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| Mirrors > Home > MPE Home > Th. List > Mathboxes > cxp112d | Structured version Visualization version GIF version | ||
| Description: General condition for complex exponentiation to be one-to-one with respect to the second argument. (Contributed by SN, 25-Apr-2025.) |
| Ref | Expression |
|---|---|
| cxp112d.c | ⊢ (𝜑 → 𝐶 ∈ ℂ) |
| cxp112d.a | ⊢ (𝜑 → 𝐴 ∈ ℂ) |
| cxp112d.b | ⊢ (𝜑 → 𝐵 ∈ ℂ) |
| cxp112d.0 | ⊢ (𝜑 → 𝐶 ≠ 0) |
| cxp112d.1 | ⊢ (𝜑 → 𝐶 ≠ 1) |
| Ref | Expression |
|---|---|
| cxp112d | ⊢ (𝜑 → ((𝐶↑𝑐𝐴) = (𝐶↑𝑐𝐵) ↔ ∃𝑛 ∈ ℤ 𝐴 = (𝐵 + (((i · (2 · π)) · 𝑛) / (log‘𝐶))))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cxp112d.c | . . . 4 ⊢ (𝜑 → 𝐶 ∈ ℂ) | |
| 2 | cxp112d.0 | . . . 4 ⊢ (𝜑 → 𝐶 ≠ 0) | |
| 3 | cxp112d.a | . . . 4 ⊢ (𝜑 → 𝐴 ∈ ℂ) | |
| 4 | 1, 2, 3 | cxpefd 26754 | . . 3 ⊢ (𝜑 → (𝐶↑𝑐𝐴) = (exp‘(𝐴 · (log‘𝐶)))) |
| 5 | cxp112d.b | . . . 4 ⊢ (𝜑 → 𝐵 ∈ ℂ) | |
| 6 | 1, 2, 5 | cxpefd 26754 | . . 3 ⊢ (𝜑 → (𝐶↑𝑐𝐵) = (exp‘(𝐵 · (log‘𝐶)))) |
| 7 | 4, 6 | eqeq12d 2777 | . 2 ⊢ (𝜑 → ((𝐶↑𝑐𝐴) = (𝐶↑𝑐𝐵) ↔ (exp‘(𝐴 · (log‘𝐶))) = (exp‘(𝐵 · (log‘𝐶))))) |
| 8 | 1, 2 | logcld 26612 | . . . 4 ⊢ (𝜑 → (log‘𝐶) ∈ ℂ) |
| 9 | 3, 8 | mulcld 11199 | . . 3 ⊢ (𝜑 → (𝐴 · (log‘𝐶)) ∈ ℂ) |
| 10 | 5, 8 | mulcld 11199 | . . 3 ⊢ (𝜑 → (𝐵 · (log‘𝐶)) ∈ ℂ) |
| 11 | 9, 10 | ef11d 42912 | . 2 ⊢ (𝜑 → ((exp‘(𝐴 · (log‘𝐶))) = (exp‘(𝐵 · (log‘𝐶))) ↔ ∃𝑛 ∈ ℤ (𝐴 · (log‘𝐶)) = ((𝐵 · (log‘𝐶)) + ((i · (2 · π)) · 𝑛)))) |
| 12 | 3 | adantr 484 | . . . . 5 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → 𝐴 ∈ ℂ) |
| 13 | 8 | adantr 484 | . . . . 5 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → (log‘𝐶) ∈ ℂ) |
| 14 | 10 | adantr 484 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → (𝐵 · (log‘𝐶)) ∈ ℂ) |
| 15 | ax-icn 11129 | . . . . . . . . 9 ⊢ i ∈ ℂ | |
| 16 | 2cn 12290 | . . . . . . . . . 10 ⊢ 2 ∈ ℂ | |
| 17 | picn 26498 | . . . . . . . . . 10 ⊢ π ∈ ℂ | |
| 18 | 16, 17 | mulcli 11186 | . . . . . . . . 9 ⊢ (2 · π) ∈ ℂ |
| 19 | 15, 18 | mulcli 11186 | . . . . . . . 8 ⊢ (i · (2 · π)) ∈ ℂ |
| 20 | 19 | a1i 11 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → (i · (2 · π)) ∈ ℂ) |
| 21 | zcn 12570 | . . . . . . . 8 ⊢ (𝑛 ∈ ℤ → 𝑛 ∈ ℂ) | |
| 22 | 21 | adantl 485 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → 𝑛 ∈ ℂ) |
| 23 | 20, 22 | mulcld 11199 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → ((i · (2 · π)) · 𝑛) ∈ ℂ) |
| 24 | 14, 23 | addcld 11198 | . . . . 5 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → ((𝐵 · (log‘𝐶)) + ((i · (2 · π)) · 𝑛)) ∈ ℂ) |
| 25 | cxp112d.1 | . . . . . . 7 ⊢ (𝜑 → 𝐶 ≠ 1) | |
| 26 | 1, 2, 25 | logccne0d 42913 | . . . . . 6 ⊢ (𝜑 → (log‘𝐶) ≠ 0) |
