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Theorem oexpneg 16284

Description: The exponential of the negative of a number, when the exponent is odd. (Contributed by Mario Carneiro, 25-Apr-2015.) (Proof shortened by AV, 10-Jul-2022.)

**Assertion**
Ref	Expression
oexpneg	⊢ ((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → (-𝐴↑𝑁) = -(𝐴↑𝑁))

Proof of Theorem oexpneg Dummy variable 𝑛 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		nnz 12575	. . . . 5 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℤ)
2		odd2np1 16280	. . . . 5 ⊢ (𝑁 ∈ ℤ → (¬ 2 ∥ 𝑁 ↔ ∃𝑛 ∈ ℤ ((2 · 𝑛) + 1) = 𝑁))
3	1, 2	syl 17	. . . 4 ⊢ (𝑁 ∈ ℕ → (¬ 2 ∥ 𝑁 ↔ ∃𝑛 ∈ ℤ ((2 · 𝑛) + 1) = 𝑁))
4	3	biimpa 477	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → ∃𝑛 ∈ ℤ ((2 · 𝑛) + 1) = 𝑁)
5	4	3adant1 1130	. 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → ∃𝑛 ∈ ℤ ((2 · 𝑛) + 1) = 𝑁)
6		simpl1 1191	. . . . . 6 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 𝐴 ∈ ℂ)
7		simprr 771	. . . . . . . 8 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((2 · 𝑛) + 1) = 𝑁)
8		simpl2 1192	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 𝑁 ∈ ℕ)
9	8	nncnd 12224	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 𝑁 ∈ ℂ)
10		1cnd 11205	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 1 ∈ ℂ)
11		2z 12590	. . . . . . . . . . 11 ⊢ 2 ∈ ℤ
12		simprl 769	. . . . . . . . . . 11 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 𝑛 ∈ ℤ)
13		zmulcl 12607	. . . . . . . . . . 11 ⊢ ((2 ∈ ℤ ∧ 𝑛 ∈ ℤ) → (2 · 𝑛) ∈ ℤ)
14	11, 12, 13	sylancr 587	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (2 · 𝑛) ∈ ℤ)
15	14	zcnd 12663	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (2 · 𝑛) ∈ ℂ)
16	9, 10, 15	subadd2d 11586	. . . . . . . 8 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((𝑁 − 1) = (2 · 𝑛) ↔ ((2 · 𝑛) + 1) = 𝑁))
17	7, 16	mpbird 256	. . . . . . 7 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (𝑁 − 1) = (2 · 𝑛))
18		nnm1nn0 12509	. . . . . . . 8 ⊢ (𝑁 ∈ ℕ → (𝑁 − 1) ∈ ℕ₀)
19	8, 18	syl 17	. . . . . . 7 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (𝑁 − 1) ∈ ℕ₀)
20	17, 19	eqeltrrd 2834	. . . . . 6 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (2 · 𝑛) ∈ ℕ₀)
21	6, 20	expcld 14107	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (𝐴↑(2 · 𝑛)) ∈ ℂ)
22	21, 6	mulneg2d 11664	. . . 4 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((𝐴↑(2 · 𝑛)) · -𝐴) = -((𝐴↑(2 · 𝑛)) · 𝐴))
23		sqneg 14077	. . . . . . . . 9 ⊢ (𝐴 ∈ ℂ → (-𝐴↑2) = (𝐴↑2))
24	6, 23	syl 17	. . . . . . . 8 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑2) = (𝐴↑2))
25	24	oveq1d 7420	. . . . . . 7 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((-𝐴↑2)↑𝑛) = ((𝐴↑2)↑𝑛))
26	6	negcld 11554	. . . . . . . 8 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → -𝐴 ∈ ℂ)
27		2rp 12975	. . . . . . . . . . 11 ⊢ 2 ∈ ℝ⁺
28	27	a1i 11	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 2 ∈ ℝ⁺)
29	12	zred 12662	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 𝑛 ∈ ℝ)
30	20	nn0ge0d 12531	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 0 ≤ (2 · 𝑛))
31	28, 29, 30	prodge0rd 13077	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 0 ≤ 𝑛)
32		elnn0z 12567	. . . . . . . . 9 ⊢ (𝑛 ∈ ℕ₀ ↔ (𝑛 ∈ ℤ ∧ 0 ≤ 𝑛))
