oexpneg - Intuitionistic Logic Explorer

	Intuitionistic Logic Explorer		< Previous Next > Nearby theorems
Mirrors > Home > ILE Home > Th. List > oexpneg		GIF version

Theorem oexpneg 11882

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

**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 9272	. . . . 5 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℤ)
2		odd2np1 11878	. . . . 5 ⊢ (𝑁 ∈ ℤ → (¬ 2 ∥ 𝑁 ↔ ∃𝑛 ∈ ℤ ((2 · 𝑛) + 1) = 𝑁))
3	1, 2	syl 14	. . . 4 ⊢ (𝑁 ∈ ℕ → (¬ 2 ∥ 𝑁 ↔ ∃𝑛 ∈ ℤ ((2 · 𝑛) + 1) = 𝑁))
4	3	biimpa 296	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → ∃𝑛 ∈ ℤ ((2 · 𝑛) + 1) = 𝑁)
5	4	3adant1 1015	. 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → ∃𝑛 ∈ ℤ ((2 · 𝑛) + 1) = 𝑁)
6		simpl1 1000	. . . . . 6 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 𝐴 ∈ ℂ)
7		simprr 531	. . . . . . . 8 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((2 · 𝑛) + 1) = 𝑁)
8		simpl2 1001	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 𝑁 ∈ ℕ)
9	8	nncnd 8933	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 𝑁 ∈ ℂ)
10		1cnd 7973	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 1 ∈ ℂ)
11		2z 9281	. . . . . . . . . . 11 ⊢ 2 ∈ ℤ
12		simprl 529	. . . . . . . . . . 11 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 𝑛 ∈ ℤ)
13		zmulcl 9306	. . . . . . . . . . 11 ⊢ ((2 ∈ ℤ ∧ 𝑛 ∈ ℤ) → (2 · 𝑛) ∈ ℤ)
14	11, 12, 13	sylancr 414	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (2 · 𝑛) ∈ ℤ)
15	14	zcnd 9376	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (2 · 𝑛) ∈ ℂ)
16	9, 10, 15	subadd2d 8287	. . . . . . . 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 167	. . . . . . 7 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (𝑁 − 1) = (2 · 𝑛))
18		nnm1nn0 9217	. . . . . . . 8 ⊢ (𝑁 ∈ ℕ → (𝑁 − 1) ∈ ℕ₀)
19	8, 18	syl 14	. . . . . . 7 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (𝑁 − 1) ∈ ℕ₀)
20	17, 19	eqeltrrd 2255	. . . . . 6 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (2 · 𝑛) ∈ ℕ₀)
21	6, 20	expcld 10654	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (𝐴↑(2 · 𝑛)) ∈ ℂ)
22	21, 6	mulneg2d 8369	. . . 4 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((𝐴↑(2 · 𝑛)) · -𝐴) = -((𝐴↑(2 · 𝑛)) · 𝐴))
23		sqneg 10579	. . . . . . . . 9 ⊢ (𝐴 ∈ ℂ → (-𝐴↑2) = (𝐴↑2))
24	6, 23	syl 14	. . . . . . . 8 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑2) = (𝐴↑2))
25	24	oveq1d 5890	. . . . . . 7 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((-𝐴↑2)↑𝑛) = ((𝐴↑2)↑𝑛))
26	6	negcld 8255	. . . . . . . 8 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → -𝐴 ∈ ℂ)
27		2re 8989	. . . . . . . . . . 11 ⊢ 2 ∈ ℝ
28	27	a1i 9	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 2 ∈ ℝ)
29	12	zred 9375	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 𝑛 ∈ ℝ)
30		2pos 9010	. . . . . . . . . . 11 ⊢ 0 < 2
31	30	a1i 9	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 0 < 2)
32	20	nn0ge0d 9232	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 0 ≤ (2 · 𝑛))
33		prodge0 8811	. . . . . . . . . 10 ⊢ (((2 ∈ ℝ ∧ 𝑛 ∈ ℝ) ∧ (0 < 2 ∧ 0 ≤ (2 · 𝑛))) → 0 ≤ 𝑛)
34	28, 29, 31, 32, 33	syl22anc 1239	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 0 ≤ 𝑛)
35		elnn0z 9266	. . . . . . . . 9 ⊢ (𝑛 ∈ ℕ₀ ↔ (𝑛 ∈ ℤ ∧ 0 ≤ 𝑛))
36	12, 34, 35	sylanbrc 417	. . . . . . . 8 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 𝑛 ∈ ℕ₀)
37		2nn0 9193	. . . . . . . . 9 ⊢ 2 ∈ ℕ₀
38	37	a1i 9	. . . . . . . 8 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → 2 ∈ ℕ₀)
39	26, 36, 38	expmuld 10657	. . . . . . 7 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑(2 · 𝑛)) = ((-𝐴↑2)↑𝑛))
40	6, 36, 38	expmuld 10657	. . . . . . 7 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (𝐴↑(2 · 𝑛)) = ((𝐴↑2)↑𝑛))
41	25, 39, 40	3eqtr4d 2220	. . . . . 6 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑(2 · 𝑛)) = (𝐴↑(2 · 𝑛)))
42	41	oveq1d 5890	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((-𝐴↑(2 · 𝑛)) · -𝐴) = ((𝐴↑(2 · 𝑛)) · -𝐴))
43	26, 20	expp1d 10655	. . . . . 6 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑((2 · 𝑛) + 1)) = ((-𝐴↑(2 · 𝑛)) · -𝐴))
44	7	oveq2d 5891	. . . . . 6 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑((2 · 𝑛) + 1)) = (-𝐴↑𝑁))
45	43, 44	eqtr3d 2212	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((-𝐴↑(2 · 𝑛)) · -𝐴) = (-𝐴↑𝑁))
46	42, 45	eqtr3d 2212	. . . 4 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((𝐴↑(2 · 𝑛)) · -𝐴) = (-𝐴↑𝑁))
47	22, 46	eqtr3d 2212	. . 3 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → -((𝐴↑(2 · 𝑛)) · 𝐴) = (-𝐴↑𝑁))
48	6, 20	expp1d 10655	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (𝐴↑((2 · 𝑛) + 1)) = ((𝐴↑(2 · 𝑛)) · 𝐴))
49	7	oveq2d 5891	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (𝐴↑((2 · 𝑛) + 1)) = (𝐴↑𝑁))
50	48, 49	eqtr3d 2212	. . . 4 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → ((𝐴↑(2 · 𝑛)) · 𝐴) = (𝐴↑𝑁))
51	50	negeqd 8152	. . 3 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → -((𝐴↑(2 · 𝑛)) · 𝐴) = -(𝐴↑𝑁))
52	47, 51	eqtr3d 2212	. 2 ⊢ (((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ (𝑛 ∈ ℤ ∧ ((2 · 𝑛) + 1) = 𝑁)) → (-𝐴↑𝑁) = -(𝐴↑𝑁))
53	5, 52	rexlimddv 2599	1 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → (-𝐴↑𝑁) = -(𝐴↑𝑁))