| 27 | 26 | adantr 484 | . . . . 5 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → (log‘𝐶) ≠ 0) |
| 28 | 12, 13, 24, 27 | ldiv 12022 | . . . 4 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → ((𝐴 · (log‘𝐶)) = ((𝐵 · (log‘𝐶)) + ((i · (2 · π)) · 𝑛)) ↔ 𝐴 = (((𝐵 · (log‘𝐶)) + ((i · (2 · π)) · 𝑛)) / (log‘𝐶)))) |
| 29 | 14, 23, 13, 27 | divdird 12002 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → (((𝐵 · (log‘𝐶)) + ((i · (2 · π)) · 𝑛)) / (log‘𝐶)) = (((𝐵 · (log‘𝐶)) / (log‘𝐶)) + (((i · (2 · π)) · 𝑛) / (log‘𝐶)))) |
| 30 | 5, 8, 26 | divcan4d 11970 | . . . . . . . 8 ⊢ (𝜑 → ((𝐵 · (log‘𝐶)) / (log‘𝐶)) = 𝐵) |
| 31 | 30 | adantr 484 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → ((𝐵 · (log‘𝐶)) / (log‘𝐶)) = 𝐵) |
| 32 | 31 | oveq1d 7407 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → (((𝐵 · (log‘𝐶)) / (log‘𝐶)) + (((i · (2 · π)) · 𝑛) / (log‘𝐶))) = (𝐵 + (((i · (2 · π)) · 𝑛) / (log‘𝐶)))) |
| 33 | 29, 32 | eqtrd 2796 | . . . . 5 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → (((𝐵 · (log‘𝐶)) + ((i · (2 · π)) · 𝑛)) / (log‘𝐶)) = (𝐵 + (((i · (2 · π)) · 𝑛) / (log‘𝐶)))) |
| 34 | 33 | eqeq2d 2772 | . . . 4 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → (𝐴 = (((𝐵 · (log‘𝐶)) + ((i · (2 · π)) · 𝑛)) / (log‘𝐶)) ↔ 𝐴 = (𝐵 + (((i · (2 · π)) · 𝑛) / (log‘𝐶))))) |
| 35 | 28, 34 | bitrd 281 | . . 3 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → ((𝐴 · (log‘𝐶)) = ((𝐵 · (log‘𝐶)) + ((i · (2 · π)) · 𝑛)) ↔ 𝐴 = (𝐵 + (((i · (2 · π)) · 𝑛) / (log‘𝐶))))) |
| 36 | 35 | rexbidva 3183 | . 2 ⊢ (𝜑 → (∃𝑛 ∈ ℤ (𝐴 · (log‘𝐶)) = ((𝐵 · (log‘𝐶)) + ((i · (2 · π)) · 𝑛)) ↔ ∃𝑛 ∈ ℤ 𝐴 = (𝐵 + (((i · (2 · π)) · 𝑛) / (log‘𝐶))))) |
| 37 | 7, 11, 36 | 3bitrd 307 | 1 ⊢ (𝜑 → ((𝐶↑𝑐𝐴) = (𝐶↑𝑐𝐵) ↔ ∃𝑛 ∈ ℤ 𝐴 = (𝐵 + (((i · (2 · π)) · 𝑛) / (log‘𝐶))))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 ∧ wa 399 = wceq 1559 ∈ wcel 2141 ≠ wne 2956 ∃wrex 3085 ‘cfv 6517 (class class class)co 7392 ℂcc 11068 0cc0 11070 1c1 11071 ici 11072 + caddc 11073 · cmul 11075 / cdiv 11841 2c2 12269 ℤcz 12565 expce 16074 πcpi 16079 logclog 26596 ↑𝑐ccxp 26597 |
| 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 5226 ax-sep 5245 ax-nul 5255 ax-pow 5321 ax-pr 5389 ax-un 7714 ax-inf2 9593 ax-cnex 11126 ax-resscn 11127 ax-1cn 11128 ax-icn 11129 ax-addcl 11130 ax-addrcl 11131 ax-mulcl 11132 ax-mulrcl 11133 ax-mulcom 11134 ax-addass 11135 ax-mulass 11136 ax-distr 11137 ax-i2m1 11138 ax-1ne0 11139 ax-1rid 11140 ax-rnegex 11141 ax-rrecex 11142 ax-cnre 11143 ax-pre-lttri 11144 ax-pre-lttrn 11145 ax-pre-ltadd 11146 ax-pre-mulgt0 11147 ax-pre-sup 11148 ax-addf 11149 |
