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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 26743 | . . 3 ⊢ (𝜑 → (𝐶↑𝑐𝐴) = (exp‘(𝐴 · (log‘𝐶)))) |
| 5 | cxp112d.b | . . . 4 ⊢ (𝜑 → 𝐵 ∈ ℂ) | |
| 6 | 1, 2, 5 | cxpefd 26743 | . . 3 ⊢ (𝜑 → (𝐶↑𝑐𝐵) = (exp‘(𝐵 · (log‘𝐶)))) |
| 7 | 4, 6 | eqeq12d 2768 | . 2 ⊢ (𝜑 → ((𝐶↑𝑐𝐴) = (𝐶↑𝑐𝐵) ↔ (exp‘(𝐴 · (log‘𝐶))) = (exp‘(𝐵 · (log‘𝐶))))) |
| 8 | 1, 2 | logcld 26601 | . . . 4 ⊢ (𝜑 → (log‘𝐶) ∈ ℂ) |
| 9 | 3, 8 | mulcld 11188 | . . 3 ⊢ (𝜑 → (𝐴 · (log‘𝐶)) ∈ ℂ) |
| 10 | 5, 8 | mulcld 11188 | . . 3 ⊢ (𝜑 → (𝐵 · (log‘𝐶)) ∈ ℂ) |
| 11 | 9, 10 | ef11d 42886 | . 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 483 | . . . . 5 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → 𝐴 ∈ ℂ) |
| 13 | 8 | adantr 483 | . . . . 5 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → (log‘𝐶) ∈ ℂ) |
| 14 | 10 | adantr 483 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → (𝐵 · (log‘𝐶)) ∈ ℂ) |
| 15 | ax-icn 11118 | . . . . . . . . 9 ⊢ i ∈ ℂ | |
| 16 | 2cn 12279 | . . . . . . . . . 10 ⊢ 2 ∈ ℂ | |
| 17 | picn 26487 | . . . . . . . . . 10 ⊢ π ∈ ℂ | |
| 18 | 16, 17 | mulcli 11175 | . . . . . . . . 9 ⊢ (2 · π) ∈ ℂ |
| 19 | 15, 18 | mulcli 11175 | . . . . . . . 8 ⊢ (i · (2 · π)) ∈ ℂ |
| 20 | 19 | a1i 11 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → (i · (2 · π)) ∈ ℂ) |
| 21 | zcn 12559 | . . . . . . . 8 ⊢ (𝑛 ∈ ℤ → 𝑛 ∈ ℂ) | |
| 22 | 21 | adantl 484 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → 𝑛 ∈ ℂ) |
| 23 | 20, 22 | mulcld 11188 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → ((i · (2 · π)) · 𝑛) ∈ ℂ) |
| 24 | 14, 23 | addcld 11187 | . . . . 5 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → ((𝐵 · (log‘𝐶)) + ((i · (2 · π)) · 𝑛)) ∈ ℂ) |
| 25 | cxp112d.1 | . . . . . . 7 ⊢ (𝜑 → 𝐶 ≠ 1) | |
| 26 | 1, 2, 25 | logccne0d 42887 | . . . . . 6 ⊢ (𝜑 → (log‘𝐶) ≠ 0) |
| 27 | 26 | adantr 483 | . . . . 5 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → (log‘𝐶) ≠ 0) |
| 28 | 12, 13, 24, 27 | ldiv 12011 | . . . 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 11991 | . . . . . 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 11959 | . . . . . . . 8 ⊢ (𝜑 → ((𝐵 · (log‘𝐶)) / (log‘𝐶)) = 𝐵) |
| 31 | 30 | adantr 483 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → ((𝐵 · (log‘𝐶)) / (log‘𝐶)) = 𝐵) |
| 32 | 31 | oveq1d 7396 | . . . . . 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 2787 | . . . . 5 ⊢ ((𝜑 ∧ 𝑛 ∈ ℤ) → (((𝐵 · (log‘𝐶)) + ((i · (2 · π)) · 𝑛)) / (log‘𝐶)) = (𝐵 + (((i · (2 · π)) · 𝑛) / (log‘𝐶)))) |
| 34 | 33 | eqeq2d 2763 | . . . 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 3174 | . 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 398 = wceq 1550 ∈ wcel 2132 ≠ wne 2947 ∃wrex 3076 ‘cfv 6506 (class class class)co 7381 ℂcc 11057 0cc0 11059 1c1 11060 ici 11061 + caddc 11062 · cmul 11064 / cdiv 11830 2c2 12258 ℤcz 12554 expce 16063 πcpi 16068 logclog 26585 ↑𝑐ccxp 26586 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1805 ax-4 1819 ax-5 1920 ax-6 1977 ax-7 2018 ax-8 2134 ax-9 2142 ax-10 2165 ax-11 2181 ax-12 2202 ax-ext 2724 ax-rep 5217 ax-sep 5236 ax-nul 5246 ax-pow 5312 ax-pr 5380 ax-un 7703 ax-inf2 9582 ax-cnex 11115 ax-resscn 11116 ax-1cn 11117 ax-icn 11118 ax-addcl 11119 ax-addrcl 11120 ax-mulcl 11121 ax-mulrcl 11122 ax-mulcom 11123 ax-addass 11124 ax-mulass 11125 ax-distr 11126 ax-i2m1 11127 ax-1ne0 11128 ax-1rid 11129 ax-rnegex 11130 ax-rrecex 11131 ax-cnre 11132 ax-pre-lttri 11133 ax-pre-lttrn 11134 ax-pre-ltadd 11135 ax-pre-mulgt0 11136 ax-pre-sup 11137 ax-addf 11138 |
