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Theorem oexpneg 16329

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 12617	. . . . 5 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℤ)
2		odd2np1 16325	. . . . 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 475	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → ∃𝑛 ∈ ℤ ((2 · 𝑛) + 1) = 𝑁)
5	4	3adant1 1127	. 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → ∃𝑛 ∈ ℤ ((2 · 𝑛) + 1) = 𝑁)
6		simpl1 1188	. . . . . 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 1189	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 𝑁 ∈ ℕ)
9	8	nncnd 12266	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 𝑁 ∈ ℂ)
10		1cnd 11247	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 1 ∈ ℂ)
11		2z 12632	. . . . . . . . . . 11 ⊢ 2 ∈ ℤ
12		simprl 769	. . . . . . . . . . 11 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 𝑛 ∈ ℤ)
13		zmulcl 12649	. . . . . . . . . . 11 ⊢ ((2 ∈ ℤ ∧ 𝑛 ∈ ℤ) → (2 · 𝑛) ∈ ℤ)
14	11, 12, 13	sylancr 585	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (2 · 𝑛) ∈ ℤ)
15	14	zcnd 12705	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (2 · 𝑛) ∈ ℂ)
16	9, 10, 15	subadd2d 11628	. . . . . . . 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 12551	. . . . . . . 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 2830	. . . . . 6 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (2 · 𝑛) ∈ ℕ₀)
21	6, 20	expcld 14150	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (𝐴↑(2 · 𝑛)) ∈ ℂ)
22	21, 6	mulneg2d 11706	. . . 4 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((𝐴↑(2 · 𝑛)) · -𝐴) = -((𝐴↑(2 · 𝑛)) · 𝐴))
23		sqneg 14120	. . . . . . . . 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 7441	. . . . . . 7 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((-𝐴↑2)↑𝑛) = ((𝐴↑2)↑𝑛))
26	6	negcld 11596	. . . . . . . 8 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → -𝐴 ∈ ℂ)
27		2rp 13019	. . . . . . . . . . 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 12704	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 𝑛 ∈ ℝ)
30	20	nn0ge0d 12573	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 0 ≤ (2 · 𝑛))
31	28, 29, 30	prodge0rd 13121	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 0 ≤ 𝑛)
32		elnn0z 12609	. . . . . . . . 9 ⊢ (𝑛 ∈ ℕ₀ ↔ (𝑛 ∈ ℤ ∧ 0 ≤ 𝑛))
33	12, 31, 32	sylanbrc 581	. . . . . . . 8 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 𝑛 ∈ ℕ₀)
34		2nn0 12527	. . . . . . . . 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 14153	. . . . . . 7 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑(2 · 𝑛)) = ((-𝐴↑2)↑𝑛))
37	6, 33, 35	expmuld 14153	. . . . . . 7 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (𝐴↑(2 · 𝑛)) = ((𝐴↑2)↑𝑛))
38	25, 36, 37	3eqtr4d 2778	. . . . . 6 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑(2 · 𝑛)) = (𝐴↑(2 · 𝑛)))
39	38	oveq1d 7441	. . . . 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 14151	. . . . . 6 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑((2 · 𝑛) + 1)) = ((-𝐴↑(2 · 𝑛)) · -𝐴))
41	7	oveq2d 7442	. . . . . 6 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑((2 · 𝑛) + 1)) = (-𝐴↑𝑁))
42	40, 41	eqtr3d 2770	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((-𝐴↑(2 · 𝑛)) · -𝐴) = (-𝐴↑𝑁))
43	39, 42	eqtr3d 2770	. . . 4 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((𝐴↑(2 · 𝑛)) · -𝐴) = (-𝐴↑𝑁))
44	22, 43	eqtr3d 2770	. . 3 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → -((𝐴↑(2 · 𝑛)) · 𝐴) = (-𝐴↑𝑁))
45	6, 20	expp1d 14151	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (𝐴↑((2 · 𝑛) + 1)) = ((𝐴↑(2 · 𝑛)) · 𝐴))
46	7	oveq2d 7442	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (𝐴↑((2 · 𝑛) + 1)) = (𝐴↑𝑁))
47	45, 46	eqtr3d 2770	. . . 4 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((𝐴↑(2 · 𝑛)) · 𝐴) = (𝐴↑𝑁))
48	47	negeqd 11492	. . 3 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → -((𝐴↑(2 · 𝑛)) · 𝐴) = -(𝐴↑𝑁))
49	44, 48	eqtr3d 2770	. 2 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑𝑁) = -(𝐴↑𝑁))
50	5, 49	rexlimddv 3158	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 394 ∧ w3a 1084 = wceq 1533 ∈ wcel 2098 ∃wrex 3067 class class class wbr 5152 (class class class)co 7426 ℂcc 11144 0cc0 11146 1c1 11147 + caddc 11149 · cmul 11151 ≤ cle 11287 − cmin 11482 -cneg 11483 ℕcn 12250 2c2 12305 ℕ₀cn0 12510 ℤcz 12596 ℝ⁺crp 13014 ↑cexp 14066 ∥ cdvds 16238

