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Theorem isum1p 12316
Description: The infinite sum of a converging infinite series equals the first term plus the infinite sum of the rest of it. (Contributed by NM, 2-Jan-2006.) (Revised by Mario Carneiro, 24-Apr-2014.)
Hypotheses
Ref Expression
isum1p.1  |-  Z  =  ( ZZ>= `  M )
isum1p.3  |-  ( ph  ->  M  e.  ZZ )
isum1p.4  |-  ( (
ph  /\  k  e.  Z )  ->  ( F `  k )  =  A )
isum1p.5  |-  ( (
ph  /\  k  e.  Z )  ->  A  e.  CC )
isum1p.6  |-  ( ph  ->  seq  M (  +  ,  F )  e. 
dom 
~~>  )
Assertion
Ref Expression
isum1p  |-  ( ph  -> 
sum_ k  e.  Z  A  =  ( ( F `  M )  +  sum_ k  e.  (
ZZ>= `  ( M  + 
1 ) ) A ) )
Distinct variable groups:    k, F    k, M    ph, k    k, Z
Allowed substitution hint:    A( k)

Proof of Theorem isum1p
StepHypRef Expression
1 isum1p.1 . . 3  |-  Z  =  ( ZZ>= `  M )
2 eqid 2296 . . 3  |-  ( ZZ>= `  ( M  +  1
) )  =  (
ZZ>= `  ( M  + 
1 ) )
3 isum1p.3 . . . . . 6  |-  ( ph  ->  M  e.  ZZ )
4 uzid 10258 . . . . . 6  |-  ( M  e.  ZZ  ->  M  e.  ( ZZ>= `  M )
)
53, 4syl 15 . . . . 5  |-  ( ph  ->  M  e.  ( ZZ>= `  M ) )
6 peano2uz 10288 . . . . 5  |-  ( M  e.  ( ZZ>= `  M
)  ->  ( M  +  1 )  e.  ( ZZ>= `  M )
)
75, 6syl 15 . . . 4  |-  ( ph  ->  ( M  +  1 )  e.  ( ZZ>= `  M ) )
87, 1syl6eleqr 2387 . . 3  |-  ( ph  ->  ( M  +  1 )  e.  Z )
9 isum1p.4 . . 3  |-  ( (
ph  /\  k  e.  Z )  ->  ( F `  k )  =  A )
10 isum1p.5 . . 3  |-  ( (
ph  /\  k  e.  Z )  ->  A  e.  CC )
11 isum1p.6 . . 3  |-  ( ph  ->  seq  M (  +  ,  F )  e. 
dom 
~~>  )
121, 2, 8, 9, 10, 11isumsplit 12315 . 2  |-  ( ph  -> 
sum_ k  e.  Z  A  =  ( sum_ k  e.  ( M ... ( ( M  + 
1 )  -  1 ) ) A  +  sum_ k  e.  ( ZZ>= `  ( M  +  1
) ) A ) )
133zcnd 10134 . . . . . . 7  |-  ( ph  ->  M  e.  CC )
14 ax-1cn 8811 . . . . . . 7  |-  1  e.  CC
15 pncan 9073 . . . . . . 7  |-  ( ( M  e.  CC  /\  1  e.  CC )  ->  ( ( M  + 
1 )  -  1 )  =  M )
1613, 14, 15sylancl 643 . . . . . 6  |-  ( ph  ->  ( ( M  + 
1 )  -  1 )  =  M )
1716oveq2d 5890 . . . . 5  |-  ( ph  ->  ( M ... (
( M  +  1 )  -  1 ) )  =  ( M ... M ) )
1817sumeq1d 12190 . . . 4  |-  ( ph  -> 
sum_ k  e.  ( M ... ( ( M  +  1 )  -  1 ) ) A  =  sum_ k  e.  ( M ... M
) A )
19 elfzuz 10810 . . . . . . 7  |-  ( k  e.  ( M ... M )  ->  k  e.  ( ZZ>= `  M )
)
2019, 1syl6eleqr 2387 . . . . . 6  |-  ( k  e.  ( M ... M )  ->  k  e.  Z )
2120, 9sylan2 460 . . . . 5  |-  ( (
ph  /\  k  e.  ( M ... M ) )  ->  ( F `  k )  =  A )
2221sumeq2dv 12192 . . . 4  |-  ( ph  -> 
sum_ k  e.  ( M ... M ) ( F `  k
)  =  sum_ k  e.  ( M ... M
) A )
235, 1syl6eleqr 2387 . . . . . 6  |-  ( ph  ->  M  e.  Z )
249, 10eqeltrd 2370 . . . . . . 7  |-  ( (
ph  /\  k  e.  Z )  ->  ( F `  k )  e.  CC )
2524ralrimiva 2639 . . . . . 6  |-  ( ph  ->  A. k  e.  Z  ( F `  k )  e.  CC )
26 fveq2 5541 . . . . . . . 8  |-  ( k  =  M  ->  ( F `  k )  =  ( F `  M ) )
2726eleq1d 2362 . . . . . . 7  |-  ( k  =  M  ->  (
( F `  k
)  e.  CC  <->  ( F `  M )  e.  CC ) )
2827rspcv 2893 . . . . . 6  |-  ( M  e.  Z  ->  ( A. k  e.  Z  ( F `  k )  e.  CC  ->  ( F `  M )  e.  CC ) )
2923, 25, 28sylc 56 . . . . 5  |-  ( ph  ->  ( F `  M
)  e.  CC )
