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Theorem efsubm 26436

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 16029	. . . . . 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 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐴 ∈ ℂ)
5		efabl.4	. . . . . . . 8 ⊢ (𝜑 → 𝑋 ∈ (SubGrp‘ℂ_fld))
6		cnfldbas 21240	. . . . . . . . 9 ⊢ ℂ = (Base‘ℂ_fld)
7	6	subgss 19052	. . . . . . . 8 ⊢ (𝑋 ∈ (SubGrp‘ℂ_fld) → 𝑋 ⊆ ℂ)
8	5, 7	syl 17	. . . . . . 7 ⊢ (𝜑 → 𝑋 ⊆ ℂ)
9	8	sselda 3977	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝑥 ∈ ℂ)
10	4, 9	mulcld 11235	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐴 · 𝑥) ∈ ℂ)
11	2, 10	ffvelcdmd 7080	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (exp‘(𝐴 · 𝑥)) ∈ ℂ)
12	11	ralrimiva 3140	. . 3 ⊢ (𝜑 → ∀𝑥 ∈ 𝑋 (exp‘(𝐴 · 𝑥)) ∈ ℂ)
13		efabl.1	. . . 4 ⊢ 𝐹 = (𝑥 ∈ 𝑋 ↦ (exp‘(𝐴 · 𝑥)))
14	13	rnmptss 7117	. . 3 ⊢ (∀𝑥 ∈ 𝑋 (exp‘(𝐴 · 𝑥)) ∈ ℂ → ran 𝐹 ⊆ ℂ)
15	12, 14	syl 17	. 2 ⊢ (𝜑 → ran 𝐹 ⊆ ℂ)
16	3	mul01d 11414	. . . . 5 ⊢ (𝜑 → (𝐴 · 0) = 0)
17	16	fveq2d 6888	. . . 4 ⊢ (𝜑 → (exp‘(𝐴 · 0)) = (exp‘0))
18		ef0 16039	. . . 4 ⊢ (exp‘0) = 1
19	17, 18	eqtrdi 2782	. . 3 ⊢ (𝜑 → (exp‘(𝐴 · 0)) = 1)
20		cnfld0 21277	. . . . . 6 ⊢ 0 = (0_g‘ℂ_fld)
21	20	subg0cl 19059	. . . . 5 ⊢ (𝑋 ∈ (SubGrp‘ℂ_fld) → 0 ∈ 𝑋)
22	5, 21	syl 17	. . . 4 ⊢ (𝜑 → 0 ∈ 𝑋)
23		fvex 6897	. . . 4 ⊢ (exp‘(𝐴 · 0)) ∈ V
24		oveq2 7412	. . . . . 6 ⊢ (𝑥 = 0 → (𝐴 · 𝑥) = (𝐴 · 0))
25	24	fveq2d 6888	. . . . 5 ⊢ (𝑥 = 0 → (exp‘(𝐴 · 𝑥)) = (exp‘(𝐴 · 0)))
26	13, 25	elrnmpt1s 5949	. . . 4 ⊢ ((0 ∈ 𝑋 ∧ (exp‘(𝐴 · 0)) ∈ V) → (exp‘(𝐴 · 0)) ∈ ran 𝐹)
27	22, 23, 26	sylancl 585	. . 3 ⊢ (𝜑 → (exp‘(𝐴 · 0)) ∈ ran 𝐹)
28	19, 27	eqeltrrd 2828	. 2 ⊢ (𝜑 → 1 ∈ ran 𝐹)
29		efabl.2	. . . . . . . . 9 ⊢ 𝐺 = ((mulGrp‘ℂ_fld) ↾_s ran 𝐹)
30	13, 29, 3, 5	efabl 26435	. . . . . . . 8 ⊢ (𝜑 → 𝐺 ∈ Abel)
31		ablgrp 19703	. . . . . . . 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 2726	. . . . . . . . . . 11 ⊢ (mulGrp‘ℂ_fld) = (mulGrp‘ℂ_fld)
36	35, 6	mgpbas 20043	. . . . . . . . . 10 ⊢ ℂ = (Base‘(mulGrp‘ℂ_fld))
37	29, 36	ressbas2 17189	. . . . . . . . 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 2829	. . . . . 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 2829	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → 𝑦 ∈ (Base‘𝐺))
43		eqid 2726	. . . . . . 7 ⊢ (Base‘𝐺) = (Base‘𝐺)
44		eqid 2726	. . . . . . 7 ⊢ (+_g‘𝐺) = (+_g‘𝐺)
45	43, 44	grpcl 18869	. . . . . 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 7220	. . . . . . . . 9 ⊢ (𝜑 → (𝑥 ∈ 𝑋 ↦ (exp‘(𝐴 · 𝑥))) ∈ V)
48	13, 47	eqeltrid 2831	. . . . . . . 8 ⊢ (𝜑 → 𝐹 ∈ V)
49		rnexg 7891	. . . . . . . 8 ⊢ (𝐹 ∈ V → ran 𝐹 ∈ V)
50		cnfldmul 21244	. . . . . . . . . 10 ⊢ · = (._r‘ℂ_fld)
51	35, 50	mgpplusg 20041	. . . . . . . . 9 ⊢ · = (+_g‘(mulGrp‘ℂ_fld))
52	29, 51	ressplusg 17242	. . . . . . . 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 7421	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ran 𝐹 ∧ 𝑦 ∈ ran 𝐹) → (𝑥 · 𝑦) = (𝑥(+_g‘𝐺)𝑦))
56	46, 55, 39	3eltr4d 2842	. . . 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 3194	. 2 ⊢ (𝜑 → ∀𝑥 ∈ ran 𝐹∀𝑦 ∈ ran 𝐹(𝑥 · 𝑦) ∈ ran 𝐹)
59		cnring 21275	. . 3 ⊢ ℂ_fld ∈ Ring
60	35	ringmgp 20142	. . 3 ⊢ (ℂ_fld ∈ Ring → (mulGrp‘ℂ_fld) ∈ Mnd)
61		cnfld1 21278	. . . . 5 ⊢ 1 = (1_r‘ℂ_fld)
62	35, 61	ringidval 20086	. . . 4 ⊢ 1 = (0_g‘(mulGrp‘ℂ_fld))
63	36, 62, 51	issubm 18726	. . 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 395 ∧ w3a 1084 = wceq 1533 ∈ wcel 2098 ∀wral 3055 Vcvv 3468 ⊆ wss 3943 ↦ cmpt 5224 ran crn 5670 ⟶wf 6532 ‘cfv 6536 (class class class)co 7404 ℂcc 11107 0cc0 11109 1c1 11110 · cmul 11114 expce 16009 Basecbs 17151 ↾_s cress 17180 +_gcplusg 17204 Mndcmnd 18665 SubMndcsubmnd 18710 Grpcgrp 18861 SubGrpcsubg 19045 Abelcabl 19699 mulGrpcmgp 20037 Ringcrg 20136 ℂ_fldccnfld 21236

