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Theorem efsubm 26503

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 16063	. . . . . 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 479	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐴 ∈ ℂ)
5		efabl.4	. . . . . . . 8 ⊢ (𝜑 → 𝑋 ∈ (SubGrp‘ℂ_fld))
6		cnfldbas 21288	. . . . . . . . 9 ⊢ ℂ = (Base‘ℂ_fld)
7	6	subgss 19087	. . . . . . . 8 ⊢ (𝑋 ∈ (SubGrp‘ℂ_fld) → 𝑋 ⊆ ℂ)
8	5, 7	syl 17	. . . . . . 7 ⊢ (𝜑 → 𝑋 ⊆ ℂ)
9	8	sselda 3980	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝑥 ∈ ℂ)
10	4, 9	mulcld 11270	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐴 · 𝑥) ∈ ℂ)
11	2, 10	ffvelcdmd 7098	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (exp‘(𝐴 · 𝑥)) ∈ ℂ)
12	11	ralrimiva 3142	. . 3 ⊢ (𝜑 → ∀𝑥 ∈ 𝑋 (exp‘(𝐴 · 𝑥)) ∈ ℂ)
13		efabl.1	. . . 4 ⊢ 𝐹 = (𝑥 ∈ 𝑋 ↦ (exp‘(𝐴 · 𝑥)))
14	13	rnmptss 7136	. . 3 ⊢ (∀𝑥 ∈ 𝑋 (exp‘(𝐴 · 𝑥)) ∈ ℂ → ran 𝐹 ⊆ ℂ)
15	12, 14	syl 17	. 2 ⊢ (𝜑 → ran 𝐹 ⊆ ℂ)
16	3	mul01d 11449	. . . . 5 ⊢ (𝜑 → (𝐴 · 0) = 0)
17	16	fveq2d 6904	. . . 4 ⊢ (𝜑 → (exp‘(𝐴 · 0)) = (exp‘0))
18		ef0 16073	. . . 4 ⊢ (exp‘0) = 1
19	17, 18	eqtrdi 2783	. . 3 ⊢ (𝜑 → (exp‘(𝐴 · 0)) = 1)
20		cnfld0 21325	. . . . . 6 ⊢ 0 = (0_g‘ℂ_fld)
21	20	subg0cl 19094	. . . . 5 ⊢ (𝑋 ∈ (SubGrp‘ℂ_fld) → 0 ∈ 𝑋)
22	5, 21	syl 17	. . . 4 ⊢ (𝜑 → 0 ∈ 𝑋)
23		fvex 6913	. . . 4 ⊢ (exp‘(𝐴 · 0)) ∈ V
24		oveq2 7432	. . . . . 6 ⊢ (𝑥 = 0 → (𝐴 · 𝑥) = (𝐴 · 0))
25	24	fveq2d 6904	. . . . 5 ⊢ (𝑥 = 0 → (exp‘(𝐴 · 𝑥)) = (exp‘(𝐴 · 0)))
26	13, 25	elrnmpt1s 5961	. . . 4 ⊢ ((0 ∈ 𝑋 ∧ (exp‘(𝐴 · 0)) ∈ V) → (exp‘(𝐴 · 0)) ∈ ran 𝐹)
27	22, 23, 26	sylancl 584	. . 3 ⊢ (𝜑 → (exp‘(𝐴 · 0)) ∈ ran 𝐹)
28	19, 27	eqeltrrd 2829	. 2 ⊢ (𝜑 → 1 ∈ ran 𝐹)
29		efabl.2	. . . . . . . . 9 ⊢ 𝐺 = ((mulGrp‘ℂ_fld) ↾_s ran 𝐹)
30	13, 29, 3, 5	efabl 26502	. . . . . . . 8 ⊢ (𝜑 → 𝐺 ∈ Abel)
31		ablgrp 19745	. . . . . . . 8 ⊢ (𝐺 ∈ Abel → 𝐺 ∈ Grp)
32	30, 31	syl 17	. . . . . . 7 ⊢ (𝜑 → 𝐺 ∈ Grp)
33	32	3ad2ant1 1130	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → 𝐺 ∈ Grp)
34		simp2 1134	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → 𝑥 ∈ ran 𝐹)
35		eqid 2727	. . . . . . . . . . 11 ⊢ (mulGrp‘ℂ_fld) = (mulGrp‘ℂ_fld)
36	35, 6	mgpbas 20085	. . . . . . . . . 10 ⊢ ℂ = (Base‘(mulGrp‘ℂ_fld))
37	29, 36	ressbas2 17223	. . . . . . . . 9 ⊢ (ran 𝐹 ⊆ ℂ → ran 𝐹 = (Base‘𝐺))
38	15, 37	syl 17	. . . . . . . 8 ⊢ (𝜑 → ran 𝐹 = (Base‘𝐺))
