ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  fsum0diaglem Unicode version

Theorem fsum0diaglem 11160
Description: Lemma for fisum0diag 11161. (Contributed by Mario Carneiro, 28-Apr-2014.) (Revised by Mario Carneiro, 8-Apr-2016.)
Assertion
Ref Expression
fsum0diaglem  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  ( k  e.  ( 0 ... N
)  /\  j  e.  ( 0 ... ( N  -  k )
) ) )
Distinct variable group:    j, k, N

Proof of Theorem fsum0diaglem
StepHypRef Expression
1 elfzle1 9758 . . . . . . 7  |-  ( j  e.  ( 0 ... N )  ->  0  <_  j )
21adantr 272 . . . . . 6  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  0  <_  j
)
3 elfz3nn0 9846 . . . . . . . . . 10  |-  ( j  e.  ( 0 ... N )  ->  N  e.  NN0 )
43adantr 272 . . . . . . . . 9  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  N  e.  NN0 )
54nn0zd 9125 . . . . . . . 8  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  N  e.  ZZ )
65zred 9127 . . . . . . 7  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  N  e.  RR )
7 elfzelz 9757 . . . . . . . . 9  |-  ( j  e.  ( 0 ... N )  ->  j  e.  ZZ )
87adantr 272 . . . . . . . 8  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  j  e.  ZZ )
98zred 9127 . . . . . . 7  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  j  e.  RR )
106, 9subge02d 8262 . . . . . 6  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  ( 0  <_ 
j  <->  ( N  -  j )  <_  N
) )
112, 10mpbid 146 . . . . 5  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  ( N  -  j )  <_  N
)
125, 8zsubcld 9132 . . . . . 6  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  ( N  -  j )  e.  ZZ )
13 eluz 9291 . . . . . 6  |-  ( ( ( N  -  j
)  e.  ZZ  /\  N  e.  ZZ )  ->  ( N  e.  (
ZZ>= `  ( N  -  j ) )  <->  ( N  -  j )  <_  N ) )
1412, 5, 13syl2anc 406 . . . . 5  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  ( N  e.  ( ZZ>= `  ( N  -  j ) )  <-> 
( N  -  j
)  <_  N )
)
1511, 14mpbird 166 . . . 4  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  N  e.  (
ZZ>= `  ( N  -  j ) ) )
16 fzss2 9795 . . . 4  |-  ( N  e.  ( ZZ>= `  ( N  -  j )
)  ->  ( 0 ... ( N  -  j ) )  C_  ( 0 ... N
) )
1715, 16syl 14 . . 3  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  ( 0 ... ( N  -  j
) )  C_  (
0 ... N ) )
18 simpr 109 . . 3  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  k  e.  ( 0 ... ( N  -  j ) ) )
1917, 18sseldd 3066 . 2  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  k  e.  ( 0 ... N ) )
20 elfzelz 9757 . . . . . 6  |-  ( k  e.  ( 0 ... ( N  -  j
) )  ->  k  e.  ZZ )
2120adantl 273 . . . . 5  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  k  e.  ZZ )
2221zred 9127 . . . 4  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  k  e.  RR )
23 elfzle2 9759 . . . . 5  |-  ( k  e.  ( 0 ... ( N  -  j
) )  ->  k  <_  ( N  -  j
) )
2423adantl 273 . . . 4  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  k  <_  ( N  -  j )
)
2522, 6, 9, 24lesubd 8274 . . 3  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  j  <_  ( N  -  k )
)
26 elfzuz 9753 . . . . 5  |-  ( j  e.  ( 0 ... N )  ->  j  e.  ( ZZ>= `  0 )
)
2726adantr 272 . . . 4  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  j  e.  (
ZZ>= `  0 ) )
285, 21zsubcld 9132 . . . 4  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  ( N  -  k )  e.  ZZ )
29 elfz5 9749 . . . 4  |-  ( ( j  e.  ( ZZ>= ` 
0 )  /\  ( N  -  k )  e.  ZZ )  ->  (
j  e.  ( 0 ... ( N  -  k ) )  <->  j  <_  ( N  -  k ) ) )
3027, 28, 29syl2anc 406 . . 3  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  ( j  e.  ( 0 ... ( N  -  k )
)  <->  j  <_  ( N  -  k )
) )
3125, 30mpbird 166 . 2  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  j  e.  ( 0 ... ( N  -  k ) ) )
3219, 31jca 302 1  |-  ( ( j  e.  ( 0 ... N )  /\  k  e.  ( 0 ... ( N  -  j ) ) )  ->  ( k  e.  ( 0 ... N
)  /\  j  e.  ( 0 ... ( N  -  k )
) ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 103    <-> wb 104    e. wcel 1463    C_ wss 3039   class class class wbr 3897   ` cfv 5091  (class class class)co 5740   0cc0 7584    <_ cle 7765    - cmin 7897   NN0cn0 8931   ZZcz 9008   ZZ>=cuz 9278   ...cfz 9741
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 586  ax-in2 587  ax-io 681  ax-5 1406  ax-7 1407  ax-gen 1408  ax-ie1 1452  ax-ie2 1453  ax-8 1465  ax-10 1466  ax-11 1467  ax-i12 1468  ax-bndl 1469  ax-4 1470  ax-13 1474  ax-14 1475  ax-17 1489  ax-i9 1493  ax-ial 1497  ax-i5r 1498  ax-ext 2097  ax-sep 4014  ax-pow 4066  ax-pr 4099  ax-un 4323  ax-setind 4420  ax-cnex 7675  ax-resscn 7676  ax-1cn 7677  ax-1re 7678  ax-icn 7679  ax-addcl 7680  ax-addrcl 7681  ax-mulcl 7682  ax-addcom 7684  ax-addass 7686  ax-distr 7688  ax-i2m1 7689  ax-0lt1 7690  ax-0id 7692  ax-rnegex 7693  ax-cnre 7695  ax-pre-ltirr 7696  ax-pre-ltwlin 7697  ax-pre-lttrn 7698  ax-pre-ltadd 7700
This theorem depends on definitions:  df-bi 116  df-3or 946  df-3an 947  df-tru 1317  df-fal 1320  df-nf 1420  df-sb 1719  df-eu 1978  df-mo 1979  df-clab 2102  df-cleq 2108  df-clel 2111  df-nfc 2245  df-ne 2284  df-nel 2379  df-ral 2396  df-rex 2397  df-reu 2398  df-rab 2400  df-v 2660  df-sbc 2881  df-dif 3041  df-un 3043  df-in 3045  df-ss 3052  df-pw 3480  df-sn 3501  df-pr 3502  df-op 3504  df-uni 3705  df-int 3740  df-br 3898  df-opab 3958  df-mpt 3959  df-id 4183  df-xp 4513  df-rel 4514  df-cnv 4515  df-co 4516  df-dm 4517  df-rn 4518  df-res 4519  df-ima 4520  df-iota 5056  df-fun 5093  df-fn 5094  df-f 5095  df-fv 5099  df-riota 5696  df-ov 5743  df-oprab 5744  df-mpo 5745  df-pnf 7766  df-mnf 7767  df-xr 7768  df-ltxr 7769  df-le 7770  df-sub 7899  df-neg 7900  df-inn 8681  df-n0 8932  df-z 9009  df-uz 9279  df-fz 9742
This theorem is referenced by:  fisum0diag  11161
  Copyright terms: Public domain W3C validator