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Theorem efsubm 26059

Description: The image of a subgroup of the group +, under the exponential function of a scaled complex number is a submonoid of the multiplicative group of ℂ_fld. (Contributed by Thierry Arnoux, 26-Jan-2020.)

**Hypotheses**
Ref	Expression
efabl.1	⊢ 𝐹 = (𝑥 ∈ 𝑋 ↦ (exp‘(𝐴 · 𝑥)))
efabl.2	⊢ 𝐺 = ((mulGrp‘ℂ_fld) ↾_s ran 𝐹)
efabl.3	⊢ (𝜑 → 𝐴 ∈ ℂ)
efabl.4	⊢ (𝜑 → 𝑋 ∈ (SubGrp‘ℂ_fld))

**Assertion**
Ref	Expression
efsubm	⊢ (𝜑 → ran 𝐹 ∈ (SubMnd‘(mulGrp‘ℂ_fld)))

Distinct variable groups: 𝑥,𝐴 𝑥,𝐹 𝑥,𝐺 𝑥,𝑋 𝜑,𝑥

Proof of Theorem efsubm Dummy variable 𝑦 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		eff 16024	. . . . . 6 ⊢ exp:ℂ⟶ℂ
2	1	a1i 11	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → exp:ℂ⟶ℂ)
3		efabl.3	. . . . . . 7 ⊢ (𝜑 → 𝐴 ∈ ℂ)
4	3	adantr 481	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐴 ∈ ℂ)
5		efabl.4	. . . . . . . 8 ⊢ (𝜑 → 𝑋 ∈ (SubGrp‘ℂ_fld))
6		cnfldbas 20947	. . . . . . . . 9 ⊢ ℂ = (Base‘ℂ_fld)
7	6	subgss 19006	. . . . . . . 8 ⊢ (𝑋 ∈ (SubGrp‘ℂ_fld) → 𝑋 ⊆ ℂ)
8	5, 7	syl 17	. . . . . . 7 ⊢ (𝜑 → 𝑋 ⊆ ℂ)
9	8	sselda 3982	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝑥 ∈ ℂ)
10	4, 9	mulcld 11233	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐴 · 𝑥) ∈ ℂ)
11	2, 10	ffvelcdmd 7087	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (exp‘(𝐴 · 𝑥)) ∈ ℂ)
12	11	ralrimiva 3146	. . 3 ⊢ (𝜑 → ∀𝑥 ∈ 𝑋 (exp‘(𝐴 · 𝑥)) ∈ ℂ)
13		efabl.1	. . . 4 ⊢ 𝐹 = (𝑥 ∈ 𝑋 ↦ (exp‘(𝐴 · 𝑥)))
14	13	rnmptss 7121	. . 3 ⊢ (∀𝑥 ∈ 𝑋 (exp‘(𝐴 · 𝑥)) ∈ ℂ → ran 𝐹 ⊆ ℂ)
15	12, 14	syl 17	. 2 ⊢ (𝜑 → ran 𝐹 ⊆ ℂ)
16	3	mul01d 11412	. . . . 5 ⊢ (𝜑 → (𝐴 · 0) = 0)
17	16	fveq2d 6895	. . . 4 ⊢ (𝜑 → (exp‘(𝐴 · 0)) = (exp‘0))
18		ef0 16033	. . . 4 ⊢ (exp‘0) = 1
19	17, 18	eqtrdi 2788	. . 3 ⊢ (𝜑 → (exp‘(𝐴 · 0)) = 1)
20		cnfld0 20968	. . . . . 6 ⊢ 0 = (0_g‘ℂ_fld)
21	20	subg0cl 19013	. . . . 5 ⊢ (𝑋 ∈ (SubGrp‘ℂ_fld) → 0 ∈ 𝑋)
22	5, 21	syl 17	. . . 4 ⊢ (𝜑 → 0 ∈ 𝑋)
23		fvex 6904	. . . 4 ⊢ (exp‘(𝐴 · 0)) ∈ V
24		oveq2 7416	. . . . . 6 ⊢ (𝑥 = 0 → (𝐴 · 𝑥) = (𝐴 · 0))
25	24	fveq2d 6895	. . . . 5 ⊢ (𝑥 = 0 → (exp‘(𝐴 · 𝑥)) = (exp‘(𝐴 · 0)))
26	13, 25	elrnmpt1s 5956	. . . 4 ⊢ ((0 ∈ 𝑋 ∧ (exp‘(𝐴 · 0)) ∈ V) → (exp‘(𝐴 · 0)) ∈ ran 𝐹)
27	22, 23, 26	sylancl 586	. . 3 ⊢ (𝜑 → (exp‘(𝐴 · 0)) ∈ ran 𝐹)
28	19, 27	eqeltrrd 2834	. 2 ⊢ (𝜑 → 1 ∈ ran 𝐹)
29		efabl.2	. . . . . . . . 9 ⊢ 𝐺 = ((mulGrp‘ℂ_fld) ↾_s ran 𝐹)
30	13, 29, 3, 5	efabl 26058	. . . . . . . 8 ⊢ (𝜑 → 𝐺 ∈ Abel)
31		ablgrp 19652	. . . . . . . 8 ⊢ (𝐺 ∈ Abel → 𝐺 ∈ Grp)
32	30, 31	syl 17	. . . . . . 7 ⊢ (𝜑 → 𝐺 ∈ Grp)
33	32	3ad2ant1 1133	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → 𝐺 ∈ Grp)
34		simp2 1137	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → 𝑥 ∈ ran 𝐹)
35		eqid 2732	. . . . . . . . . . 11 ⊢ (mulGrp‘ℂ_fld) = (mulGrp‘ℂ_fld)
