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Theorem ubmelm1fzo 9996
Description: The result of subtracting 1 and an integer of a half-open range of nonnegative integers from the upper bound of this range is contained in this range. (Contributed by AV, 23-Mar-2018.) (Revised by AV, 30-Oct-2018.)
Assertion
Ref Expression
ubmelm1fzo  |-  ( K  e.  ( 0..^ N )  ->  ( ( N  -  K )  -  1 )  e.  ( 0..^ N ) )

Proof of Theorem ubmelm1fzo
StepHypRef Expression
1 elfzo0 9952 . 2  |-  ( K  e.  ( 0..^ N )  <->  ( K  e. 
NN0  /\  N  e.  NN  /\  K  <  N
) )
2 nnz 9066 . . . . . . . . 9  |-  ( N  e.  NN  ->  N  e.  ZZ )
32adantr 274 . . . . . . . 8  |-  ( ( N  e.  NN  /\  K  e.  NN0 )  ->  N  e.  ZZ )
4 nn0z 9067 . . . . . . . . 9  |-  ( K  e.  NN0  ->  K  e.  ZZ )
54adantl 275 . . . . . . . 8  |-  ( ( N  e.  NN  /\  K  e.  NN0 )  ->  K  e.  ZZ )
63, 5zsubcld 9171 . . . . . . 7  |-  ( ( N  e.  NN  /\  K  e.  NN0 )  -> 
( N  -  K
)  e.  ZZ )
76ancoms 266 . . . . . 6  |-  ( ( K  e.  NN0  /\  N  e.  NN )  ->  ( N  -  K
)  e.  ZZ )
8 peano2zm 9085 . . . . . 6  |-  ( ( N  -  K )  e.  ZZ  ->  (
( N  -  K
)  -  1 )  e.  ZZ )
97, 8syl 14 . . . . 5  |-  ( ( K  e.  NN0  /\  N  e.  NN )  ->  ( ( N  -  K )  -  1 )  e.  ZZ )
1093adant3 1001 . . . 4  |-  ( ( K  e.  NN0  /\  N  e.  NN  /\  K  <  N )  ->  (
( N  -  K
)  -  1 )  e.  ZZ )
11 simp3 983 . . . . . 6  |-  ( ( K  e.  NN0  /\  N  e.  NN  /\  K  <  N )  ->  K  <  N )
124, 2anim12i 336 . . . . . . . 8  |-  ( ( K  e.  NN0  /\  N  e.  NN )  ->  ( K  e.  ZZ  /\  N  e.  ZZ ) )
13123adant3 1001 . . . . . . 7  |-  ( ( K  e.  NN0  /\  N  e.  NN  /\  K  <  N )  ->  ( K  e.  ZZ  /\  N  e.  ZZ ) )
14 znnsub 9098 . . . . . . 7  |-  ( ( K  e.  ZZ  /\  N  e.  ZZ )  ->  ( K  <  N  <->  ( N  -  K )  e.  NN ) )
1513, 14syl 14 . . . . . 6  |-  ( ( K  e.  NN0  /\  N  e.  NN  /\  K  <  N )  ->  ( K  <  N  <->  ( N  -  K )  e.  NN ) )
1611, 15mpbid 146 . . . . 5  |-  ( ( K  e.  NN0  /\  N  e.  NN  /\  K  <  N )  ->  ( N  -  K )  e.  NN )
17 nnm1ge0 9130 . . . . 5  |-  ( ( N  -  K )  e.  NN  ->  0  <_  ( ( N  -  K )  -  1 ) )
1816, 17syl 14 . . . 4  |-  ( ( K  e.  NN0  /\  N  e.  NN  /\  K  <  N )  ->  0  <_  ( ( N  -  K )  -  1 ) )
19 elnn0z 9060 . . . 4  |-  ( ( ( N  -  K
)  -  1 )  e.  NN0  <->  ( ( ( N  -  K )  -  1 )  e.  ZZ  /\  0  <_ 
( ( N  -  K )  -  1 ) ) )
2010, 18, 19sylanbrc 413 . . 3  |-  ( ( K  e.  NN0  /\  N  e.  NN  /\  K  <  N )  ->  (
( N  -  K
)  -  1 )  e.  NN0 )
21 simp2 982 . . 3  |-  ( ( K  e.  NN0  /\  N  e.  NN  /\  K  <  N )  ->  N  e.  NN )
22 nncn 8721 . . . . . . 7  |-  ( N  e.  NN  ->  N  e.  CC )
2322adantl 275 . . . . . 6  |-  ( ( K  e.  NN0  /\  N  e.  NN )  ->  N  e.  CC )
24 nn0cn 8980 . . . . . . 7  |-  ( K  e.  NN0  ->  K  e.  CC )
2524adantr 274 . . . . . 6  |-  ( ( K  e.  NN0  /\  N  e.  NN )  ->  K  e.  CC )
26 1cnd 7775 . . . . . 6  |-  ( ( K  e.  NN0  /\  N  e.  NN )  ->  1  e.  CC )
2723, 25, 26subsub4d 8097 . . . . 5  |-  ( ( K  e.  NN0  /\  N  e.  NN )  ->  ( ( N  -  K )  -  1 )  =  ( N  -  ( K  + 
1 ) ) )
28 nn0p1gt0 8999 . . . . . . 7  |-  ( K  e.  NN0  ->  0  < 
( K  +  1 ) )
2928adantr 274 . . . . . 6  |-  ( ( K  e.  NN0  /\  N  e.  NN )  ->  0  <  ( K  +  1 ) )
