Theorem evls1rhm 22243

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 = (𝑆 ↑s 𝐵)
evls1rhm.u	⊢ 𝑈 = (𝑆 ↾s 𝑅)
evls1rhm.w	⊢ 𝑊 = (Poly1‘𝑈)

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.

Step	Hyp	Ref	Expression
1		evls1rhm.b	. . . . . 6 ⊢ 𝐵 = (Base‘𝑆)
2	1	subrgss 20493	. . . . 5 ⊢ (𝑅 ∈ (SubRing‘𝑆) → 𝑅 ⊆ 𝐵)
3	2	adantl 481	. . . 4 ⊢ ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → 𝑅 ⊆ 𝐵)
4		elpwg 4552	. . . . 5 ⊢ (𝑅 ∈ (SubRing‘𝑆) → (𝑅 ∈ 𝒫 𝐵 ↔ 𝑅 ⊆ 𝐵))
5	4	adantl 481	. . . 4 ⊢ ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → (𝑅 ∈ 𝒫 𝐵 ↔ 𝑅 ⊆ 𝐵))
6	3, 5	mpbird 257	. . 3 ⊢ ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → 𝑅 ∈ 𝒫 𝐵)
7		evls1rhm.q	. . . 4 ⊢ 𝑄 = (𝑆 evalSub1 𝑅)
8		eqid 2731	. . . 4 ⊢ (1o evalSub 𝑆) = (1o evalSub 𝑆)
9	7, 8, 1	evls1fval 22240	. . 3 ⊢ ((𝑆 ∈ CRing ∧ 𝑅 ∈ 𝒫 𝐵) → 𝑄 = ((𝑥 ∈ (𝐵 ↑m (𝐵 ↑m 1o)) ↦ (𝑥 ∘ (𝑦 ∈ 𝐵 ↦ (1o × {𝑦})))) ∘ ((1o evalSub 𝑆)‘𝑅)))
10	6, 9	syldan 591	. 2 ⊢ ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → 𝑄 = ((𝑥 ∈ (𝐵 ↑m (𝐵 ↑m 1o)) ↦ (𝑥 ∘ (𝑦 ∈ 𝐵 ↦ (1o × {𝑦})))) ∘ ((1o evalSub 𝑆)‘𝑅)))
11		evls1rhm.t	. . . 4 ⊢ 𝑇 = (𝑆 ↑s 𝐵)
12		eqid 2731	. . . 4 ⊢ (𝑥 ∈ (𝐵 ↑m (𝐵 ↑m 1o)) ↦ (𝑥 ∘ (𝑦 ∈ 𝐵 ↦ (1o × {𝑦})))) = (𝑥 ∈ (𝐵 ↑m (𝐵 ↑m 1o)) ↦ (𝑥 ∘ (𝑦 ∈ 𝐵 ↦ (1o × {𝑦}))))
13	1, 11, 12	evls1rhmlem 22242	. . 3 ⊢ (𝑆 ∈ CRing → (𝑥 ∈ (𝐵 ↑m (𝐵 ↑m 1o)) ↦ (𝑥 ∘ (𝑦 ∈ 𝐵 ↦ (1o × {𝑦})))) ∈ ((𝑆 ↑s (𝐵 ↑m 1o)) RingHom 𝑇))
14		1on 8403	. . . . 5 ⊢ 1o ∈ On
15		eqid 2731	. . . . . 6 ⊢ ((1o evalSub 𝑆)‘𝑅) = ((1o evalSub 𝑆)‘𝑅)
16		eqid 2731	. . . . . 6 ⊢ (1o mPoly 𝑈) = (1o mPoly 𝑈)
17		evls1rhm.u	. . . . . 6 ⊢ 𝑈 = (𝑆 ↾s 𝑅)
18		eqid 2731	. . . . . 6 ⊢ (𝑆 ↑s (𝐵 ↑m 1o)) = (𝑆 ↑s (𝐵 ↑m 1o))
19	15, 16, 17, 18, 1	evlsrhm 22029	. . . . 5 ⊢ ((1o ∈ On ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → ((1o evalSub 𝑆)‘𝑅) ∈ ((1o mPoly 𝑈) RingHom (𝑆 ↑s (𝐵 ↑m 1o))))
20	14, 19	mp3an1 1450	. . . 4 ⊢ ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → ((1o evalSub 𝑆)‘𝑅) ∈ ((1o mPoly 𝑈) RingHom (𝑆 ↑s (𝐵 ↑m 1o))))
21		eqidd 2732	. . . . 5 ⊢ ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → (Base‘𝑊) = (Base‘𝑊))
22		eqidd 2732	. . . . 5 ⊢ ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → (Base‘(𝑆 ↑s (𝐵 ↑m 1o))) = (Base‘(𝑆 ↑s (𝐵 ↑m 1o))))
23		evls1rhm.w	. . . . . . 7 ⊢ 𝑊 = (Poly1‘𝑈)
24		eqid 2731	. . . . . . 7 ⊢ (Base‘𝑊) = (Base‘𝑊)