36	35, 6	mgpbas 19992	. . . . . . . . . 10 ⊢ ℂ = (Base‘(mulGrp‘ℂ_fld))
37	29, 36	ressbas2 17181	. . . . . . . . 9 ⊢ (ran 𝐹 ⊆ ℂ → ran 𝐹 = (Base‘𝐺))
38	15, 37	syl 17	. . . . . . . 8 ⊢ (𝜑 → ran 𝐹 = (Base‘𝐺))
39	38	3ad2ant1 1133	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → ran 𝐹 = (Base‘𝐺))
40	34, 39	eleqtrd 2835	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → 𝑥 ∈ (Base‘𝐺))
41		simp3 1138	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → 𝑦 ∈ ran 𝐹)
42	41, 39	eleqtrd 2835	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → 𝑦 ∈ (Base‘𝐺))
43		eqid 2732	. . . . . . 7 ⊢ (Base‘𝐺) = (Base‘𝐺)
44		eqid 2732	. . . . . . 7 ⊢ (+_g‘𝐺) = (+_g‘𝐺)
45	43, 44	grpcl 18826	. . . . . 6 ⊢ ((𝐺 ∈ Grp ∧ 𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺)) → (𝑥(+_g‘𝐺)𝑦) ∈ (Base‘𝐺))
46	33, 40, 42, 45	syl3anc 1371	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → (𝑥(+_g‘𝐺)𝑦) ∈ (Base‘𝐺))
47	5	mptexd 7225	. . . . . . . . 9 ⊢ (𝜑 → (𝑥 ∈ 𝑋 ↦ (exp‘(𝐴 · 𝑥))) ∈ V)
48	13, 47	eqeltrid 2837	. . . . . . . 8 ⊢ (𝜑 → 𝐹 ∈ V)
49		rnexg 7894	. . . . . . . 8 ⊢ (𝐹 ∈ V → ran 𝐹 ∈ V)
50		cnfldmul 20949	. . . . . . . . . 10 ⊢ · = (._r‘ℂ_fld)
51	35, 50	mgpplusg 19990	. . . . . . . . 9 ⊢ · = (+_g‘(mulGrp‘ℂ_fld))
52	29, 51	ressplusg 17234	. . . . . . . 8 ⊢ (ran 𝐹 ∈ V → · = (+_g‘𝐺))
53	48, 49, 52	3syl 18	. . . . . . 7 ⊢ (𝜑 → · = (+_g‘𝐺))
54	53	3ad2ant1 1133	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → · = (+_g‘𝐺))
55	54	oveqd 7425	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → (𝑥 · 𝑦) = (𝑥(+_g‘𝐺)𝑦))
56	46, 55, 39	3eltr4d 2848	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → (𝑥 · 𝑦) ∈ ran 𝐹)
57	56	3expb 1120	. . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹)) → (𝑥 · 𝑦) ∈ ran 𝐹)
58	57	ralrimivva 3200	. 2 ⊢ (𝜑 → ∀𝑥 ∈ ran 𝐹∀𝑦 ∈ ran 𝐹(𝑥 · 𝑦) ∈ ran 𝐹)
59		cnring 20966	. . 3 ⊢ ℂ_fld ∈ Ring
60	35	ringmgp 20061	. . 3 ⊢ (ℂ_fld ∈ Ring → (mulGrp‘ℂ_fld) ∈ Mnd)
61		cnfld1 20969	. . . . 5 ⊢ 1 = (1_r‘ℂ_fld)
62	35, 61	ringidval 20005	. . . 4 ⊢ 1 = (0_g‘(mulGrp‘ℂ_fld))
63	36, 62, 51	issubm 18683	. . 3 ⊢ ((mulGrp‘ℂ_fld) ∈ Mnd → (ran 𝐹 ∈ (SubMnd‘(mulGrp‘ℂ_fld)) ↔ (ran 𝐹 ⊆ ℂ ∧ 1 ∈ ran 𝐹 ∧ ∀𝑥 ∈ ran 𝐹∀𝑦 ∈ ran 𝐹(𝑥 · 𝑦) ∈ ran 𝐹)))
64	59, 60, 63	mp2b 10	. 2 ⊢ (ran 𝐹 ∈ (SubMnd‘(mulGrp‘ℂ_fld)) ↔ (ran 𝐹 ⊆ ℂ ∧ 1 ∈ ran 𝐹 ∧ ∀𝑥 ∈ ran 𝐹∀𝑦 ∈ ran 𝐹(𝑥 · 𝑦) ∈ ran 𝐹))
65	15, 28, 58, 64	syl3anbrc 1343	1 ⊢ (𝜑 → ran 𝐹 ∈ (SubMnd‘(mulGrp‘ℂ_fld)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 ∧ w3a 1087 = wceq 1541 ∈ wcel 2106 ∀wral 3061 Vcvv 3474 ⊆ wss 3948 ↦ cmpt 5231 ran crn 5677 ⟶wf 6539 ‘cfv 6543 (class class class)co 7408 ℂcc 11107 0cc0 11109 1c1 11110 · cmul 11114 expce 16004 Basecbs 17143 ↾_s cress 17172 +_gcplusg 17196 Mndcmnd 18624 SubMndcsubmnd 18669 Grpcgrp 18818 SubGrpcsubg 18999 Abelcabl 19648 mulGrpcmgp 19986 Ringcrg 20055 ℂ_fldccnfld 20943

