expp1 - Metamath Proof Explorer

	Metamath Proof Explorer		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > expp1		Structured version Visualization version GIF version

Theorem expp1 13789

Description: Value of a complex number raised to a nonnegative integer power plus one. Part of Definition 10-4.1 of [Gleason] p. 134. (Contributed by NM, 20-May-2005.) (Revised by Mario Carneiro, 2-Jul-2013.)

**Assertion**
Ref	Expression
expp1	⊢ ((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ₀) → (𝐴↑(𝑁 + 1)) = ((𝐴↑𝑁) · 𝐴))

**Proof of Theorem expp1**
Step	Hyp	Ref	Expression
1		elnn0 12235	. 2 ⊢ (𝑁 ∈ ℕ₀ ↔ (𝑁 ∈ ℕ ∨ 𝑁 = 0))
2		seqp1 13736	. . . . . . 7 ⊢ (𝑁 ∈ (ℤ_≥‘1) → (seq1( · , (ℕ × {𝐴}))‘(𝑁 + 1)) = ((seq1( · , (ℕ × {𝐴}))‘𝑁) · ((ℕ × {𝐴})‘(𝑁 + 1))))
3		nnuz 12621	. . . . . . 7 ⊢ ℕ = (ℤ_≥‘1)
4	2, 3	eleq2s 2857	. . . . . 6 ⊢ (𝑁 ∈ ℕ → (seq1( · , (ℕ × {𝐴}))‘(𝑁 + 1)) = ((seq1( · , (ℕ × {𝐴}))‘𝑁) · ((ℕ × {𝐴})‘(𝑁 + 1))))
5	4	adantl 482	. . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ) → (seq1( · , (ℕ × {𝐴}))‘(𝑁 + 1)) = ((seq1( · , (ℕ × {𝐴}))‘𝑁) · ((ℕ × {𝐴})‘(𝑁 + 1))))
6		peano2nn 11985	. . . . . . 7 ⊢ (𝑁 ∈ ℕ → (𝑁 + 1) ∈ ℕ)
7		fvconst2g 7077	. . . . . . 7 ⊢ ((𝐴 ∈ ℂ ∧ (𝑁 + 1) ∈ ℕ) → ((ℕ × {𝐴})‘(𝑁 + 1)) = 𝐴)
8	6, 7	sylan2 593	. . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ) → ((ℕ × {𝐴})‘(𝑁 + 1)) = 𝐴)
9	8	oveq2d 7291	. . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ) → ((seq1( · , (ℕ × {𝐴}))‘𝑁) · ((ℕ × {𝐴})‘(𝑁 + 1))) = ((seq1( · , (ℕ × {𝐴}))‘𝑁) · 𝐴))
10	5, 9	eqtrd 2778	. . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ) → (seq1( · , (ℕ × {𝐴}))‘(𝑁 + 1)) = ((seq1( · , (ℕ × {𝐴}))‘𝑁) · 𝐴))
11		expnnval 13785	. . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ (𝑁 + 1) ∈ ℕ) → (𝐴↑(𝑁 + 1)) = (seq1( · , (ℕ × {𝐴}))‘(𝑁 + 1)))
12	6, 11	sylan2 593	. . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ) → (𝐴↑(𝑁 + 1)) = (seq1( · , (ℕ × {𝐴}))‘(𝑁 + 1)))
13		expnnval 13785	. . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ) → (𝐴↑𝑁) = (seq1( · , (ℕ × {𝐴}))‘𝑁))
14	13	oveq1d 7290	. . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ) → ((𝐴↑𝑁) · 𝐴) = ((seq1( · , (ℕ × {𝐴}))‘𝑁) · 𝐴))
15	10, 12, 14	3eqtr4d 2788	. . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ) → (𝐴↑(𝑁 + 1)) = ((𝐴↑𝑁) · 𝐴))
16		exp1 13788	. . . . . 6 ⊢ (𝐴 ∈ ℂ → (𝐴↑1) = 𝐴)
17		mulid2 10974	. . . . . 6 ⊢ (𝐴 ∈ ℂ → (1 · 𝐴) = 𝐴)
18	16, 17	eqtr4d 2781	. . . . 5 ⊢ (𝐴 ∈ ℂ → (𝐴↑1) = (1 · 𝐴))
19	18	adantr 481	. . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 = 0) → (𝐴↑1) = (1 · 𝐴))
20		simpr 485	. . . . . . 7 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 = 0) → 𝑁 = 0)
21	20	oveq1d 7290	. . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 = 0) → (𝑁 + 1) = (0 + 1))
22		0p1e1 12095	. . . . . 6 ⊢ (0 + 1) = 1
23	21, 22	eqtrdi 2794	. . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 = 0) → (𝑁 + 1) = 1)
24	23	oveq2d 7291	. . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 = 0) → (𝐴↑(𝑁 + 1)) = (𝐴↑1))
25		oveq2 7283	. . . . . 6 ⊢ (𝑁 = 0 → (𝐴↑𝑁) = (𝐴↑0))
26		exp0 13786	. . . . . 6 ⊢ (𝐴 ∈ ℂ → (𝐴↑0) = 1)
27	25, 26	sylan9eqr 2800	. . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 = 0) → (𝐴↑𝑁) = 1)
28	27	oveq1d 7290	. . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 = 0) → ((𝐴↑𝑁) · 𝐴) = (1 · 𝐴))
29	19, 24, 28	3eqtr4d 2788	. . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 = 0) → (𝐴↑(𝑁 + 1)) = ((𝐴↑𝑁) · 𝐴))
30	15, 29	jaodan 955	. 2 ⊢ ((𝐴 ∈ ℂ ∧ (𝑁 ∈ ℕ ∨ 𝑁 = 0)) → (𝐴↑(𝑁 + 1)) = ((𝐴↑𝑁) · 𝐴))
31	1, 30	sylan2b 594	1 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ₀) → (𝐴↑(𝑁 + 1)) = ((𝐴↑𝑁) · 𝐴))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 396 ∨ wo 844 = wceq 1539 ∈ wcel 2106 {csn 4561 × cxp 5587 ‘cfv 6433 (class class class)co 7275 ℂcc 10869 0cc0 10871 1c1 10872 + caddc 10874 · cmul 10876 ℕcn 11973 ℕ₀cn0 12233 ℤ_≥cuz 12582 seqcseq 13721 ↑cexp 13782

