Theorem georeclim 11695

Description: The limit of a geometric series of reciprocals. (Contributed by Paul Chapman, 28-Dec-2007.) (Revised by Mario Carneiro, 26-Apr-2014.)

Hypotheses

Ref	Expression
georeclim.1	|- ( ph -> A e. CC )
georeclim.2	|- ( ph -> 1 < ( abs ` A ) )
georeclim.3	|- ( ( ph /\ k e. NN0 ) -> ( F ` k ) = ( ( 1 / A ) ^ k ) )

Assertion

Ref	Expression
georeclim	|- ( ph -> seq 0 ( + , F ) ~~> ( A / ( A - 1 ) ) )

Distinct variable groups:   A, k   k, F   ph, k

Proof of Theorem georeclim

Step	Hyp	Ref	Expression
1		georeclim.1	. . . 4 |- ( ph -> A e. CC )
2	1	abscld 11363	. . . . . 6 |- ( ph -> ( abs ` A ) e. RR )
3		0red 8044	. . . . . . 7 |- ( ph -> 0 e. RR )
4		1red 8058	. . . . . . 7 |- ( ph -> 1 e. RR )
5		0lt1 8170	. . . . . . . 8 |- 0 < 1
6	5	a1i 9	. . . . . . 7 |- ( ph -> 0 < 1 )
7		georeclim.2	. . . . . . 7 |- ( ph -> 1 < ( abs ` A ) )
8	3, 4, 2, 6, 7	lttrd 8169	. . . . . 6 |- ( ph -> 0 < ( abs ` A ) )
9	2, 8	gt0ap0d 8673	. . . . 5 |- ( ph -> ( abs ` A ) # 0 )
10		abs00ap 11244	. . . . . 6 |- ( A e. CC -> ( ( abs ` A ) # 0 <-> A # 0 ) )
11	1, 10	syl 14	. . . . 5 |- ( ph -> ( ( abs ` A ) # 0 <-> A # 0 ) )
12	9, 11	mpbid 147	. . . 4 |- ( ph -> A # 0 )
13	1, 12	recclapd 8825	. . 3 |- ( ph -> ( 1 / A ) e. CC )
14		1cnd 8059	. . . . . 6 |- ( ph -> 1 e. CC )
15	14, 1, 12	absdivapd 11377	. . . . 5 |- ( ph -> ( abs ` ( 1 / A ) ) = ( ( abs ` 1 ) / ( abs ` A ) ) )
16		abs1 11254	. . . . . 6 |- ( abs ` 1 ) = 1
17	16	oveq1i 5935	. . . . 5 |- ( ( abs ` 1 ) / ( abs ` A ) ) = ( 1 / ( abs ` A ) )
18	15, 17	eqtrdi 2245	. . . 4 |- ( ph -> ( abs ` ( 1 / A ) ) = ( 1 / ( abs ` A ) ) )
19	2, 8	elrpd 9785	. . . . . 6 |- ( ph -> ( abs ` A ) e. RR+ )
20	19	recgt1d 9803	. . . . 5 |- ( ph -> ( 1 < ( abs ` A ) <-> ( 1 / ( abs ` A ) ) < 1 ) )
21	7, 20	mpbid 147	. . . 4 |- ( ph -> ( 1 / ( abs ` A ) ) < 1 )
22	18, 21	eqbrtrd 4056	. . 3 |- ( ph -> ( abs ` ( 1 / A ) ) < 1 )
23		georeclim.3	. . 3 |- ( ( ph /\ k e. NN0 ) -> ( F ` k ) = ( ( 1 / A ) ^ k ) )
24	13, 22, 23	geolim 11693	. 2 |- ( ph -> seq 0 ( + , F ) ~~> ( 1 / ( 1 - ( 1 / A ) ) ) )
25	1, 14, 1, 12	divsubdirapd 8874	. . . . 5 |- ( ph -> ( ( A - 1 ) / A ) = ( ( A / A ) - ( 1 / A ) ) )
26	1, 12	dividapd 8830	. . . . . 6 |- ( ph -> ( A / A ) = 1 )
27	26	oveq1d 5940	. . . . 5 |- ( ph -> ( ( A / A ) - ( 1 / A ) ) = ( 1 - ( 1 / A ) ) )
28	25, 27	eqtrd 2229	. . . 4 |- ( ph -> ( ( A - 1 ) / A ) = ( 1 - ( 1 / A ) ) )
29	28	oveq2d 5941	. . 3 |- ( ph -> ( 1 / ( ( A - 1 ) / A ) ) = ( 1 / ( 1 - ( 1 / A ) ) ) )
30		ax-1cn 7989	. . . . 5 |- 1 e. CC
31		subcl 8242	. . . . 5 |- ( ( A e. CC /\ 1 e. CC ) -> ( A - 1 ) e. CC )
32	1, 30, 31	sylancl 413	. . . 4 |- ( ph -> ( A - 1 ) e. CC )
33	4, 6	elrpd 9785	. . . . . 6 |- ( ph -> 1 e. RR+ )
34	1, 33, 7	absgtap 11692	. . . . 5 |- ( ph -> A # 1 )
35	1, 14, 34	subap0d 8688	. . . 4 |- ( ph -> ( A - 1 ) # 0 )
36	32, 1, 35, 12	recdivapd 8851	. . 3 |- ( ph -> ( 1 / ( ( A - 1 ) / A ) ) = ( A / ( A - 1 ) ) )
37	29, 36	eqtr3d 2231	. 2 |- ( ph -> ( 1 / ( 1 - ( 1 / A ) ) ) = ( A / ( A - 1 ) ) )
38	24, 37	breqtrd 4060	1 |- ( ph -> seq 0 ( + , F ) ~~> ( A / ( A - 1 ) ) )

