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Theorem oexpneg 16292

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 12580	. . . . 5 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℤ)
2		odd2np1 16288	. . . . 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 476	. . 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 770	. . . . . . . 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 12229	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 𝑁 ∈ ℂ)
10		1cnd 11210	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 1 ∈ ℂ)
11		2z 12595	. . . . . . . . . . 11 ⊢ 2 ∈ ℤ
12		simprl 768	. . . . . . . . . . 11 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 𝑛 ∈ ℤ)
13		zmulcl 12612	. . . . . . . . . . 11 ⊢ ((2 ∈ ℤ ∧ 𝑛 ∈ ℤ) → (2 · 𝑛) ∈ ℤ)
14	11, 12, 13	sylancr 586	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (2 · 𝑛) ∈ ℤ)
15	14	zcnd 12668	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (2 · 𝑛) ∈ ℂ)
16	9, 10, 15	subadd2d 11591	. . . . . . . 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 257	. . . . . . 7 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (𝑁 − 1) = (2 · 𝑛))
18		nnm1nn0 12514	. . . . . . . 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 2828	. . . . . 6 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (2 · 𝑛) ∈ ℕ₀)
21	6, 20	expcld 14113	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (𝐴↑(2 · 𝑛)) ∈ ℂ)
22	21, 6	mulneg2d 11669	. . . 4 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((𝐴↑(2 · 𝑛)) · -𝐴) = -((𝐴↑(2 · 𝑛)) · 𝐴))
23		sqneg 14083	. . . . . . . . 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 7419	. . . . . . 7 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((-𝐴↑2)↑𝑛) = ((𝐴↑2)↑𝑛))
26	6	negcld 11559	. . . . . . . 8 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → -𝐴 ∈ ℂ)
27		2rp 12982	. . . . . . . . . . 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 12667	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 𝑛 ∈ ℝ)
30	20	nn0ge0d 12536	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 0 ≤ (2 · 𝑛))
31	28, 29, 30	prodge0rd 13084	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 0 ≤ 𝑛)
32		elnn0z 12572	. . . . . . . . 9 ⊢ (𝑛 ∈ ℕ₀ ↔ (𝑛 ∈ ℤ ∧ 0 ≤ 𝑛))
33	12, 31, 32	sylanbrc 582	. . . . . . . 8 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 𝑛 ∈ ℕ₀)
34		2nn0 12490	. . . . . . . . 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 14116	. . . . . . 7 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑(2 · 𝑛)) = ((-𝐴↑2)↑𝑛))
37	6, 33, 35	expmuld 14116	. . . . . . 7 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (𝐴↑(2 · 𝑛)) = ((𝐴↑2)↑𝑛))
38	25, 36, 37	3eqtr4d 2776	. . . . . 6 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑(2 · 𝑛)) = (𝐴↑(2 · 𝑛)))
39	38	oveq1d 7419	. . . . 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 14114	. . . . . 6 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑((2 · 𝑛) + 1)) = ((-𝐴↑(2 · 𝑛)) · -𝐴))
41	7	oveq2d 7420	. . . . . 6 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑((2 · 𝑛) + 1)) = (-𝐴↑𝑁))
42	40, 41	eqtr3d 2768	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((-𝐴↑(2 · 𝑛)) · -𝐴) = (-𝐴↑𝑁))
43	39, 42	eqtr3d 2768	. . . 4 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((𝐴↑(2 · 𝑛)) · -𝐴) = (-𝐴↑𝑁))
44	22, 43	eqtr3d 2768	. . 3 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → -((𝐴↑(2 · 𝑛)) · 𝐴) = (-𝐴↑𝑁))
45	6, 20	expp1d 14114	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (𝐴↑((2 · 𝑛) + 1)) = ((𝐴↑(2 · 𝑛)) · 𝐴))
46	7	oveq2d 7420	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (𝐴↑((2 · 𝑛) + 1)) = (𝐴↑𝑁))
47	45, 46	eqtr3d 2768	. . . 4 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((𝐴↑(2 · 𝑛)) · 𝐴) = (𝐴↑𝑁))
48	47	negeqd 11455	. . 3 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → -((𝐴↑(2 · 𝑛)) · 𝐴) = -(𝐴↑𝑁))
49	44, 48	eqtr3d 2768	. 2 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑𝑁) = -(𝐴↑𝑁))
50	5, 49	rexlimddv 3155	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 395 ∧ w3a 1084 = wceq 1533 ∈ wcel 2098 ∃wrex 3064 class class class wbr 5141 (class class class)co 7404 ℂcc 11107 0cc0 11109 1c1 11110 + caddc 11112 · cmul 11114 ≤ cle 11250 − cmin 11445 -cneg 11446 ℕcn 12213 2c2 12268 ℕ₀cn0 12473 ℤcz 12559 ℝ⁺crp 12977 ↑cexp 14029 ∥ cdvds 16201

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 2163 ax-ext 2697 ax-sep 5292 ax-nul 5299 ax-pow 5356 ax-pr 5420 ax-un 7721 ax-cnex 11165 ax-resscn 11166 ax-1cn 11167 ax-icn 11168 ax-addcl 11169 ax-addrcl 11170 ax-mulcl 11171 ax-mulrcl 11172 ax-mulcom 11173 ax-addass 11174 ax-mulass 11175 ax-distr 11176 ax-i2m1 11177 ax-1ne0 11178 ax-1rid 11179 ax-rnegex 11180 ax-rrecex 11181 ax-cnre 11182 ax-pre-lttri 11183 ax-pre-lttrn 11184 ax-pre-ltadd 11185 ax-pre-mulgt0 11186

This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2704 df-cleq 2718 df-clel 2804 df-nfc 2879 df-ne 2935 df-nel 3041 df-ral 3056 df-rex 3065 df-rmo 3370 df-reu 3371 df-rab 3427 df-v 3470 df-sbc 3773 df-csb 3889 df-dif 3946 df-un 3948 df-in 3950 df-ss 3960 df-pss 3962 df-nul 4318 df-if 4524 df-pw 4599 df-sn 4624 df-pr 4626 df-op 4630 df-uni 4903 df-iun 4992 df-br 5142 df-opab 5204 df-mpt 5225 df-tr 5259 df-id 5567 df-eprel 5573 df-po 5581 df-so 5582 df-fr 5624 df-we 5626 df-xp 5675 df-rel 5676 df-cnv 5677 df-co 5678 df-dm 5679 df-rn 5680 df-res 5681 df-ima 5682 df-pred 6293 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6488 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7360 df-ov 7407 df-oprab 7408 df-mpo 7409 df-om 7852 df-2nd 7972 df-frecs 8264 df-wrecs 8295 df-recs 8369 df-rdg 8408 df-er 8702 df-en 8939 df-dom 8940 df-sdom 8941 df-pnf 11251 df-mnf 11252 df-xr 11253 df-ltxr 11254 df-le 11255 df-sub 11447 df-neg 11448 df-div 11873 df-nn 12214 df-2 12276 df-n0 12474 df-z 12560 df-uz 12824 df-rp 12978 df-seq 13970 df-exp 14030 df-dvds 16202

This theorem is referenced by: dcubic1lem 26725 dcubic2 26726 mcubic 26729 lgseisenlem1 27258 lgseisenlem4 27261 m1lgs 27271 oexpreposd 41759 dffltz 41936 stirlinglem5 45348 2pwp1prm 46811

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