Theorem georeclim 12064

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 11732	. . . . . 6 |- ( ph -> ( abs ` A ) e. RR )
3		0red 8170	. . . . . . 7 |- ( ph -> 0 e. RR )
4		1red 8184	. . . . . . 7 |- ( ph -> 1 e. RR )
5		0lt1 8296	. . . . . . . 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 8295	. . . . . 6 |- ( ph -> 0 < ( abs ` A ) )
9	2, 8	gt0ap0d 8799	. . . . 5 |- ( ph -> ( abs ` A ) # 0 )
10		abs00ap 11613	. . . . . 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 8951	. . 3 |- ( ph -> ( 1 / A ) e. CC )
14		1cnd 8185	. . . . . 6 |- ( ph -> 1 e. CC )
15	14, 1, 12	absdivapd 11746	. . . . 5 |- ( ph -> ( abs ` ( 1 / A ) ) = ( ( abs ` 1 ) / ( abs ` A ) ) )
16		abs1 11623	. . . . . 6 |- ( abs ` 1 ) = 1
17	16	oveq1i 6023	. . . . 5 |- ( ( abs ` 1 ) / ( abs ` A ) ) = ( 1 / ( abs ` A ) )
18	15, 17	eqtrdi 2278	. . . 4 |- ( ph -> ( abs ` ( 1 / A ) ) = ( 1 / ( abs ` A ) ) )
19	2, 8	elrpd 9918	. . . . . 6 |- ( ph -> ( abs ` A ) e. RR+ )
20	19	recgt1d 9936	. . . . 5 |- ( ph -> ( 1 < ( abs ` A ) <-> ( 1 / ( abs ` A ) ) < 1 ) )
21	7, 20	mpbid 147	. . . 4 |- ( ph -> ( 1 / ( abs ` A ) ) < 1 )
22	18, 21	eqbrtrd 4108	. . 3 |- ( ph -> ( abs ` ( 1 / A ) ) < 1 )
23		georeclim.3	. . 3 |- ( ( ph /\ k e. NN0 ) -> ( F ` k ) = ( ( 1 / A ) ^ k ) )
24	13, 22, 23	geolim 12062	. 2 |- ( ph -> seq 0 ( + , F ) ~~> ( 1 / ( 1 - ( 1 / A ) ) ) )
25	1, 14, 1, 12	divsubdirapd 9000	. . . . 5 |- ( ph -> ( ( A - 1 ) / A ) = ( ( A / A ) - ( 1 / A ) ) )
26	1, 12	dividapd 8956	. . . . . 6 |- ( ph -> ( A / A ) = 1 )
27	26	oveq1d 6028	. . . . 5 |- ( ph -> ( ( A / A ) - ( 1 / A ) ) = ( 1 - ( 1 / A ) ) )
28	25, 27	eqtrd 2262	. . . 4 |- ( ph -> ( ( A - 1 ) / A ) = ( 1 - ( 1 / A ) ) )
29	28	oveq2d 6029	. . 3 |- ( ph -> ( 1 / ( ( A - 1 ) / A ) ) = ( 1 / ( 1 - ( 1 / A ) ) ) )
30		ax-1cn 8115	. . . . 5 |- 1 e. CC
31		subcl 8368	. . . . 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 9918	. . . . . 6 |- ( ph -> 1 e. RR+ )
34	1, 33, 7	absgtap 12061	. . . . 5 |- ( ph -> A # 1 )
35	1, 14, 34	subap0d 8814	. . . 4 |- ( ph -> ( A - 1 ) # 0 )
36	32, 1, 35, 12	recdivapd 8977	. . 3 |- ( ph -> ( 1 / ( ( A - 1 ) / A ) ) = ( A / ( A - 1 ) ) )
37	29, 36	eqtr3d 2264	. 2 |- ( ph -> ( 1 / ( 1 - ( 1 / A ) ) ) = ( A / ( A - 1 ) ) )
38	24, 37	breqtrd 4112	1 |- ( ph -> seq 0 ( + , F ) ~~> ( A / ( A - 1 ) ) )

