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Theorem cayhamlem2 22931

Description: Lemma for cayhamlem3 22934. (Contributed by AV, 24-Nov-2019.)

**Hypotheses**
Ref	Expression
cayhamlem2.k	⊢ 𝐾 = (Base‘𝑅)
cayhamlem2.a	⊢ 𝐴 = (𝑁 Mat 𝑅)
cayhamlem2.b	⊢ 𝐵 = (Base‘𝐴)
cayhamlem2.1	⊢ 1 = (1_r‘𝐴)
cayhamlem2.m	⊢ ∗ = ( ·_𝑠 ‘𝐴)
cayhamlem2.e	⊢ ↑ = (._g‘(mulGrp‘𝐴))
cayhamlem2.r	⊢ · = (._r‘𝐴)

**Assertion**
Ref	Expression
cayhamlem2	⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑀 ∈ 𝐵) ∧ (𝐻 ∈ (𝐾 ↑_m ℕ₀) ∧ 𝐿 ∈ ℕ₀)) → ((𝐻‘𝐿) ∗ (𝐿 ↑ 𝑀)) = ((𝐿 ↑ 𝑀) · ((𝐻‘𝐿) ∗ 1 )))

**Proof of Theorem cayhamlem2**
Step	Hyp	Ref	Expression
1		elmapi 8823	. . . . . . . 8 ⊢ (𝐻 ∈ (𝐾 ↑_m ℕ₀) → 𝐻:ℕ₀⟶𝐾)
2	1	ffvelcdmda 7059	. . . . . . 7 ⊢ ((𝐻 ∈ (𝐾 ↑_m ℕ₀) ∧ 𝐿 ∈ ℕ₀) → (𝐻‘𝐿) ∈ 𝐾)
3	2	adantl 485	. . . . . 6 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑀 ∈ 𝐵) ∧ (𝐻 ∈ (𝐾 ↑_m ℕ₀) ∧ 𝐿 ∈ ℕ₀)) → (𝐻‘𝐿) ∈ 𝐾)
4		cayhamlem2.k	. . . . . . . . 9 ⊢ 𝐾 = (Base‘𝑅)
5		cayhamlem2.a	. . . . . . . . . . . 12 ⊢ 𝐴 = (𝑁 Mat 𝑅)
6	5	matsca2 22467	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → 𝑅 = (Scalar‘𝐴))
7	6	3adant3 1144	. . . . . . . . . 10 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑀 ∈ 𝐵) → 𝑅 = (Scalar‘𝐴))
8	7	fveq2d 6865	. . . . . . . . 9 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑀 ∈ 𝐵) → (Base‘𝑅) = (Base‘(Scalar‘𝐴)))
9	4, 8	eqtr2id 2809	. . . . . . . 8 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑀 ∈ 𝐵) → (Base‘(Scalar‘𝐴)) = 𝐾)
10	9	eleq2d 2847	. . . . . . 7 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑀 ∈ 𝐵) → ((𝐻‘𝐿) ∈ (Base‘(Scalar‘𝐴)) ↔ (𝐻‘𝐿) ∈ 𝐾))
11	10	adantr 484	. . . . . 6 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑀 ∈ 𝐵) ∧ (𝐻 ∈ (𝐾 ↑_m ℕ₀) ∧ 𝐿 ∈ ℕ₀)) → ((𝐻‘𝐿) ∈ (Base‘(Scalar‘𝐴)) ↔ (𝐻‘𝐿) ∈ 𝐾))
12	3, 11	mpbird 259	. . . . 5 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑀 ∈ 𝐵) ∧ (𝐻 ∈ (𝐾 ↑_m ℕ₀) ∧ 𝐿 ∈ ℕ₀)) → (𝐻‘𝐿) ∈ (Base‘(Scalar‘𝐴)))
13		eqid 2761	. . . . . 6 ⊢ (algSc‘𝐴) = (algSc‘𝐴)
14		eqid 2761	. . . . . 6 ⊢ (Scalar‘𝐴) = (Scalar‘𝐴)
15		eqid 2761	. . . . . 6 ⊢ (Base‘(Scalar‘𝐴)) = (Base‘(Scalar‘𝐴))
16		cayhamlem2.m	. . . . . 6 ⊢ ∗ = ( ·_𝑠 ‘𝐴)
17		cayhamlem2.1	. . . . . 6 ⊢ 1 = (1_r‘𝐴)
18	13, 14, 15, 16, 17	asclval 21918	. . . . 5 ⊢ ((𝐻‘𝐿) ∈ (Base‘(Scalar‘𝐴)) → ((algSc‘𝐴)‘(𝐻‘𝐿)) = ((𝐻‘𝐿) ∗ 1 ))
19	12, 18	syl 17	. . . 4 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑀 ∈ 𝐵) ∧ (𝐻 ∈ (𝐾 ↑_m ℕ₀) ∧ 𝐿 ∈ ℕ₀)) → ((algSc‘𝐴)‘(𝐻‘𝐿)) = ((𝐻‘𝐿) ∗ 1 ))
20	19	eqcomd 2767	. . 3 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑀 ∈ 𝐵) ∧ (𝐻 ∈ (𝐾 ↑_m ℕ₀) ∧ 𝐿 ∈ ℕ₀)) → ((𝐻‘𝐿) ∗ 1 ) = ((algSc‘𝐴)‘(𝐻‘𝐿)))
