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Related theorems GIF version |
| Description: The circle group T is an Abelian group. (Contributed by Paul Chapman, 25-Mar-2008.) |
| Ref | Expression |
|---|---|
| circgrp.1 | ⊢ C = {w ∈ ℂ∣(abs ‘w) = 1} |
| circgrp.2 | ⊢ T = ( · ↾ (C × C)) |
| Ref | Expression |
|---|---|
| circgrp | ⊢ T ∈ Abel |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fveq2 3709 | . . . . . . . . 9 ⊢ (w = z → (abs ‘w) = (abs ‘z)) | |
| 2 | 1 | eqeq1d 1475 | . . . . . . . 8 ⊢ (w = z → ((abs ‘w) = 1 ↔ (abs ‘z) = 1)) |
| 3 | circgrp.1 | . . . . . . . 8 ⊢ C = {w ∈ ℂ∣(abs ‘w) = 1} | |
| 4 | 2, 3 | elrab2 1898 | . . . . . . 7 ⊢ (z ∈ C ↔ (z ∈ ℂ ⋀ (abs ‘z) = 1)) |
| 5 | efifolem7 8643 | . . . . . . 7 ⊢ ((z ∈ ℂ ⋀ (abs ‘z) = 1) → ∃x ∈ (0[,)(2 · π))z = (exp ‘(i · x))) | |
| 6 | 4, 5 | sylbi 199 | . . . . . 6 ⊢ (z ∈ C → ∃x ∈ (0[,)(2 · π))z = (exp ‘(i · x))) |
| 7 | 0re 5412 | . . . . . . . . . . 11 ⊢ 0 ∈ ℝ | |
| 8 | 2re 5926 | . . . . . . . . . . . 12 ⊢ 2 ∈ ℝ | |
| 9 | pire 8596 | . . . . . . . . . . . 12 ⊢ π ∈ ℝ | |
| 10 | 8, 9 | remulcl 5307 | . . . . . . . . . . 11 ⊢ (2 · π) ∈ ℝ |
| 11 | elico2t 6323 | . . . . . . . . . . 11 ⊢ ((0 ∈ ℝ ⋀ (2 · π) ∈ ℝ) → (x ∈ (0[,)(2 · π)) ↔ (x ∈ ℝ ⋀ 0 ≤ x ⋀ x < (2 · π)))) | |
| 12 | 7, 10, 11 | mp2an 695 | . . . . . . . . . 10 ⊢ (x ∈ (0[,)(2 · π)) ↔ (x ∈ ℝ ⋀ 0 ≤ x ⋀ x < (2 · π))) |
| 13 | 12 | biimp 151 | . . . . . . . . 9 ⊢ (x ∈ (0[,)(2 · π)) → (x ∈ ℝ ⋀ 0 ≤ x ⋀ x < (2 · π))) |
| 14 | 13 | 3simp1d 792 | . . . . . . . 8 ⊢ (x ∈ (0[,)(2 · π)) → x ∈ ℝ) |
| 15 | 14 | anim1i 334 | . . . . . . 7 ⊢ ((x ∈ (0[,)(2 · π)) ⋀ z = (exp ‘(i · x))) → (x ∈ ℝ ⋀ z = (exp ‘(i · x)))) |
| 16 | 15 | r19.22i2 1725 | . . . . . 6 ⊢ (∃x ∈ (0[,)(2 · π))z = (exp ‘(i · x)) → ∃x ∈ ℝ z = (exp ‘(i · x))) |
| 17 | 6, 16 | syl 10 | . . . . 5 ⊢ (z ∈ C → ∃x ∈ ℝ z = (exp ‘(i · x))) |
| 18 | visset 1804 | . . . . . 6 ⊢ z ∈ V | |
| 19 | eqeq1 1473 | . . . . . . 7 ⊢ (y = z → (y = (exp ‘(i · x)) ↔ z = (exp ‘(i · x)))) | |
| 20 | 19 | rexbidv 1656 | . . . . . 6 ⊢ (y = z → (∃x ∈ ℝ y = (exp ‘(i · x)) ↔ ∃x ∈ ℝ z = (exp ‘(i · x)))) |
| 21 | 18, 20 | elab 1888 | . . . . 5 ⊢ (z ∈ {y∣∃x ∈ ℝ y = (exp ‘(i · x))} ↔ ∃x ∈ ℝ z = (exp ‘(i · x))) |
| 22 | 17, 21 | sylibr 200 | . . . 4 ⊢ (z ∈ C → z ∈ {y∣∃x ∈ ℝ y = (exp ‘(i · x))}) |
| 23 | eleq1 1526 | . . . . . . 7 ⊢ (z = (exp ‘(i · x)) → (z ∈ C ↔ (exp ‘(i · x)) ∈ C)) | |
| 24 | 3 | efielcirc 8659 | . . . . . . 7 ⊢ (x ∈ ℝ → (exp ‘(i · x)) ∈ C) |
| 25 | 23, 24 | syl5cbir 211 | . . . . . 6 ⊢ (x ∈ ℝ → (z = (exp ‘(i · x)) → z ∈ C)) |
| 26 | 25 | r19.23aiv 1735 | . . . . 5 ⊢ (∃x ∈ ℝ z = (exp ‘(i · x)) → z ∈ C) |
| 27 | 21, 26 | sylbi 199 | . . . 4 ⊢ (z ∈ {y∣∃x ∈ ℝ y = (exp ‘(i · x))} → z ∈ C) |
| 28 | 22, 27 | impbi 157 | . . 3 ⊢ (z ∈ C ↔ z ∈ {y∣∃x ∈ ℝ y = (exp ‘(i · x))}) |
| 29 | 28 | eqriv 1467 | . 2 ⊢ C = {y∣∃x ∈ ℝ y = (exp ‘(i · x))} |
| 30 | circgrp.2 | . 2 ⊢ T = ( · ↾ (C × C)) | |
| 31 | axicn 5242 | . 2 ⊢ i ∈ ℂ | |
| 32 | axresscn 5240 | . 2 ⊢ ℝ ⊆ ℂ | |