30 nn0re 8979 . . . . . . . 8  |-  ( K  e.  NN0  ->  K  e.  RR )
31 peano2re 7891 . . . . . . . 8  |-  ( K  e.  RR  ->  ( K  +  1 )  e.  RR )
3230, 31syl 14 . . . . . . 7  |-  ( K  e.  NN0  ->  ( K  +  1 )  e.  RR )
33 nnre 8720 . . . . . . 7  |-  ( N  e.  NN  ->  N  e.  RR )
34 ltsubpos 8209 . . . . . . 7  |-  ( ( ( K  +  1 )  e.  RR  /\  N  e.  RR )  ->  ( 0  <  ( K  +  1 )  <-> 
( N  -  ( K  +  1 ) )  <  N ) )
3532, 33, 34syl2an 287 . . . . . 6  |-  ( ( K  e.  NN0  /\  N  e.  NN )  ->  ( 0  <  ( K  +  1 )  <-> 
( N  -  ( K  +  1 ) )  <  N ) )
3629, 35mpbid 146 . . . . 5  |-  ( ( K  e.  NN0  /\  N  e.  NN )  ->  ( N  -  ( K  +  1 ) )  <  N )
3727, 36eqbrtrd 3945 . . . 4  |-  ( ( K  e.  NN0  /\  N  e.  NN )  ->  ( ( N  -  K )  -  1 )  <  N )
38373adant3 1001 . . 3  |-  ( ( K  e.  NN0  /\  N  e.  NN  /\  K  <  N )  ->  (
( N  -  K
)  -  1 )  <  N )
39 elfzo0 9952 . . 3  |-  ( ( ( N  -  K
)  -  1 )  e.  ( 0..^ N )  <->  ( ( ( N  -  K )  -  1 )  e. 
NN0  /\  N  e.  NN  /\  ( ( N  -  K )  - 
1 )  <  N
) )
4020, 21, 38, 39syl3anbrc 1165 . 2  |-  ( ( K  e.  NN0  /\  N  e.  NN  /\  K  <  N )  ->  (
( N  -  K
)  -  1 )  e.  ( 0..^ N ) )
411, 40sylbi 120 1  |-  ( K  e.  ( 0..^ N )  ->  ( ( N  -  K )  -  1 )  e.  ( 0..^ N ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 103    <-> wb 104    /\ w3a 962    e. wcel 1480   class class class wbr 3924  (class class class)co 5767   CCcc 7611   RRcr 7612   0cc0 7613   1c1 7614    + caddc 7616    < clt 7793    <_ cle 7794    - cmin 7926   NNcn 8713   NN0cn0 8970   ZZcz 9047  ..^cfzo 9912
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 603  ax-in2 604  ax-io 698  ax-5 1423  ax-7 1424  ax-gen 1425  ax-ie1 1469  ax-ie2 1470  ax-8 1482  ax-10 1483  ax-11 1484  ax-i12 1485  ax-bndl 1486  ax-4 1487  ax-13 1491  ax-14 1492  ax-17 1506  ax-i9 1510  ax-ial 1514  ax-i5r 1515  ax-ext 2119  ax-sep 4041  ax-pow 4093  ax-pr 4126  ax-un 4350  ax-setind 4447  ax-cnex 7704  ax-resscn 7705  ax-1cn 7706  ax-1re 7707  ax-icn 7708  ax-addcl 7709  ax-addrcl 7710  ax-mulcl 7711  ax-addcom 7713  ax-addass 7715  ax-distr 7717  ax-i2m1 7718  ax-0lt1 7719  ax-0id 7721  ax-rnegex 7722  ax-cnre 7724  ax-pre-ltirr 7725  ax-pre-ltwlin 7726  ax-pre-lttrn 7727  ax-pre-ltadd 7729
This theorem depends on definitions:  df-bi 116  df-3or 963  df-3an 964  df-tru 1334  df-fal 1337  df-nf 1437  df-sb 1736  df-eu 2000  df-mo 2001  df-clab 2124  df-cleq 2130  df-clel 2133  df-nfc 2268  df-ne 2307  df-nel 2402  df-ral 2419  df-rex 2420  df-reu 2421  df-rab 2423  df-v 2683  df-sbc 2905  df-csb 2999  df-dif 3068  df-un 3070  df-in 3072  df-ss 3079  df-pw 3507  df-sn 3528  df-pr 3529  df-op 3531  df-uni 3732  df-int 3767  df-iun 3810  df-br 3925  df-opab 3985  df-mpt 3986  df-id 4210  df-xp 4540  df-rel 4541  df-cnv 4542  df-co 4543  df-dm 4544  df-rn 4545  df-res 4546  df-ima 4547  df-iota 5083  df-fun 5120  df-fn 5121  df-f 5122  df-fv 5126  df-riota 5723  df-ov 5770  df-oprab 5771  df-mpo 5772  df-1st 6031  df-2nd 6032  df-pnf 7795  df-mnf 7796  df-xr 7797  df-ltxr 7798  df-le 7799  df-sub 7928  df-neg 7929  df-inn 8714  df-n0 8971  df-z 9048  df-uz 9320  df-fz 9784  df-fzo 9913
This theorem is referenced by: (None)
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