Colors of variables: wff set class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 104 ↔ wb 105 ∧ w3a 978 = wceq 1353 ∈ wcel 2148 ∃wrex 2456 class class class wbr 4004 (class class class)co 5875 ℂcc 7809 ℝcr 7810 0cc0 7811 1c1 7812 + caddc 7814 · cmul 7816 < clt 7992 ≤ cle 7993 − cmin 8128 -cneg 8129 ℕcn 8919 2c2 8970 ℕ₀cn0 9176 ℤcz 9253 ↑cexp 10519 ∥ cdvds 11794

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 614 ax-in2 615 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-13 2150 ax-14 2151 ax-ext 2159 ax-coll 4119 ax-sep 4122 ax-nul 4130 ax-pow 4175 ax-pr 4210 ax-un 4434 ax-setind 4537 ax-iinf 4588 ax-cnex 7902 ax-resscn 7903 ax-1cn 7904 ax-1re 7905 ax-icn 7906 ax-addcl 7907 ax-addrcl 7908 ax-mulcl 7909 ax-mulrcl 7910 ax-addcom 7911 ax-mulcom 7912 ax-addass 7913 ax-mulass 7914 ax-distr 7915 ax-i2m1 7916 ax-0lt1 7917 ax-1rid 7918 ax-0id 7919 ax-rnegex 7920 ax-precex 7921 ax-cnre 7922 ax-pre-ltirr 7923 ax-pre-ltwlin 7924 ax-pre-lttrn 7925 ax-pre-apti 7926 ax-pre-ltadd 7927 ax-pre-mulgt0 7928 ax-pre-mulext 7929

This theorem depends on definitions: df-bi 117 df-dc 835 df-3or 979 df-3an 980 df-tru 1356 df-fal 1359 df-xor 1376 df-nf 1461 df-sb 1763 df-eu 2029 df-mo 2030 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ne 2348 df-nel 2443 df-ral 2460 df-rex 2461 df-reu 2462 df-rmo 2463 df-rab 2464 df-v 2740 df-sbc 2964 df-csb 3059 df-dif 3132 df-un 3134 df-in 3136 df-ss 3143 df-nul 3424 df-if 3536 df-pw 3578 df-sn 3599 df-pr 3600 df-op 3602 df-uni 3811 df-int 3846 df-iun 3889 df-br 4005 df-opab 4066 df-mpt 4067 df-tr 4103 df-id 4294 df-po 4297 df-iso 4298 df-iord 4367 df-on 4369 df-ilim 4370 df-suc 4372 df-iom 4591 df-xp 4633 df-rel 4634 df-cnv 4635 df-co 4636 df-dm 4637 df-rn 4638 df-res 4639 df-ima 4640 df-iota 5179 df-fun 5219 df-fn 5220 df-f 5221 df-f1 5222 df-fo 5223 df-f1o 5224 df-fv 5225 df-riota 5831 df-ov 5878 df-oprab 5879 df-mpo 5880 df-1st 6141 df-2nd 6142 df-recs 6306 df-frec 6392 df-pnf 7994 df-mnf 7995 df-xr 7996 df-ltxr 7997 df-le 7998 df-sub 8130 df-neg 8131 df-reap 8532 df-ap 8539 df-div 8630 df-inn 8920 df-2 8978 df-n0 9177 df-z 9254 df-uz 9529 df-seqfrec 10446 df-exp 10520 df-dvds 11795

This theorem is referenced by: lgseisenlem1 14453 m1lgs 14455

W3C validator