25	23, 24	ply1bas 22113	. . . . . 6 ⊢ (Base‘𝑊) = (Base‘(1o mPoly 𝑈))
26	25	a1i 11	. . . . 5 ⊢ ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → (Base‘𝑊) = (Base‘(1o mPoly 𝑈)))
27		eqid 2731	. . . . . . . 8 ⊢ (+g‘𝑊) = (+g‘𝑊)
28	23, 16, 27	ply1plusg 22142	. . . . . . 7 ⊢ (+g‘𝑊) = (+g‘(1o mPoly 𝑈))
29	28	a1i 11	. . . . . 6 ⊢ ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → (+g‘𝑊) = (+g‘(1o mPoly 𝑈)))
30	29	oveqdr 7380	. . . . 5 ⊢ (((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) ∧ (𝑥 ∈ (Base‘𝑊) ∧ 𝑦 ∈ (Base‘𝑊))) → (𝑥(+g‘𝑊)𝑦) = (𝑥(+g‘(1o mPoly 𝑈))𝑦))
31		eqidd 2732	. . . . 5 ⊢ (((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) ∧ (𝑥 ∈ (Base‘(𝑆 ↑s (𝐵 ↑m 1o))) ∧ 𝑦 ∈ (Base‘(𝑆 ↑s (𝐵 ↑m 1o))))) → (𝑥(+g‘(𝑆 ↑s (𝐵 ↑m 1o)))𝑦) = (𝑥(+g‘(𝑆 ↑s (𝐵 ↑m 1o)))𝑦))
32		eqid 2731	. . . . . . . 8 ⊢ (.r‘𝑊) = (.r‘𝑊)
33	23, 16, 32	ply1mulr 22144	. . . . . . 7 ⊢ (.r‘𝑊) = (.r‘(1o mPoly 𝑈))
34	33	a1i 11	. . . . . 6 ⊢ ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → (.r‘𝑊) = (.r‘(1o mPoly 𝑈)))
35	34	oveqdr 7380	. . . . 5 ⊢ (((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) ∧ (𝑥 ∈ (Base‘𝑊) ∧ 𝑦 ∈ (Base‘𝑊))) → (𝑥(.r‘𝑊)𝑦) = (𝑥(.r‘(1o mPoly 𝑈))𝑦))
36		eqidd 2732	. . . . 5 ⊢ (((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) ∧ (𝑥 ∈ (Base‘(𝑆 ↑s (𝐵 ↑m 1o))) ∧ 𝑦 ∈ (Base‘(𝑆 ↑s (𝐵 ↑m 1o))))) → (𝑥(.r‘(𝑆 ↑s (𝐵 ↑m 1o)))𝑦) = (𝑥(.r‘(𝑆 ↑s (𝐵 ↑m 1o)))𝑦))
37	21, 22, 26, 22, 30, 31, 35, 36	rhmpropd 20530	. . . 4 ⊢ ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → (𝑊 RingHom (𝑆 ↑s (𝐵 ↑m 1o))) = ((1o mPoly 𝑈) RingHom (𝑆 ↑s (𝐵 ↑m 1o))))
38	20, 37	eleqtrrd 2834	. . 3 ⊢ ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → ((1o evalSub 𝑆)‘𝑅) ∈ (𝑊 RingHom (𝑆 ↑s (𝐵 ↑m 1o))))
39		rhmco 20422	. . 3 ⊢ (((𝑥 ∈ (𝐵 ↑m (𝐵 ↑m 1o)) ↦ (𝑥 ∘ (𝑦 ∈ 𝐵 ↦ (1o × {𝑦})))) ∈ ((𝑆 ↑s (𝐵 ↑m 1o)) RingHom 𝑇) ∧ ((1o evalSub 𝑆)‘𝑅) ∈ (𝑊 RingHom (𝑆 ↑s (𝐵 ↑m 1o)))) → ((𝑥 ∈ (𝐵 ↑m (𝐵 ↑m 1o)) ↦ (𝑥 ∘ (𝑦 ∈ 𝐵 ↦ (1o × {𝑦})))) ∘ ((1o evalSub 𝑆)‘𝑅)) ∈ (𝑊 RingHom 𝑇))
40	13, 38, 39	syl2an2r 685	. 2 ⊢ ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → ((𝑥 ∈ (𝐵 ↑m (𝐵 ↑m 1o)) ↦ (𝑥 ∘ (𝑦 ∈ 𝐵 ↦ (1o × {𝑦})))) ∘ ((1o evalSub 𝑆)‘𝑅)) ∈ (𝑊 RingHom 𝑇))
41	10, 40	eqeltrd 2831	1 ⊢ ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → 𝑄 ∈ (𝑊 RingHom 𝑇))

