ellogdm - Metamath Proof Explorer

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Theorem ellogdm 25224

Description: Elementhood in the "continuous domain" of the complex logarithm. (Contributed by Mario Carneiro, 18-Feb-2015.)

**Hypothesis**
Ref	Expression
logcn.d	⊢ 𝐷 = (ℂ ∖ (-∞(,]0))

**Assertion**
Ref	Expression
ellogdm	⊢ (𝐴 ∈ 𝐷 ↔ (𝐴 ∈ ℂ ∧ (𝐴 ∈ ℝ → 𝐴 ∈ ℝ⁺)))

**Proof of Theorem ellogdm**
Step	Hyp	Ref	Expression
1		logcn.d	. . 3 ⊢ 𝐷 = (ℂ ∖ (-∞(,]0))
2	1	eleq2i 2906	. 2 ⊢ (𝐴 ∈ 𝐷 ↔ 𝐴 ∈ (ℂ ∖ (-∞(,]0)))
3		eldif 3948	. 2 ⊢ (𝐴 ∈ (ℂ ∖ (-∞(,]0)) ↔ (𝐴 ∈ ℂ ∧ ¬ 𝐴 ∈ (-∞(,]0)))
4		mnfxr 10700	. . . . . . 7 ⊢ -∞ ∈ ℝ^*
5		0re 10645	. . . . . . 7 ⊢ 0 ∈ ℝ
6		elioc2 12802	. . . . . . 7 ⊢ ((-∞ ∈ ℝ^* ∧ 0 ∈ ℝ) → (𝐴 ∈ (-∞(,]0) ↔ (𝐴 ∈ ℝ ∧ -∞ < 𝐴 ∧ 𝐴 ≤ 0)))
7	4, 5, 6	mp2an 690	. . . . . 6 ⊢ (𝐴 ∈ (-∞(,]0) ↔ (𝐴 ∈ ℝ ∧ -∞ < 𝐴 ∧ 𝐴 ≤ 0))
8		df-3an 1085	. . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ -∞ < 𝐴 ∧ 𝐴 ≤ 0) ↔ ((𝐴 ∈ ℝ ∧ -∞ < 𝐴) ∧ 𝐴 ≤ 0))
9		mnflt 12521	. . . . . . . . 9 ⊢ (𝐴 ∈ ℝ → -∞ < 𝐴)
10	9	pm4.71i 562	. . . . . . . 8 ⊢ (𝐴 ∈ ℝ ↔ (𝐴 ∈ ℝ ∧ -∞ < 𝐴))
11	10	anbi1i 625	. . . . . . 7 ⊢ ((𝐴 ∈ ℝ ∧ 𝐴 ≤ 0) ↔ ((𝐴 ∈ ℝ ∧ -∞ < 𝐴) ∧ 𝐴 ≤ 0))
12		lenlt 10721	. . . . . . . . . 10 ⊢ ((𝐴 ∈ ℝ ∧ 0 ∈ ℝ) → (𝐴 ≤ 0 ↔ ¬ 0 < 𝐴))
13	5, 12	mpan2 689	. . . . . . . . 9 ⊢ (𝐴 ∈ ℝ → (𝐴 ≤ 0 ↔ ¬ 0 < 𝐴))
14		elrp 12394	. . . . . . . . . . 11 ⊢ (𝐴 ∈ ℝ⁺ ↔ (𝐴 ∈ ℝ ∧ 0 < 𝐴))
15	14	baib 538	. . . . . . . . . 10 ⊢ (𝐴 ∈ ℝ → (𝐴 ∈ ℝ⁺ ↔ 0 < 𝐴))
16	15	notbid 320	. . . . . . . . 9 ⊢ (𝐴 ∈ ℝ → (¬ 𝐴 ∈ ℝ⁺ ↔ ¬ 0 < 𝐴))
17	13, 16	bitr4d 284	. . . . . . . 8 ⊢ (𝐴 ∈ ℝ → (𝐴 ≤ 0 ↔ ¬ 𝐴 ∈ ℝ⁺))
18	17	pm5.32i 577	. . . . . . 7 ⊢ ((𝐴 ∈ ℝ ∧ 𝐴 ≤ 0) ↔ (𝐴 ∈ ℝ ∧ ¬ 𝐴 ∈ ℝ⁺))
19	11, 18	bitr3i 279	. . . . . 6 ⊢ (((𝐴 ∈ ℝ ∧ -∞ < 𝐴) ∧ 𝐴 ≤ 0) ↔ (𝐴 ∈ ℝ ∧ ¬ 𝐴 ∈ ℝ⁺))
20	7, 8, 19	3bitri 299	. . . . 5 ⊢ (𝐴 ∈ (-∞(,]0) ↔ (𝐴 ∈ ℝ ∧ ¬ 𝐴 ∈ ℝ⁺))
21	20	notbii 322	. . . 4 ⊢ (¬ 𝐴 ∈ (-∞(,]0) ↔ ¬ (𝐴 ∈ ℝ ∧ ¬ 𝐴 ∈ ℝ⁺))
22		iman 404	. . . 4 ⊢ ((𝐴 ∈ ℝ → 𝐴 ∈ ℝ⁺) ↔ ¬ (𝐴 ∈ ℝ ∧ ¬ 𝐴 ∈ ℝ⁺))
23	21, 22	bitr4i 280	. . 3 ⊢ (¬ 𝐴 ∈ (-∞(,]0) ↔ (𝐴 ∈ ℝ → 𝐴 ∈ ℝ⁺))
24	23	anbi2i 624	. 2 ⊢ ((𝐴 ∈ ℂ ∧ ¬ 𝐴 ∈ (-∞(,]0)) ↔ (𝐴 ∈ ℂ ∧ (𝐴 ∈ ℝ → 𝐴 ∈ ℝ⁺)))
25	2, 3, 24	3bitri 299	1 ⊢ (𝐴 ∈ 𝐷 ↔ (𝐴 ∈ ℂ ∧ (𝐴 ∈ ℝ → 𝐴 ∈ ℝ⁺)))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ↔ wb 208 ∧ wa 398 ∧ w3a 1083 = wceq 1537 ∈ wcel 2114 ∖ cdif 3935 class class class wbr 5068 (class class class)co 7158 ℂcc 10537 ℝcr 10538 0cc0 10539 -∞cmnf 10675 ℝ^*cxr 10676 < clt 10677 ≤ cle 10678 ℝ⁺crp 12392 (,]cioc 12742