Syntax hints:   -> wi 4   /\ wa 104   <-> wb 105   = wceq 1395   e. wcel 2200   class class class wbr 4086   ` cfv 5324  (class class class)co 6013   CCcc 8020   0cc0 8022   1c1 8023   + caddc 8025   < clt 8204   - cmin 8340   # cap 8751   / cdiv 8842   NN0cn0 9392   seqcseq 10699   ^cexp 10790   abscabs 11548   ~~> cli 11829

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 617  ax-in2 618  ax-io 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-13 2202  ax-14 2203  ax-ext 2211  ax-coll 4202  ax-sep 4205  ax-nul 4213  ax-pow 4262  ax-pr 4297  ax-un 4528  ax-setind 4633  ax-iinf 4684  ax-cnex 8113  ax-resscn 8114  ax-1cn 8115  ax-1re 8116  ax-icn 8117  ax-addcl 8118  ax-addrcl 8119  ax-mulcl 8120  ax-mulrcl 8121  ax-addcom 8122  ax-mulcom 8123  ax-addass 8124  ax-mulass 8125  ax-distr 8126  ax-i2m1 8127  ax-0lt1 8128  ax-1rid 8129  ax-0id 8130  ax-rnegex 8131  ax-precex 8132  ax-cnre 8133  ax-pre-ltirr 8134  ax-pre-ltwlin 8135  ax-pre-lttrn 8136  ax-pre-apti 8137  ax-pre-ltadd 8138  ax-pre-mulgt0 8139  ax-pre-mulext 8140  ax-arch 8141  ax-caucvg 8142

This theorem depends on definitions:  df-bi 117  df-dc 840  df-3or 1003  df-3an 1004  df-tru 1398  df-fal 1401  df-nf 1507  df-sb 1809  df-eu 2080  df-mo 2081  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-ne 2401  df-nel 2496  df-ral 2513  df-rex 2514  df-reu 2515  df-rmo 2516  df-rab 2517  df-v 2802  df-sbc 3030  df-csb 3126  df-dif 3200  df-un 3202  df-in 3204  df-ss 3211  df-nul 3493  df-if 3604  df-pw 3652  df-sn 3673  df-pr 3674  df-op 3676  df-uni 3892  df-int 3927  df-iun 3970  df-br 4087  df-opab 4149  df-mpt 4150  df-tr 4186  df-id 4388  df-po 4391  df-iso 4392  df-iord 4461  df-on 4463  df-ilim 4464  df-suc 4466  df-iom 4687  df-xp 4729  df-rel 4730  df-cnv 4731  df-co 4732  df-dm 4733  df-rn 4734  df-res 4735  df-ima 4736  df-iota 5284  df-fun 5326  df-fn 5327  df-f 5328  df-f1 5329  df-fo 5330  df-f1o 5331  df-fv 5332  df-isom 5333  df-riota 5966  df-ov 6016  df-oprab 6017  df-mpo 6018  df-1st 6298  df-2nd 6299  df-recs 6466  df-irdg 6531  df-frec 6552  df-1o 6577  df-oadd 6581  df-er 6697  df-en 6905  df-dom 6906  df-fin 6907  df-pnf 8206  df-mnf 8207  df-xr 8208  df-ltxr 8209  df-le 8210  df-sub 8342  df-neg 8343  df-reap 8745  df-ap 8752  df-div 8843  df-inn 9134  df-2 9192  df-3 9193  df-4 9194  df-n0 9393  df-z 9470  df-uz 9746  df-q 9844  df-rp 9879  df-fz 10234  df-fzo 10368  df-seqfrec 10700  df-exp 10791  df-ihash 11028  df-cj 11393  df-re 11394  df-im 11395  df-rsqrt 11549  df-abs 11550  df-clim 11830  df-sumdc 11905

This theorem is referenced by:  geoisumr  12069  ege2le3  12222  eftlub  12241