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 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 2709 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948

This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-er 8498 df-en 8734 df-dom 8735 df-sdom 8736 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-nn 11974 df-n0 12234 df-z 12320 df-uz 12583 df-seq 13722 df-exp 13783

This theorem is referenced by: expcllem 13793 expm1t 13811 expeq0 13813 mulexp 13822 expadd 13825 expmul 13828 sqval 13835 expp1d 13865 leexp2r 13892 leexp1a 13893 cu2 13917 i3 13920 binom3 13939 bernneq 13944 modexp 13953 faclbnd 14004 faclbnd2 14005 faclbnd4lem1 14007 faclbnd6 14013 cjexp 14861 absexp 15016 binomlem 15541 climcndslem1 15561 climcndslem2 15562 pwdif 15580 geolim 15582 geo2sum 15585 efexp 15810 demoivreALT 15910 rpnnen2lem11 15933 pwp1fsum 16100 prmdvdsexp 16420 pcexp 16560 prmreclem6 16622 decexp2 16776 numexpp1 16779 2exp7 16789 cnfldexp 20631 expcn 24035 mbfi1fseqlem5 24884 dvexp 25117 aaliou3lem2 25503 tangtx 25662 cxpmul2 25844 mcubic 25997 cubic2 25998 binom4 26000 dquartlem2 26002 quart1lem 26005 quart1 26006 quartlem1 26007 log2cnv 26094 log2ublem2 26097 log2ub 26099 basellem3 26232 chtublem 26359 perfectlem1 26377 perfectlem2 26378 bclbnd 26428 bposlem8 26439 dchrisum0flblem1 26656 pntlemo 26755 qabvexp 26774 psgnfzto1st 31372 oddpwdc 32321 hgt750lem 32631 subfacval2 33149 sinccvglem 33630 heiborlem6 35974 bfplem1 35980 3lexlogpow5ineq1 40062 perfectALTVlem1 45173 perfectALTVlem2 45174 altgsumbcALT 45689

W3C validator