3026fsum1 12230 . . . . 5  |-  ( ( M  e.  ZZ  /\  ( F `  M )  e.  CC )  ->  sum_ k  e.  ( M ... M ) ( F `  k )  =  ( F `  M ) )
313, 29, 30syl2anc 642 . . . 4  |-  ( ph  -> 
sum_ k  e.  ( M ... M ) ( F `  k
)  =  ( F `
 M ) )
3218, 22, 313eqtr2d 2334 . . 3  |-  ( ph  -> 
sum_ k  e.  ( M ... ( ( M  +  1 )  -  1 ) ) A  =  ( F `
 M ) )
3332oveq1d 5889 . 2  |-  ( ph  ->  ( sum_ k  e.  ( M ... ( ( M  +  1 )  -  1 ) ) A  +  sum_ k  e.  ( ZZ>= `  ( M  +  1 ) ) A )  =  ( ( F `  M
)  +  sum_ k  e.  ( ZZ>= `  ( M  +  1 ) ) A ) )
3412, 33eqtrd 2328 1  |-  ( ph  -> 
sum_ k  e.  Z  A  =  ( ( F `  M )  +  sum_ k  e.  (
ZZ>= `  ( M  + 
1 ) ) A ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 358    = wceq 1632    e. wcel 1696   A.wral 2556   dom cdm 4705   ` cfv 5271  (class class class)co 5874   CCcc 8751   1c1 8754    + caddc 8756    - cmin 9053   ZZcz 10040   ZZ>=cuz 10246   ...cfz 10798    seq cseq 11062    ~~> cli 11974   sum_csu 12174
This theorem is referenced by:  isumnn0nn  12317  efsep  12406  rpnnen2lem9  12517
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1536  ax-5 1547  ax-17 1606  ax-9 1644  ax-8 1661  ax-13 1698  ax-14 1700  ax-6 1715  ax-7 1720  ax-11 1727  ax-12 1878  ax-ext 2277  ax-rep 4147  ax-sep 4157  ax-nul 4165  ax-pow 4204  ax-pr 4230  ax-un 4528  ax-inf2 7358  ax-cnex 8809  ax-resscn 8810  ax-1cn 8811  ax-icn 8812  ax-addcl 8813  ax-addrcl 8814  ax-mulcl 8815  ax-mulrcl 8816  ax-mulcom 8817  ax-addass 8818  ax-mulass 8819  ax-distr 8820  ax-i2m1 8821  ax-1ne0 8822  ax-1rid 8823  ax-rnegex 8824  ax-rrecex 8825  ax-cnre 8826  ax-pre-lttri 8827  ax-pre-lttrn 8828  ax-pre-ltadd 8829  ax-pre-mulgt0 8830  ax-pre-sup 8831
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-3or 935  df-3an 936  df-tru 1310  df-ex 1532  df-nf 1535  df-sb 1639  df-eu 2160  df-mo 2161  df-clab 2283  df-cleq 2289  df-clel 2292  df-nfc 2421  df-ne 2461  df-nel 2462  df-ral 2561  df-rex 2562  df-reu 2563  df-rmo 2564  df-rab 2565  df-v 2803  df-sbc 3005  df-csb 3095  df-dif 3168  df-un 3170  df-in 3172  df-ss 3179  df-pss 3181  df-nul 3469  df-if 3579  df-pw 3640  df-sn 3659  df-pr 3660  df-tp 3661  df-op 3662  df-uni 3844  df-int 3879  df-iun 3923  df-br 4040  df-opab 4094  df-mpt 4095  df-tr 4130  df-eprel 4321  df-id 4325  df-po 4330  df-so 4331  df-fr 4368  df-se 4369  df-we 4370  df-ord 4411  df-on 4412  df-lim 4413  df-suc 4414  df-om 4673  df-xp 4711  df-rel 4712  df-cnv 4713  df-co 4714  df-dm 4715  df-rn 4716  df-res 4717  df-ima 4718  df-iota 5235  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-ov 5877  df-oprab 5878  df-mpt2 5879  df-1st 6138  df-2nd 6139  df-riota 6320  df-recs 6404  df-rdg 6439  df-1o 6495  df-oadd 6499  df-er 6676  df-en 6880  df-dom 6881  df-sdom 6882  df-fin 6883  df-sup 7210  df-oi 7241  df-card 7588  df-pnf 8885  df-mnf 8886  df-xr 8887  df-ltxr 8888  df-le 8889  df-sub 9055  df-neg 9056  df-div 9440  df-nn 9763  df-2 9820  df-3 9821  df-n0 9982  df-z 10041  df-uz 10247  df-rp 10371  df-fz 10799  df-fzo 10887  df-seq 11063  df-exp 11121  df-hash 11354  df-cj 11600  df-re 11601  df-im 11602  df-sqr 11736  df-abs 11737  df-clim 11978  df-sum 12175
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