| This theorem depends on definitions: df-bi 209 df-an 399 df-or 857 df-3or 1096 df-3an 1097 df-tru 1553 df-fal 1563 df-ex 1790 df-nf 1794 df-sb 2081 df-mo 2556 df-eu 2586 df-clab 2731 df-cleq 2744 df-clel 2827 df-nfc 2901 df-ne 2948 df-nel 3052 df-ral 3067 df-rex 3077 df-rmo 3357 df-reu 3358 df-rab 3405 df-v 3446 df-sbc 3736 df-csb 3844 df-dif 3898 df-un 3900 df-in 3902 df-ss 3912 df-pss 3915 df-nul 4277 df-if 4471 df-pw 4547 df-sn 4573 df-pr 4575 df-tp 4577 df-op 4579 df-uni 4856 df-int 4896 df-iun 4941 df-iin 4942 df-br 5091 df-opab 5153 df-mpt 5172 df-tr 5198 df-id 5531 df-eprel 5536 df-po 5544 df-so 5545 df-fr 5589 df-se 5590 df-we 5591 df-xp 5642 df-rel 5643 df-cnv 5644 df-co 5645 df-dm 5646 df-rn 5647 df-res 5648 df-ima 5649 df-pred 6273 df-ord 6334 df-on 6335 df-lim 6336 df-suc 6337 df-iota 6462 df-fun 6508 df-fn 6509 df-f 6510 df-f1 6511 df-fo 6512 df-f1o 6513 df-fv 6514 df-isom 6515 df-riota 7338 df-ov 7384 df-oprab 7385 df-mpo 7386 df-of 7645 df-om 7832 df-1st 7955 df-2nd 7956 df-supp 8125 df-frecs 8246 df-wrecs 8277 df-recs 8326 df-rdg 8365 df-1o 8421 df-2o 8422 df-er 8662 df-map 8794 df-pm 8795 df-ixp 8865 df-en 8913 df-dom 8914 df-sdom 8915 df-fin 8916 df-fsupp 9294 df-fi 9343 df-sup 9374 df-inf 9375 df-oi 9444 df-card 9883 df-pnf 11204 df-mnf 11205 df-xr 11206 df-ltxr 11207 df-le 11208 df-sub 11402 df-neg 11403 df-div 11831 df-nn 12197 df-2 12266 df-3 12267 df-4 12268 df-5 12269 df-6 12270 df-7 12271 df-8 12272 df-9 12273 df-n0 12468 df-z 12555 df-dec 12675 df-uz 12826 df-q 12936 df-rp 12980 df-xneg 13100 df-xadd 13101 df-xmul 13102 df-ioo 13339 df-ioc 13340 df-ico 13341 df-icc 13342 df-fz 13499 df-fzo 13646 df-fl 13788 df-mod 13866 df-seq 14001 df-exp 14061 df-fac 14273 df-bc 14302 df-hash 14330 df-shft 15066 df-cj 15098 df-re 15099 df-im 15100 df-sqrt 15234 df-abs 15235 df-limsup 15470 df-clim 15487 df-rlim 15488 df-sum 15686 df-ef 16069 df-sin 16071 df-cos 16072 df-pi 16074 df-struct 17155 df-sets 17172 df-slot 17190 df-ndx 17202 df-base 17218 df-ress 17239 df-plusg 17271 df-mulr 17272 df-starv 17273 df-sca 17274 df-vsca 17275 df-ip 17276 df-tset 17277 df-ple 17278 df-ds 17280 df-unif 17281 df-hom 17282 df-cco 17283 df-rest 17423 df-topn 17424 df-0g 17442 df-gsum 17443 df-topgen 17444 df-pt 17445 df-prds 17448 df-xrs 17504 df-qtop 17509 df-imas 17510 df-xps 17512 df-mre 17586 df-mrc 17587 df-acs 17589 df-mgm 18646 df-sgrp 18725 df-mnd 18741 df-submnd 18790 df-mulg 19082 df-cntz 19329 df-cmn 19794 df-psmet 21385 df-xmet 21386 df-met 21387 df-bl 21388 df-mopn 21389 df-fbas 21390 df-fg 21391 df-cnfld 21394 df-top 22923 df-topon 22940 df-topsp 22962 df-bases 22975 df-cld 23048 df-ntr 23049 df-cls 23050 df-nei 23127 df-lp 23165 df-perf 23166 df-cn 23256 df-cnp 23257 df-haus 23344 df-tx 23591 df-hmeo 23784 df-fil 23875 df-fm 23967 df-flim 23968 df-flf 23969 df-xms 24349 df-ms 24350 df-tms 24351 df-cncf 24909 df-limc 25897 df-dv 25898 df-log 26587 df-cxp 26588 |
| This theorem is referenced by: cxpi11d 42890 |
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