33	12, 31, 32	sylanbrc 583	. . . . . . . 8 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 𝑛 ∈ ℕ₀)
34		2nn0 12485	. . . . . . . . 9 ⊢ 2 ∈ ℕ₀
35	34	a1i 11	. . . . . . . 8 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 2 ∈ ℕ₀)
36	26, 33, 35	expmuld 14110	. . . . . . 7 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑(2 · 𝑛)) = ((-𝐴↑2)↑𝑛))
37	6, 33, 35	expmuld 14110	. . . . . . 7 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (𝐴↑(2 · 𝑛)) = ((𝐴↑2)↑𝑛))
38	25, 36, 37	3eqtr4d 2782	. . . . . 6 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑(2 · 𝑛)) = (𝐴↑(2 · 𝑛)))
39	38	oveq1d 7420	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((-𝐴↑(2 · 𝑛)) · -𝐴) = ((𝐴↑(2 · 𝑛)) · -𝐴))
40	26, 20	expp1d 14108	. . . . . 6 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑((2 · 𝑛) + 1)) = ((-𝐴↑(2 · 𝑛)) · -𝐴))
41	7	oveq2d 7421	. . . . . 6 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑((2 · 𝑛) + 1)) = (-𝐴↑𝑁))
42	40, 41	eqtr3d 2774	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((-𝐴↑(2 · 𝑛)) · -𝐴) = (-𝐴↑𝑁))
43	39, 42	eqtr3d 2774	. . . 4 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((𝐴↑(2 · 𝑛)) · -𝐴) = (-𝐴↑𝑁))
44	22, 43	eqtr3d 2774	. . 3 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → -((𝐴↑(2 · 𝑛)) · 𝐴) = (-𝐴↑𝑁))
45	6, 20	expp1d 14108	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (𝐴↑((2 · 𝑛) + 1)) = ((𝐴↑(2 · 𝑛)) · 𝐴))
46	7	oveq2d 7421	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (𝐴↑((2 · 𝑛) + 1)) = (𝐴↑𝑁))
47	45, 46	eqtr3d 2774	. . . 4 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((𝐴↑(2 · 𝑛)) · 𝐴) = (𝐴↑𝑁))
48	47	negeqd 11450	. . 3 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → -((𝐴↑(2 · 𝑛)) · 𝐴) = -(𝐴↑𝑁))
49	44, 48	eqtr3d 2774	. 2 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑𝑁) = -(𝐴↑𝑁))
50	5, 49	rexlimddv 3161	1 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → (-𝐴↑𝑁) = -(𝐴↑𝑁))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 396 ∧ w3a 1087 = wceq 1541 ∈ wcel 2106 ∃wrex 3070 class class class wbr 5147 (class class class)co 7405 ℂcc 11104 0cc0 11106 1c1 11107 + caddc 11109 · cmul 11111 ≤ cle 11245 − cmin 11440 -cneg 11441 ℕcn 12208 2c2 12263 ℕ₀cn0 12468 ℤcz 12554 ℝ⁺crp 12970 ↑cexp 14023 ∥ cdvds 16193

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7721 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-op 4634 df-uni 4908 df-iun 4998 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-pred 6297 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6492 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7361 df-ov 7408 df-oprab 7409 df-mpo 7410 df-om 7852 df-2nd 7972 df-frecs 8262 df-wrecs 8293 df-recs 8367 df-rdg 8406 df-er 8699 df-en 8936 df-dom 8937 df-sdom 8938 df-pnf 11246 df-mnf 11247 df-xr 11248 df-ltxr 11249 df-le 11250 df-sub 11442 df-neg 11443 df-div 11868 df-nn 12209 df-2 12271 df-n0 12469 df-z 12555 df-uz 12819 df-rp 12971 df-seq 13963 df-exp 14024 df-dvds 16194

This theorem is referenced by: dcubic1lem 26337 dcubic2 26338 mcubic 26341 lgseisenlem1 26867 lgseisenlem4 26870 m1lgs 26880 oexpreposd 41207 dffltz 41372 stirlinglem5 44780 2pwp1prm 46243

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