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 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 2703 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7724 ax-inf2 9635 ax-cnex 11165 ax-resscn 11166 ax-1cn 11167 ax-icn 11168 ax-addcl 11169 ax-addrcl 11170 ax-mulcl 11171 ax-mulrcl 11172 ax-mulcom 11173 ax-addass 11174 ax-mulass 11175 ax-distr 11176 ax-i2m1 11177 ax-1ne0 11178 ax-1rid 11179 ax-rnegex 11180 ax-rrecex 11181 ax-cnre 11182 ax-pre-lttri 11183 ax-pre-lttrn 11184 ax-pre-ltadd 11185 ax-pre-mulgt0 11186 ax-pre-sup 11187 ax-addf 11188 ax-mulf 11189

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-tp 4633 df-op 4635 df-uni 4909 df-int 4951 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-se 5632 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 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 7364 df-ov 7411 df-oprab 7412 df-mpo 7413 df-om 7855 df-1st 7974 df-2nd 7975 df-frecs 8265 df-wrecs 8296 df-recs 8370 df-rdg 8409 df-1o 8465 df-er 8702 df-pm 8822 df-en 8939 df-dom 8940 df-sdom 8941 df-fin 8942 df-sup 9436 df-inf 9437 df-oi 9504 df-card 9933 df-pnf 11249 df-mnf 11250 df-xr 11251 df-ltxr 11252 df-le 11253 df-sub 11445 df-neg 11446 df-div 11871 df-nn 12212 df-2 12274 df-3 12275 df-4 12276 df-5 12277 df-6 12278 df-7 12279 df-8 12280 df-9 12281 df-n0 12472 df-z 12558 df-dec 12677 df-uz 12822 df-rp 12974 df-ico 13329 df-fz 13484 df-fzo 13627 df-fl 13756 df-seq 13966 df-exp 14027 df-fac 14233 df-bc 14262 df-hash 14290 df-shft 15013 df-cj 15045 df-re 15046 df-im 15047 df-sqrt 15181 df-abs 15182 df-limsup 15414 df-clim 15431 df-rlim 15432 df-sum 15632 df-ef 16010 df-struct 17079 df-sets 17096 df-slot 17114 df-ndx 17126 df-base 17144 df-ress 17173 df-plusg 17209 df-mulr 17210 df-starv 17211 df-tset 17215 df-ple 17216 df-ds 17218 df-unif 17219 df-0g 17386 df-mgm 18560 df-sgrp 18609 df-mnd 18625 df-submnd 18671 df-grp 18821 df-minusg 18822 df-subg 19002 df-cmn 19649 df-abl 19650 df-mgp 19987 df-ur 20004 df-ring 20057 df-cring 20058 df-cnfld 20944

This theorem is referenced by: circsubm 26061

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