21	20	oveq2d 7406	. 2 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑀 ∈ 𝐵) ∧ (𝐻 ∈ (𝐾 ↑_m ℕ₀) ∧ 𝐿 ∈ ℕ₀)) → ((𝐿 ↑ 𝑀) · ((𝐻‘𝐿) ∗ 1 )) = ((𝐿 ↑ 𝑀) · ((algSc‘𝐴)‘(𝐻‘𝐿))))
22	5	matassa 22491	. . . . 5 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → 𝐴 ∈ AssAlg)
23	22	3adant3 1144	. . . 4 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑀 ∈ 𝐵) → 𝐴 ∈ AssAlg)
24	23	adantr 484	. . 3 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑀 ∈ 𝐵) ∧ (𝐻 ∈ (𝐾 ↑_m ℕ₀) ∧ 𝐿 ∈ ℕ₀)) → 𝐴 ∈ AssAlg)
25		eqid 2761	. . . . 5 ⊢ (mulGrp‘𝐴) = (mulGrp‘𝐴)
26		cayhamlem2.b	. . . . 5 ⊢ 𝐵 = (Base‘𝐴)
27	25, 26	mgpbas 20181	. . . 4 ⊢ 𝐵 = (Base‘(mulGrp‘𝐴))
28		cayhamlem2.e	. . . 4 ⊢ ↑ = (._g‘(mulGrp‘𝐴))
29		crngring 20281	. . . . . . . 8 ⊢ (𝑅 ∈ CRing → 𝑅 ∈ Ring)
30	29	anim2i 626	. . . . . . 7 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → (𝑁 ∈ Fin ∧ 𝑅 ∈ Ring))
31	30	3adant3 1144	. . . . . 6 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑀 ∈ 𝐵) → (𝑁 ∈ Fin ∧ 𝑅 ∈ Ring))
32	5	matring 22490	. . . . . 6 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring) → 𝐴 ∈ Ring)
33	25	ringmgp 20275	. . . . . 6 ⊢ (𝐴 ∈ Ring → (mulGrp‘𝐴) ∈ Mnd)
34	31, 32, 33	3syl 18	. . . . 5 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑀 ∈ 𝐵) → (mulGrp‘𝐴) ∈ Mnd)
35	34	adantr 484	. . . 4 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑀 ∈ 𝐵) ∧ (𝐻 ∈ (𝐾 ↑_m ℕ₀) ∧ 𝐿 ∈ ℕ₀)) → (mulGrp‘𝐴) ∈ Mnd)
36		simprr 782	. . . 4 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑀 ∈ 𝐵) ∧ (𝐻 ∈ (𝐾 ↑_m ℕ₀) ∧ 𝐿 ∈ ℕ₀)) → 𝐿 ∈ ℕ₀)
37		simpl3 1206	. . . 4 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑀 ∈ 𝐵) ∧ (𝐻 ∈ (𝐾 ↑_m ℕ₀) ∧ 𝐿 ∈ ℕ₀)) → 𝑀 ∈ 𝐵)
38	27, 28, 35, 36, 37	mulgnn0cld 19127	. . 3 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑀 ∈ 𝐵) ∧ (𝐻 ∈ (𝐾 ↑_m ℕ₀) ∧ 𝐿 ∈ ℕ₀)) → (𝐿 ↑ 𝑀) ∈ 𝐵)
39		cayhamlem2.r	. . . 4 ⊢ · = (._r‘𝐴)
40	13, 14, 15, 26, 39, 16	asclmul2 21926	. . 3 ⊢ ((𝐴 ∈ AssAlg ∧ (𝐻‘𝐿) ∈ (Base‘(Scalar‘𝐴)) ∧ (𝐿 ↑ 𝑀) ∈ 𝐵) → ((𝐿 ↑ 𝑀) · ((algSc‘𝐴)‘(𝐻‘𝐿))) = ((𝐻‘𝐿) ∗ (𝐿 ↑ 𝑀)))
41	24, 12, 38, 40	syl3anc 1389	. 2 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑀 ∈ 𝐵) ∧ (𝐻 ∈ (𝐾 ↑_m ℕ₀) ∧ 𝐿 ∈ ℕ₀)) → ((𝐿 ↑ 𝑀) · ((algSc‘𝐴)‘(𝐻‘𝐿))) = ((𝐻‘𝐿) ∗ (𝐿 ↑ 𝑀)))
42	21, 41	eqtr2d 2797	1 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑀 ∈ 𝐵) ∧ (𝐻 ∈ (𝐾 ↑_m ℕ₀) ∧ 𝐿 ∈ ℕ₀)) → ((𝐻‘𝐿) ∗ (𝐿 ↑ 𝑀)) = ((𝐿 ↑ 𝑀) · ((𝐻‘𝐿) ∗ 1 )))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 208 ∧ wa 399 ∧ w3a 1097 = wceq 1559 ∈ wcel 2141 ‘cfv 6515 (class class class)co 7390 ↑_m cmap 8801 Fincfn 8920 ℕ₀cn0 12474 Basecbs 17235 ._rcmulr 17277 Scalarcsca 17279 ·_𝑠 cvsca 17280 Mndcmnd 18758 ._gcmg 19099 mulGrpcmgp 20176 1_rcur 20217 Ringcrg 20269 CRingccrg 20270 AssAlgcasa 21889 algSccascl 21891 Mat cmat 22454