39	38	3ad2ant1 1130	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → ran 𝐹 = (Base‘𝐺))
40	34, 39	eleqtrd 2830	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → 𝑥 ∈ (Base‘𝐺))
41		simp3 1135	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → 𝑦 ∈ ran 𝐹)
42	41, 39	eleqtrd 2830	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → 𝑦 ∈ (Base‘𝐺))
43		eqid 2727	. . . . . . 7 ⊢ (Base‘𝐺) = (Base‘𝐺)
44		eqid 2727	. . . . . . 7 ⊢ (+_g‘𝐺) = (+_g‘𝐺)
45	43, 44	grpcl 18903	. . . . . 6 ⊢ ((𝐺 ∈ Grp ∧ 𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺)) → (𝑥(+_g‘𝐺)𝑦) ∈ (Base‘𝐺))
46	33, 40, 42, 45	syl3anc 1368	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → (𝑥(+_g‘𝐺)𝑦) ∈ (Base‘𝐺))
47	5	mptexd 7240	. . . . . . . . 9 ⊢ (𝜑 → (𝑥 ∈ 𝑋 ↦ (exp‘(𝐴 · 𝑥))) ∈ V)
48	13, 47	eqeltrid 2832	. . . . . . . 8 ⊢ (𝜑 → 𝐹 ∈ V)
49		rnexg 7914	. . . . . . . 8 ⊢ (𝐹 ∈ V → ran 𝐹 ∈ V)
50		cnfldmul 21292	. . . . . . . . . 10 ⊢ · = (._r‘ℂ_fld)
51	35, 50	mgpplusg 20083	. . . . . . . . 9 ⊢ · = (+_g‘(mulGrp‘ℂ_fld))
52	29, 51	ressplusg 17276	. . . . . . . 8 ⊢ (ran 𝐹 ∈ V → · = (+_g‘𝐺))
53	48, 49, 52	3syl 18	. . . . . . 7 ⊢ (𝜑 → · = (+_g‘𝐺))
54	53	3ad2ant1 1130	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → · = (+_g‘𝐺))
55	54	oveqd 7441	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → (𝑥 · 𝑦) = (𝑥(+_g‘𝐺)𝑦))
56	46, 55, 39	3eltr4d 2843	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → (𝑥 · 𝑦) ∈ ran 𝐹)
57	56	3expb 1117	. . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹)) → (𝑥 · 𝑦) ∈ ran 𝐹)
58	57	ralrimivva 3196	. 2 ⊢ (𝜑 → ∀𝑥 ∈ ran 𝐹∀𝑦 ∈ ran 𝐹(𝑥 · 𝑦) ∈ ran 𝐹)
59		cnring 21323	. . 3 ⊢ ℂ_fld ∈ Ring
60	35	ringmgp 20184	. . 3 ⊢ (ℂ_fld ∈ Ring → (mulGrp‘ℂ_fld) ∈ Mnd)
61		cnfld1 21326	. . . . 5 ⊢ 1 = (1_r‘ℂ_fld)
62	35, 61	ringidval 20128	. . . 4 ⊢ 1 = (0_g‘(mulGrp‘ℂ_fld))
63	36, 62, 51	issubm 18760	. . 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 1340	1 ⊢ (𝜑 → ran 𝐹 ∈ (SubMnd‘(mulGrp‘ℂ_fld)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 394 ∧ w3a 1084 = wceq 1533 ∈ wcel 2098 ∀wral 3057 Vcvv 3471 ⊆ wss 3947 ↦ cmpt 5233 ran crn 5681 ⟶wf 6547 ‘cfv 6551 (class class class)co 7424 ℂcc 11142 0cc0 11144 1c1 11145 · cmul 11149 expce 16043 Basecbs 17185 ↾_s cress 17214 +_gcplusg 17238 Mndcmnd 18699 SubMndcsubmnd 18744 Grpcgrp 18895 SubGrpcsubg 19080 Abelcabl 19741 mulGrpcmgp 20079 Ringcrg 20178 ℂ_fldccnfld 21284