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 ax-sep 5205 ax-nul 5212 ax-pow 5268 ax-pr 5332 ax-un 7463 ax-cnex 10595 ax-resscn 10596 ax-1cn 10597 ax-addrcl 10600 ax-rnegex 10610 ax-cnre 10612 ax-pre-lttri 10613 ax-pre-lttrn 10614

This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ne 3019 df-nel 3126 df-ral 3145 df-rex 3146 df-rab 3149 df-v 3498 df-sbc 3775 df-csb 3886 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-nul 4294 df-if 4470 df-pw 4543 df-sn 4570 df-pr 4572 df-op 4576 df-uni 4841 df-br 5069 df-opab 5131 df-mpt 5149 df-id 5462 df-po 5476 df-so 5477 df-xp 5563 df-rel 5564 df-cnv 5565 df-co 5566 df-dm 5567 df-rn 5568 df-res 5569 df-ima 5570 df-iota 6316 df-fun 6359 df-fn 6360 df-f 6361 df-f1 6362 df-fo 6363 df-f1o 6364 df-fv 6365 df-ov 7161 df-oprab 7162 df-mpo 7163 df-er 8291 df-en 8512 df-dom 8513 df-sdom 8514 df-pnf 10679 df-mnf 10680 df-xr 10681 df-ltxr 10682 df-le 10683 df-rp 12393 df-ioc 12746

This theorem is referenced by: logdmn0 25225 logdmnrp 25226 logdmss 25227 logcnlem2 25228 logcnlem3 25229 logcnlem4 25230 logcnlem5 25231 logcn 25232 dvloglem 25233 logf1o2 25235 cxpcn 25328 cxpcn2 25329 dmlogdmgm 25603 rpdmgm 25604 lgamgulmlem2 25609 lgamcvg2 25634 logdivsqrle 31923 binomcxplemdvbinom 40692

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