Theorem georeclim 11824

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 11492	. . . . . 6 |- ( ph -> ( abs ` A ) e. RR )
3		0red 8073	. . . . . . 7 |- ( ph -> 0 e. RR )
4		1red 8087	. . . . . . 7 |- ( ph -> 1 e. RR )
5		0lt1 8199	. . . . . . . 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 8198	. . . . . 6 |- ( ph -> 0 < ( abs ` A ) )
9	2, 8	gt0ap0d 8702	. . . . 5 |- ( ph -> ( abs ` A ) # 0 )
10		abs00ap 11373	. . . . . 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 8854	. . 3 |- ( ph -> ( 1 / A ) e. CC )
14		1cnd 8088	. . . . . 6 |- ( ph -> 1 e. CC )
15	14, 1, 12	absdivapd 11506	. . . . 5 |- ( ph -> ( abs ` ( 1 / A ) ) = ( ( abs ` 1 ) / ( abs ` A ) ) )
16		abs1 11383	. . . . . 6 |- ( abs ` 1 ) = 1
17	16	oveq1i 5954	. . . . 5 |- ( ( abs ` 1 ) / ( abs ` A ) ) = ( 1 / ( abs ` A ) )
18	15, 17	eqtrdi 2254	. . . 4 |- ( ph -> ( abs ` ( 1 / A ) ) = ( 1 / ( abs ` A ) ) )
19	2, 8	elrpd 9815	. . . . . 6 |- ( ph -> ( abs ` A ) e. RR+ )
20	19	recgt1d 9833	. . . . 5 |- ( ph -> ( 1 < ( abs ` A ) <-> ( 1 / ( abs ` A ) ) < 1 ) )
21	7, 20	mpbid 147	. . . 4 |- ( ph -> ( 1 / ( abs ` A ) ) < 1 )
22	18, 21	eqbrtrd 4066	. . 3 |- ( ph -> ( abs ` ( 1 / A ) ) < 1 )
23		georeclim.3	. . 3 |- ( ( ph /\ k e. NN0 ) -> ( F ` k ) = ( ( 1 / A ) ^ k ) )
24	13, 22, 23	geolim 11822	. 2 |- ( ph -> seq 0 ( + , F ) ~~> ( 1 / ( 1 - ( 1 / A ) ) ) )
25	1, 14, 1, 12	divsubdirapd 8903	. . . . 5 |- ( ph -> ( ( A - 1 ) / A ) = ( ( A / A ) - ( 1 / A ) ) )
26	1, 12	dividapd 8859	. . . . . 6 |- ( ph -> ( A / A ) = 1 )
27	26	oveq1d 5959	. . . . 5 |- ( ph -> ( ( A / A ) - ( 1 / A ) ) = ( 1 - ( 1 / A ) ) )
28	25, 27	eqtrd 2238	. . . 4 |- ( ph -> ( ( A - 1 ) / A ) = ( 1 - ( 1 / A ) ) )
29	28	oveq2d 5960	. . 3 |- ( ph -> ( 1 / ( ( A - 1 ) / A ) ) = ( 1 / ( 1 - ( 1 / A ) ) ) )
30		ax-1cn 8018	. . . . 5 |- 1 e. CC
31		subcl 8271	. . . . 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 9815	. . . . . 6 |- ( ph -> 1 e. RR+ )
34	1, 33, 7	absgtap 11821	. . . . 5 |- ( ph -> A # 1 )
35	1, 14, 34	subap0d 8717	. . . 4 |- ( ph -> ( A - 1 ) # 0 )
36	32, 1, 35, 12	recdivapd 8880	. . 3 |- ( ph -> ( 1 / ( ( A - 1 ) / A ) ) = ( A / ( A - 1 ) ) )
37	29, 36	eqtr3d 2240	. 2 |- ( ph -> ( 1 / ( 1 - ( 1 / A ) ) ) = ( A / ( A - 1 ) ) )
38	24, 37	breqtrd 4070	1 |- ( ph -> seq 0 ( + , F ) ~~> ( A / ( A - 1 ) ) )