| 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 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4582 df-pr 4584 df-tp 4586 df-op 4588 df-uni 4865 df-int 4905 df-iun 4950 df-iin 4951 df-br 5100 df-opab 5162 df-mpt 5181 df-tr 5207 df-id 5540 df-eprel 5545 df-po 5553 df-so 5554 df-fr 5598 df-se 5599 df-we 5600 df-xp 5651 df-rel 5652 df-cnv 5653 df-co 5654 df-dm 5655 df-rn 5656 df-res 5657 df-ima 5658 df-pred 6284 df-ord 6345 df-on 6346 df-lim 6347 df-suc 6348 df-iota 6473 df-fun 6519 df-fn 6520 df-f 6521 df-f1 6522 df-fo 6523 df-f1o 6524 df-fv 6525 df-isom 6526 df-riota 7349 df-ov 7395 df-oprab 7396 df-mpo 7397 df-of 7656 df-om 7843 df-1st 7966 df-2nd 7967 df-supp 8136 df-frecs 8257 df-wrecs 8288 df-recs 8337 df-rdg 8376 df-1o 8432 df-2o 8433 df-er 8673 df-map 8805 df-pm 8806 df-ixp 8876 df-en 8924 df-dom 8925 df-sdom 8926 df-fin 8927 df-fsupp 9305 df-fi 9354 df-sup 9385 df-inf 9386 df-oi 9455 df-card 9894 df-pnf 11215 df-mnf 11216 df-xr 11217 df-ltxr 11218 df-le 11219 df-sub 11413 df-neg 11414 df-div 11842 df-nn 12208 df-2 12277 df-3 12278 df-4 12279 df-5 12280 df-6 12281 df-7 12282 df-8 12283 df-9 12284 df-n0 12479 df-z 12566 df-dec 12686 df-uz 12837 df-q 12947 df-rp 12991 df-xneg 13111 df-xadd 13112 df-xmul 13113 df-ioo 13350 df-ioc 13351 df-ico 13352 df-icc 13353 df-fz 13510 df-fzo 13657 df-fl 13799 df-mod 13877 df-seq 14012 df-exp 14072 df-fac 14284 df-bc 14313 df-hash 14341 df-shft 15077 df-cj 15109 df-re 15110 df-im 15111 df-sqrt 15245 df-abs 15246 df-limsup 15481 df-clim 15498 df-rlim 15499 df-sum 15697 df-ef 16080 df-sin 16082 df-cos 16083 df-pi 16085 df-struct 17166 df-sets 17183 df-slot 17201 df-ndx 17213 df-base 17229 df-ress 17250 df-plusg 17282 df-mulr 17283 df-starv 17284 df-sca 17285 df-vsca 17286 df-ip 17287 df-tset 17288 df-ple 17289 df-ds 17291 df-unif 17292 df-hom 17293 df-cco 17294 df-rest 17434 df-topn 17435 df-0g 17453 df-gsum 17454 df-topgen 17455 df-pt 17456 df-prds 17459 df-xrs 17515 df-qtop 17520 df-imas 17521 df-xps 17523 df-mre 17597 df-mrc 17598 df-acs 17600 df-mgm 18657 df-sgrp 18736 df-mnd 18752 df-submnd 18801 df-mulg 19093 df-cntz 19340 df-cmn 19805 df-psmet 21396 df-xmet 21397 df-met 21398 df-bl 21399 df-mopn 21400 df-fbas 21401 df-fg 21402 df-cnfld 21405 df-top 22934 df-topon 22951 df-topsp 22973 df-bases 22986 df-cld 23059 df-ntr 23060 df-cls 23061 df-nei 23138 df-lp 23176 df-perf 23177 df-cn 23267 df-cnp 23268 df-haus 23355 df-tx 23602 df-hmeo 23795 df-fil 23886 df-fm 23978 df-flim 23979 df-flf 23980 df-xms 24360 df-ms 24361 df-tms 24362 df-cncf 24920 df-limc 25908 df-dv 25909 df-log 26598 df-cxp 26599 |
| This theorem is referenced by: cxpi11d 42916 |
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