| 33 | readdsubg 8066 | . 2 ⊢ ( + ↾ (ℝ × ℝ)) ∈ (SubGrp ‘ + ) | |
| 34 | 29, 30, 31, 32, 33 | efghgrpi 8635 | 1 ⊢ T ∈ Abel |
| Colors of variables: wff set class |
| Syntax hints: ↔ wb 146 ⋀ wa 223 ⋀ w3a 773 = wceq 953 ∈ wcel 955 {cab 1456 ∃wrex 1638 {crab 1640 class class class wbr 2609 × cxp 3158 ↾ cres 3162 ‘cfv 3172 (class class class)co 3948 ℂcc 5204 ℝcr 5205 0cc0 5206 1c1 5207 ici 5208 · cmul 5211 ≤ cle 5267 < clt 5458 2c2 5908 [,)cico 6296 abscabs 6681 expce 7235 πcpi 7239 Abelcabl 8035 |
| This theorem is referenced by: shftefif1olem 8661 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 959 ax-gen 960 ax-8 961 ax-9 962 ax-10 963 ax-11 964 ax-12 965 ax-13 966 ax-14 967 ax-17 968 ax-4 970 ax-5o 972 ax-6o 975 ax-9o 1119 ax-10o 1136 ax-16 1206 ax-11o 1213 ax-ext 1452 ax-rep 2683 ax-sep 2693 ax-nul 2700 ax-pow 2732 ax-pr 2769 ax-un 2857 ax-reg 4565 ax-inf2 4597 ax-ac 4716 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3or 774 df-3an 775 df-ex 978 df-sb 1168 df-eu 1375 df-mo 1376 df-clab 1457 df-cleq 1462 df-clel 1465 df-ne 1579 df-nel 1580 df-ral 1641 df-rex 1642 df-reu 1643 df-rab 1644 df-v 1803 df-sbc 1932 df-csb 1992 df-dif 2039 df-un 2040 df-in 2041 df-ss 2043 df-pss 2045 df-nul 2271 df-if 2352 df-pw 2392 df-sn 2402 df-pr 2403 df-tp 2405 df-op 2406 df-uni 2494 df-int 2524 df-iun 2558 df-iin 2559 df-br 2610 df-opab 2657 df-tr 2671 df-eprel 2821 df-id 2824 df-po 2831 df-so 2841 df-fr 2907 df-we 2924 df-ord 2941 df-on 2942 df-lim 2943 df-suc 2944 df-om 3122 df-xp 3174 df-rel 3175 df-cnv 3176 df-co 3177 df-dm 3178 df-rn 3179 df-res 3180 df-ima 3181 df-fun 3182 df-fn 3183 df-f 3184 df-f1 3185 df-fo 3186 df-f1o 3187 df-fv 3188 df-rdg 3917 df-opr 3950 df-oprab 3951 df-1st 4063 df-2nd 4064 df-1o 4117 df-oadd 4119 df-omul 4120 df-er 4245 df-ec 4247 df-qs 4250 df-map 4308 df-en 4351 df-dom 4352 df-sdom 4353 df-sup 4548 df-r1 4615 df-rank 4616 df-ni 4972 df-pli 4973 df-mi 4974 df-lti 4975 df-plpq 5007 df-mpq 5008 df-enq 5009 df-nq 5010 df-plq 5011 df-mq 5012 df-rq 5013 df-ltq 5014 df-1q 5015 df-np 5058 df-1p 5059 df-plp 5060 df-mp 5061 df-ltp 5062 df-plpr 5136 df-mpr 5137 df-enr 5138 df-nr 5139 df-plr 5140 df-mr 5141 df-ltr 5142 df-0r 5143 df-1r 5144 df-m1r 5145 df-c 5212 df-0 5213 df-1 5214 df-i 5215 df-r 5216 df-plus 5217 df-mul 5218 df-lt 5219 df-sub 5328 df-neg 5330 df-pnf 5459 df-mnf 5460 df-xr 5461 df-ltxr 5462 df-le 5463 df-div 5672 df-n 5873 df-2 5917 df-3 5918 df-4 5919 df-5 5920 df-6 5921 df-7 5922 df-8 5923 df-9 5924 df-n0 6047 df-z 6083 df-fl 6172 df-q 6194 df-rp 6219 df-seq1 6245 df-shft 6278 df-ioo 6298 df-ioc 6299 df-ico 6300 df-icc 6301 df-uz 6350 df-fz 6400 df-seqz 6465 df-seq0 6466 df-exp 6501 df-sqr 6600 df-re 6682 df-im 6683 df-cj 6684 df-abs 6685 df-fac 6869 df-bc 6894 df-clim 6913 df-sum 6918 df-cncf 7198 df-ef 7240 df-sin 7242 df-cos 7243 df-pi 7244 df-top 7534 df-cn 7694 df-cnp 7695 df-met 7732 df-bl 7734 df-opn 7735 df-lm 7860 df-grp 7971 df-gid 7972 df-ginv 7973 df-gdiv 7974 df-abl 8036 df-subg 8052 |