Syntax hints:   -> wi 4   /\ wa 104   <-> wb 105   = wceq 1373   e. wcel 2176   class class class wbr 4044   ` cfv 5271  (class class class)co 5944   CCcc 7923   0cc0 7925   1c1 7926   + caddc 7928   < clt 8107   - cmin 8243   # cap 8654   / cdiv 8745   NN0cn0 9295   seqcseq 10592   ^cexp 10683   abscabs 11308   ~~> cli 11589

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 711  ax-5 1470  ax-7 1471  ax-gen 1472  ax-ie1 1516  ax-ie2 1517  ax-8 1527  ax-10 1528  ax-11 1529  ax-i12 1530  ax-bndl 1532  ax-4 1533  ax-17 1549  ax-i9 1553  ax-ial 1557  ax-i5r 1558  ax-13 2178  ax-14 2179  ax-ext 2187  ax-coll 4159  ax-sep 4162  ax-nul 4170  ax-pow 4218  ax-pr 4253  ax-un 4480  ax-setind 4585  ax-iinf 4636  ax-cnex 8016  ax-resscn 8017  ax-1cn 8018  ax-1re 8019  ax-icn 8020  ax-addcl 8021  ax-addrcl 8022  ax-mulcl 8023  ax-mulrcl 8024  ax-addcom 8025  ax-mulcom 8026  ax-addass 8027  ax-mulass 8028  ax-distr 8029  ax-i2m1 8030  ax-0lt1 8031  ax-1rid 8032  ax-0id 8033  ax-rnegex 8034  ax-precex 8035  ax-cnre 8036  ax-pre-ltirr 8037  ax-pre-ltwlin 8038  ax-pre-lttrn 8039  ax-pre-apti 8040  ax-pre-ltadd 8041  ax-pre-mulgt0 8042  ax-pre-mulext 8043  ax-arch 8044  ax-caucvg 8045

This theorem depends on definitions:  df-bi 117  df-dc 837  df-3or 982  df-3an 983  df-tru 1376  df-fal 1379  df-nf 1484  df-sb 1786  df-eu 2057  df-mo 2058  df-clab 2192  df-cleq 2198  df-clel 2201  df-nfc 2337  df-ne 2377  df-nel 2472  df-ral 2489  df-rex 2490  df-reu 2491  df-rmo 2492  df-rab 2493  df-v 2774  df-sbc 2999  df-csb 3094  df-dif 3168  df-un 3170  df-in 3172  df-ss 3179  df-nul 3461  df-if 3572  df-pw 3618  df-sn 3639  df-pr 3640  df-op 3642  df-uni 3851  df-int 3886  df-iun 3929  df-br 4045  df-opab 4106  df-mpt 4107  df-tr 4143  df-id 4340  df-po 4343  df-iso 4344  df-iord 4413  df-on 4415  df-ilim 4416  df-suc 4418  df-iom 4639  df-xp 4681  df-rel 4682  df-cnv 4683  df-co 4684  df-dm 4685  df-rn 4686  df-res 4687  df-ima 4688  df-iota 5232  df-fun 5273  df-fn 5274  df-f 5275  df-f1 5276  df-fo 5277  df-f1o 5278  df-fv 5279  df-isom 5280  df-riota 5899  df-ov 5947  df-oprab 5948  df-mpo 5949  df-1st 6226  df-2nd 6227  df-recs 6391  df-irdg 6456  df-frec 6477  df-1o 6502  df-oadd 6506  df-er 6620  df-en 6828  df-dom 6829  df-fin 6830  df-pnf 8109  df-mnf 8110  df-xr 8111  df-ltxr 8112  df-le 8113  df-sub 8245  df-neg 8246  df-reap 8648  df-ap 8655  df-div 8746  df-inn 9037  df-2 9095  df-3 9096  df-4 9097  df-n0 9296  df-z 9373  df-uz 9649  df-q 9741  df-rp 9776  df-fz 10131  df-fzo 10265  df-seqfrec 10593  df-exp 10684  df-ihash 10921  df-cj 11153  df-re 11154  df-im 11155  df-rsqrt 11309  df-abs 11310  df-clim 11590  df-sumdc 11665

This theorem is referenced by:  geoisumr  11829  ege2le3  11982  eftlub  12001