Syntax hints:   -> wi 4   /\ wa 104   <-> wb 105   = wceq 1364   e. wcel 2167   class class class wbr 4034   ` cfv 5259  (class class class)co 5925   CCcc 7894   0cc0 7896   1c1 7897   + caddc 7899   < clt 8078   - cmin 8214   # cap 8625   / cdiv 8716   NN0cn0 9266   seqcseq 10556   ^cexp 10647   abscabs 11179   ~~> cli 11460

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 615  ax-in2 616  ax-io 710  ax-5 1461  ax-7 1462  ax-gen 1463  ax-ie1 1507  ax-ie2 1508  ax-8 1518  ax-10 1519  ax-11 1520  ax-i12 1521  ax-bndl 1523  ax-4 1524  ax-17 1540  ax-i9 1544  ax-ial 1548  ax-i5r 1549  ax-13 2169  ax-14 2170  ax-ext 2178  ax-coll 4149  ax-sep 4152  ax-nul 4160  ax-pow 4208  ax-pr 4243  ax-un 4469  ax-setind 4574  ax-iinf 4625  ax-cnex 7987  ax-resscn 7988  ax-1cn 7989  ax-1re 7990  ax-icn 7991  ax-addcl 7992  ax-addrcl 7993  ax-mulcl 7994  ax-mulrcl 7995  ax-addcom 7996  ax-mulcom 7997  ax-addass 7998  ax-mulass 7999  ax-distr 8000  ax-i2m1 8001  ax-0lt1 8002  ax-1rid 8003  ax-0id 8004  ax-rnegex 8005  ax-precex 8006  ax-cnre 8007  ax-pre-ltirr 8008  ax-pre-ltwlin 8009  ax-pre-lttrn 8010  ax-pre-apti 8011  ax-pre-ltadd 8012  ax-pre-mulgt0 8013  ax-pre-mulext 8014  ax-arch 8015  ax-caucvg 8016

This theorem depends on definitions:  df-bi 117  df-dc 836  df-3or 981  df-3an 982  df-tru 1367  df-fal 1370  df-nf 1475  df-sb 1777  df-eu 2048  df-mo 2049  df-clab 2183  df-cleq 2189  df-clel 2192  df-nfc 2328  df-ne 2368  df-nel 2463  df-ral 2480  df-rex 2481  df-reu 2482  df-rmo 2483  df-rab 2484  df-v 2765  df-sbc 2990  df-csb 3085  df-dif 3159  df-un 3161  df-in 3163  df-ss 3170  df-nul 3452  df-if 3563  df-pw 3608  df-sn 3629  df-pr 3630  df-op 3632  df-uni 3841  df-int 3876  df-iun 3919  df-br 4035  df-opab 4096  df-mpt 4097  df-tr 4133  df-id 4329  df-po 4332  df-iso 4333  df-iord 4402  df-on 4404  df-ilim 4405  df-suc 4407  df-iom 4628  df-xp 4670  df-rel 4671  df-cnv 4672  df-co 4673  df-dm 4674  df-rn 4675  df-res 4676  df-ima 4677  df-iota 5220  df-fun 5261  df-fn 5262  df-f 5263  df-f1 5264  df-fo 5265  df-f1o 5266  df-fv 5267  df-isom 5268  df-riota 5880  df-ov 5928  df-oprab 5929  df-mpo 5930  df-1st 6207  df-2nd 6208  df-recs 6372  df-irdg 6437  df-frec 6458  df-1o 6483  df-oadd 6487  df-er 6601  df-en 6809  df-dom 6810  df-fin 6811  df-pnf 8080  df-mnf 8081  df-xr 8082  df-ltxr 8083  df-le 8084  df-sub 8216  df-neg 8217  df-reap 8619  df-ap 8626  df-div 8717  df-inn 9008  df-2 9066  df-3 9067  df-4 9068  df-n0 9267  df-z 9344  df-uz 9619  df-q 9711  df-rp 9746  df-fz 10101  df-fzo 10235  df-seqfrec 10557  df-exp 10648  df-ihash 10885  df-cj 11024  df-re 11025  df-im 11026  df-rsqrt 11180  df-abs 11181  df-clim 11461  df-sumdc 11536

This theorem is referenced by:  geoisumr  11700  ege2le3  11853  eftlub  11872