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 2163 ax-ext 2697 ax-rep 5278 ax-sep 5292 ax-nul 5299 ax-pow 5356 ax-pr 5420 ax-un 7721 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 396 df-or 845 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2704 df-cleq 2718 df-clel 2804 df-nfc 2879 df-ne 2935 df-nel 3041 df-ral 3056 df-rex 3065 df-rmo 3370 df-reu 3371 df-rab 3427 df-v 3470 df-sbc 3773 df-csb 3889 df-dif 3946 df-un 3948 df-in 3950 df-ss 3960 df-pss 3962 df-nul 4318 df-if 4524 df-pw 4599 df-sn 4624 df-pr 4626 df-tp 4628 df-op 4630 df-uni 4903 df-int 4944 df-iun 4992 df-br 5142 df-opab 5204 df-mpt 5225 df-tr 5259 df-id 5567 df-eprel 5573 df-po 5581 df-so 5582 df-fr 5624 df-se 5625 df-we 5626 df-xp 5675 df-rel 5676 df-cnv 5677 df-co 5678 df-dm 5679 df-rn 5680 df-res 5681 df-ima 5682 df-pred 6293 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6488 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-isom 6545 df-riota 7360 df-ov 7407 df-oprab 7408 df-mpo 7409 df-om 7852 df-1st 7971 df-2nd 7972 df-frecs 8264 df-wrecs 8295 df-recs 8369 df-rdg 8408 df-1o 8464 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 11251 df-mnf 11252 df-xr 11253 df-ltxr 11254 df-le 11255 df-sub 11447 df-neg 11448 df-div 11873 df-nn 12214 df-2 12276 df-3 12277 df-4 12278 df-5 12279 df-6 12280 df-7 12281 df-8 12282 df-9 12283 df-n0 12474 df-z 12560 df-dec 12679 df-uz 12824 df-rp 12978 df-ico 13333 df-fz 13488 df-fzo 13631 df-fl 13760 df-seq 13970 df-exp 14031 df-fac 14237 df-bc 14266 df-hash 14294 df-shft 15018 df-cj 15050 df-re 15051 df-im 15052 df-sqrt 15186 df-abs 15187 df-limsup 15419 df-clim 15436 df-rlim 15437 df-sum 15637 df-ef 16015 df-struct 17087 df-sets 17104 df-slot 17122 df-ndx 17134 df-base 17152 df-ress 17181 df-plusg 17217 df-mulr 17218 df-starv 17219 df-tset 17223 df-ple 17224 df-ds 17226 df-unif 17227 df-0g 17394 df-mgm 18571 df-sgrp 18650 df-mnd 18666 df-submnd 18712 df-grp 18864 df-minusg 18865 df-subg 19048 df-cmn 19700 df-abl 19701 df-mgp 20038 df-ur 20085 df-ring 20138 df-cring 20139 df-cnfld 21237

This theorem is referenced by: circsubm 26438

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