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2166 ax-ext 2699 ax-sep 5303 ax-nul 5310 ax-pow 5369 ax-pr 5433 ax-un 7746 ax-cnex 11202 ax-resscn 11203 ax-1cn 11204 ax-icn 11205 ax-addcl 11206 ax-addrcl 11207 ax-mulcl 11208 ax-mulrcl 11209 ax-mulcom 11210 ax-addass 11211 ax-mulass 11212 ax-distr 11213 ax-i2m1 11214 ax-1ne0 11215 ax-1rid 11216 ax-rnegex 11217 ax-rrecex 11218 ax-cnre 11219 ax-pre-lttri 11220 ax-pre-lttrn 11221 ax-pre-ltadd 11222 ax-pre-mulgt0 11223

This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2529 df-eu 2558 df-clab 2706 df-cleq 2720 df-clel 2806 df-nfc 2881 df-ne 2938 df-nel 3044 df-ral 3059 df-rex 3068 df-rmo 3374 df-reu 3375 df-rab 3431 df-v 3475 df-sbc 3779 df-csb 3895 df-dif 3952 df-un 3954 df-in 3956 df-ss 3966 df-pss 3968 df-nul 4327 df-if 4533 df-pw 4608 df-sn 4633 df-pr 4635 df-op 4639 df-uni 4913 df-iun 5002 df-br 5153 df-opab 5215 df-mpt 5236 df-tr 5270 df-id 5580 df-eprel 5586 df-po 5594 df-so 5595 df-fr 5637 df-we 5639 df-xp 5688 df-rel 5689 df-cnv 5690 df-co 5691 df-dm 5692 df-rn 5693 df-res 5694 df-ima 5695 df-pred 6310 df-ord 6377 df-on 6378 df-lim 6379 df-suc 6380 df-iota 6505 df-fun 6555 df-fn 6556 df-f 6557 df-f1 6558 df-fo 6559 df-f1o 6560 df-fv 6561 df-riota 7382 df-ov 7429 df-oprab 7430 df-mpo 7431 df-om 7877 df-2nd 8000 df-frecs 8293 df-wrecs 8324 df-recs 8398 df-rdg 8437 df-er 8731 df-en 8971 df-dom 8972 df-sdom 8973 df-pnf 11288 df-mnf 11289 df-xr 11290 df-ltxr 11291 df-le 11292 df-sub 11484 df-neg 11485 df-div 11910 df-nn 12251 df-2 12313 df-n0 12511 df-z 12597 df-uz 12861 df-rp 13015 df-seq 14007 df-exp 14067 df-dvds 16239

This theorem is referenced by: dcubic1lem 26795 dcubic2 26796 mcubic 26799 lgseisenlem1 27328 lgseisenlem4 27331 m1lgs 27341 oexpreposd 41912 dffltz 42089 stirlinglem5 45495 2pwp1prm 46958

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