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-rep 5224 ax-sep 5243 ax-nul 5253 ax-pow 5319 ax-pr 5387 ax-un 7712 ax-cnex 11122 ax-resscn 11123 ax-1cn 11124 ax-icn 11125 ax-addcl 11126 ax-addrcl 11127 ax-mulcl 11128 ax-mulrcl 11129 ax-mulcom 11130 ax-addass 11131 ax-mulass 11132 ax-distr 11133 ax-i2m1 11134 ax-1ne0 11135 ax-1rid 11136 ax-rnegex 11137 ax-rrecex 11138 ax-cnre 11139 ax-pre-lttri 11140 ax-pre-lttrn 11141 ax-pre-ltadd 11142 ax-pre-mulgt0 11143

This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1098 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3061 df-ral 3076 df-rex 3086 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4580 df-pr 4582 df-tp 4584 df-op 4586 df-ot 4588 df-uni 4863 df-int 4903 df-iun 4948 df-iin 4949 df-br 5098 df-opab 5160 df-mpt 5179 df-tr 5205 df-id 5538 df-eprel 5543 df-po 5551 df-so 5552 df-fr 5596 df-se 5597 df-we 5598 df-xp 5649 df-rel 5650 df-cnv 5651 df-co 5652 df-dm 5653 df-rn 5654 df-res 5655 df-ima 5656 df-pred 6282 df-ord 6343 df-on 6344 df-lim 6345 df-suc 6346 df-iota 6471 df-fun 6517 df-fn 6518 df-f 6519 df-f1 6520 df-fo 6521 df-f1o 6522 df-fv 6523 df-isom 6524 df-riota 7347 df-ov 7393 df-oprab 7394 df-mpo 7395 df-of 7654 df-om 7841 df-1st 7964 df-2nd 7965 df-supp 8134 df-frecs 8255 df-wrecs 8286 df-recs 8335 df-rdg 8374 df-1o 8430 df-2o 8431 df-er 8671 df-map 8803 df-ixp 8873 df-en 8921 df-dom 8922 df-sdom 8923 df-fin 8924 df-fsupp 9301 df-sup 9381 df-oi 9451 df-card 9890 df-pnf 11211 df-mnf 11212 df-xr 11213 df-ltxr 11214 df-le 11215 df-sub 11409 df-neg 11410 df-nn 12204 df-2 12273 df-3 12274 df-4 12275 df-5 12276 df-6 12277 df-7 12278 df-8 12279 df-9 12280 df-n0 12475 df-z 12562 df-dec 12682 df-uz 12833 df-fz 13506 df-fzo 13653 df-seq 14008 df-hash 14337 df-struct 17173 df-sets 17190 df-slot 17208 df-ndx 17220 df-base 17236 df-ress 17257 df-plusg 17289 df-mulr 17290 df-sca 17292 df-vsca 17293 df-ip 17294 df-tset 17295 df-ple 17296 df-ds 17298 df-hom 17300 df-cco 17301 df-0g 17460 df-gsum 17461 df-prds 17466 df-pws 17468 df-mre 17604 df-mrc 17605 df-acs 17607 df-mgm 18664 df-sgrp 18743 df-mnd 18759 df-mhm 18807 df-submnd 18808 df-grp 18968 df-minusg 18969 df-sbg 18970 df-mulg 19100 df-subg 19155 df-ghm 19244 df-cntz 19347 df-cmn 19812 df-abl 19813 df-mgp 20177 df-rng 20189 df-ur 20218 df-ring 20271 df-cring 20272 df-subrg 20606 df-lmod 20916 df-lss 20986 df-sra 21227 df-rgmod 21228 df-dsmm 21771 df-frlm 21786 df-assa 21892 df-ascl 21894 df-mamu 22438 df-mat 22455

This theorem is referenced by: cayhamlem3 22934

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