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2166 ax-ext 2698 ax-rep 5287 ax-sep 5301 ax-nul 5308 ax-pow 5367 ax-pr 5431 ax-un 7744 ax-inf2 9670 ax-cnex 11200 ax-resscn 11201 ax-1cn 11202 ax-icn 11203 ax-addcl 11204 ax-addrcl 11205 ax-mulcl 11206 ax-mulrcl 11207 ax-mulcom 11208 ax-addass 11209 ax-mulass 11210 ax-distr 11211 ax-i2m1 11212 ax-1ne0 11213 ax-1rid 11214 ax-rnegex 11215 ax-rrecex 11216 ax-cnre 11217 ax-pre-lttri 11218 ax-pre-lttrn 11219 ax-pre-ltadd 11220 ax-pre-mulgt0 11221 ax-pre-sup 11222 ax-addf 11223 ax-mulf 11224

This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2529 df-eu 2558 df-clab 2705 df-cleq 2719 df-clel 2805 df-nfc 2880 df-ne 2937 df-nel 3043 df-ral 3058 df-rex 3067 df-rmo 3372 df-reu 3373 df-rab 3429 df-v 3473 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4325 df-if 4531 df-pw 4606 df-sn 4631 df-pr 4633 df-tp 4635 df-op 4637 df-uni 4911 df-int 4952 df-iun 5000 df-br 5151 df-opab 5213 df-mpt 5234 df-tr 5268 df-id 5578 df-eprel 5584 df-po 5592 df-so 5593 df-fr 5635 df-se 5636 df-we 5637 df-xp 5686 df-rel 5687 df-cnv 5688 df-co 5689 df-dm 5690 df-rn 5691 df-res 5692 df-ima 5693 df-pred 6308 df-ord 6375 df-on 6376 df-lim 6377 df-suc 6378 df-iota 6503 df-fun 6553 df-fn 6554 df-f 6555 df-f1 6556 df-fo 6557 df-f1o 6558 df-fv 6559 df-isom 6560 df-riota 7380 df-ov 7427 df-oprab 7428 df-mpo 7429 df-om 7875 df-1st 7997 df-2nd 7998 df-frecs 8291 df-wrecs 8322 df-recs 8396 df-rdg 8435 df-1o 8491 df-er 8729 df-pm 8852 df-en 8969 df-dom 8970 df-sdom 8971 df-fin 8972 df-sup 9471 df-inf 9472 df-oi 9539 df-card 9968 df-pnf 11286 df-mnf 11287 df-xr 11288 df-ltxr 11289 df-le 11290 df-sub 11482 df-neg 11483 df-div 11908 df-nn 12249 df-2 12311 df-3 12312 df-4 12313 df-5 12314 df-6 12315 df-7 12316 df-8 12317 df-9 12318 df-n0 12509 df-z 12595 df-dec 12714 df-uz 12859 df-rp 13013 df-ico 13368 df-fz 13523 df-fzo 13666 df-fl 13795 df-seq 14005 df-exp 14065 df-fac 14271 df-bc 14300 df-hash 14328 df-shft 15052 df-cj 15084 df-re 15085 df-im 15086 df-sqrt 15220 df-abs 15221 df-limsup 15453 df-clim 15470 df-rlim 15471 df-sum 15671 df-ef 16049 df-struct 17121 df-sets 17138 df-slot 17156 df-ndx 17168 df-base 17186 df-ress 17215 df-plusg 17251 df-mulr 17252 df-starv 17253 df-tset 17257 df-ple 17258 df-ds 17260 df-unif 17261 df-0g 17428 df-mgm 18605 df-sgrp 18684 df-mnd 18700 df-submnd 18746 df-grp 18898 df-minusg 18899 df-subg 19083 df-cmn 19742 df-abl 19743 df-mgp 20080 df-ur 20127 df-ring 20180 df-cring 20181 df-cnfld 21285

This theorem is referenced by: circsubm 26505

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