Syntax hints:   → wi 4   ↔ wb 206   ∧ wa 395   = wceq 1541   ∈ wcel 2111   ⊆ wss 3897  𝒫 cpw 4549  {csn 4575   ↦ cmpt 5174   × cxp 5617   ∘ ccom 5623  Oncon0 6312  ‘cfv 6487  (class class class)co 7352  1_oc1o 8384   ↑_m cmap 8756  Basecbs 17126   ↾_s cress 17147  +_gcplusg 17167  ._rcmulr 17168   ↑_s cpws 17356  CRingccrg 20158   RingHom crh 20393  SubRingcsubrg 20490   mPoly cmpl 21849   evalSub ces 22013  Poly₁cpl1 22095   evalSub₁ ces1 22234

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 2113  ax-9 2121  ax-10 2144  ax-11 2160  ax-12 2180  ax-ext 2703  ax-rep 5219  ax-sep 5236  ax-nul 5246  ax-pow 5305  ax-pr 5372  ax-un 7674  ax-cnex 11068  ax-resscn 11069  ax-1cn 11070  ax-icn 11071  ax-addcl 11072  ax-addrcl 11073  ax-mulcl 11074  ax-mulrcl 11075  ax-mulcom 11076  ax-addass 11077  ax-mulass 11078  ax-distr 11079  ax-i2m1 11080  ax-1ne0 11081  ax-1rid 11082  ax-rnegex 11083  ax-rrecex 11084  ax-cnre 11085  ax-pre-lttri 11086  ax-pre-lttrn 11087  ax-pre-ltadd 11088  ax-pre-mulgt0 11089

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 2535  df-eu 2564  df-clab 2710  df-cleq 2723  df-clel 2806  df-nfc 2881  df-ne 2929  df-nel 3033  df-ral 3048  df-rex 3057  df-rmo 3346  df-reu 3347  df-rab 3396  df-v 3438  df-sbc 3737  df-csb 3846  df-dif 3900  df-un 3902  df-in 3904  df-ss 3914  df-pss 3917  df-nul 4283  df-if 4475  df-pw 4551  df-sn 4576  df-pr 4578  df-tp 4580  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 6254  df-ord 6315  df-on 6316  df-lim 6317  df-suc 6318  df-iota 6443  df-fun 6489  df-fn 6490  df-f 6491  df-f1 6492  df-fo 6493  df-f1o 6494  df-fv 6495  df-isom 6496  df-riota 7309  df-ov 7355  df-oprab 7356  df-mpo 7357  df-of 7616  df-ofr 7617  df-om 7803  df-1st 7927  df-2nd 7928  df-supp 8097  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-pm 8759  df-ixp 8828  df-en 8876  df-dom 8877  df-sdom 8878  df-fin 8879  df-fsupp 9252  df-sup 9332  df-oi 9402  df-card 9838  df-pnf 11154  df-mnf 11155  df-xr 11156  df-ltxr 11157  df-le 11158  df-sub 11352  df-neg 11353  df-nn 12132  df-2 12194  df-3 12195  df-4 12196  df-5 12197  df-6 12198  df-7 12199  df-8 12200  df-9 12201  df-n0 12388  df-z 12475  df-dec 12595  df-uz 12739  df-fz 13414  df-fzo 13561  df-seq 13915  df-hash 14244  df-struct 17064  df-sets 17081  df-slot 17099  df-ndx 17111  df-base 17127  df-ress 17148  df-plusg 17180  df-mulr 17181  df-sca 17183  df-vsca 17184  df-ip 17185  df-tset 17186  df-ple 17187  df-ds 17189  df-hom 17191  df-cco 17192  df-0g 17351  df-gsum 17352  df-prds 17357  df-pws 17359  df-mre 17494  df-mrc 17495  df-acs 17497  df-mgm 18554  df-sgrp 18633  df-mnd 18649  df-mhm 18697  df-submnd 18698  df-grp 18855  df-minusg 18856  df-sbg 18857  df-mulg 18987  df-subg 19042  df-ghm 19131  df-cntz 19235  df-cmn 19700  df-abl 19701  df-mgp 20065  df-rng 20077  df-ur 20106  df-srg 20111  df-ring 20159  df-cring 20160  df-rhm 20396  df-subrng 20467  df-subrg 20491  df-lmod 20801  df-lss 20871  df-lsp 20911  df-assa 21796  df-asp 21797  df-ascl 21798  df-psr 21852  df-mvr 21853  df-mpl 21854  df-opsr 21856  df-evls 22015  df-psr1 22098  df-ply1 22100  df-evls1 22236

This theorem is referenced by:  evls1gsumadd  22245  evls1gsummul  22246  evls1pw  22247  evls1expd  22288  evls1fpws  22290  ressply1evl  22291  evls1fn  33530  evls1dm  33531  evls1fvf  33532  elirng  33706  irngnzply1lem  33710  irngnzply1  33711