12041  df-8 12042  df-9 12043  df-n0 12234  df-z 12320  df-dec 12438  df-uz 12583  df-fz 13240  df-fzo 13383  df-seq 13722  df-hash 14045  df-struct 16848  df-sets 16865  df-slot 16883  df-ndx 16895  df-base 16913  df-ress 16942  df-plusg 16975  df-mulr 16976  df-sca 16978  df-vsca 16979  df-ip 16980  df-tset 16981  df-ple 16982  df-ds 16984  df-hom 16986  df-cco 16987  df-0g 17152  df-gsum 17153  df-prds 17158  df-pws 17160  df-mre 17295  df-mrc 17296  df-acs 17298  df-mgm 18326  df-sgrp 18375  df-mnd 18386  df-mhm 18430  df-submnd 18431  df-grp 18580  df-minusg 18581  df-sbg 18582  df-mulg 18701  df-subg 18752  df-ghm 18832  df-cntz 18923  df-cmn 19388  df-abl 19389  df-mgp 19721  df-ur 19738  df-srg 19742  df-ring 19785  df-cring 19786  df-rnghom 19959  df-subrg 20022  df-lmod 20125  df-lss 20194  df-lsp 20234  df-assa 21060  df-asp 21061  df-ascl 21062  df-psr 21112  df-mvr 21113  df-mpl 21114  df-opsr 21116  df-evls 21282  df-psr1 21351  df-ply1 21353  df-evls1 21481
This theorem is referenced by:  evls1gsumadd  21490  evls1gsummul  21491  evls1pw  21492
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