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

Theorem uzdisj 10454
Description: The first  N elements of an upper integer set are distinct from any later members. (Contributed by Mario Carneiro, 24-Apr-2014.)
Assertion
Ref Expression
uzdisj  |-  ( ( M ... ( N  -  1 ) )  i^i  ( ZZ>= `  N
) )  =  (/)

Proof of Theorem uzdisj
Dummy variable  k is distinct from all other variables.
StepHypRef Expression
1 elin 3406 . . . . . . 7  |-  ( k  e.  ( ( M ... ( N  - 
1 ) )  i^i  ( ZZ>= `  N )
)  <->  ( k  e.  ( M ... ( N  -  1 ) )  /\  k  e.  ( ZZ>= `  N )
) )
21simprbi 275 . . . . . 6  |-  ( k  e.  ( ( M ... ( N  - 
1 ) )  i^i  ( ZZ>= `  N )
)  ->  k  e.  ( ZZ>= `  N )
)
3 eluzle 9889 . . . . . 6  |-  ( k  e.  ( ZZ>= `  N
)  ->  N  <_  k )
42, 3syl 14 . . . . 5  |-  ( k  e.  ( ( M ... ( N  - 
1 ) )  i^i  ( ZZ>= `  N )
)  ->  N  <_  k )
5 eluzel2 9881 . . . . . . 7  |-  ( k  e.  ( ZZ>= `  N
)  ->  N  e.  ZZ )
62, 5syl 14 . . . . . 6  |-  ( k  e.  ( ( M ... ( N  - 
1 ) )  i^i  ( ZZ>= `  N )
)  ->  N  e.  ZZ )
7 eluzelz 9886 . . . . . . 7  |-  ( k  e.  ( ZZ>= `  N
)  ->  k  e.  ZZ )
82, 7syl 14 . . . . . 6  |-  ( k  e.  ( ( M ... ( N  - 
1 ) )  i^i  ( ZZ>= `  N )
)  ->  k  e.  ZZ )
9 zlem1lt 9656 . . . . . 6  |-  ( ( N  e.  ZZ  /\  k  e.  ZZ )  ->  ( N  <_  k  <->  ( N  -  1 )  <  k ) )
106, 8, 9syl2anc 411 . . . . 5  |-  ( k  e.  ( ( M ... ( N  - 
1 ) )  i^i  ( ZZ>= `  N )
)  ->  ( N  <_  k  <->  ( N  - 
1 )  <  k
) )
114, 10mpbid 147 . . . 4  |-  ( k  e.  ( ( M ... ( N  - 
1 ) )  i^i  ( ZZ>= `  N )
)  ->  ( N  -  1 )  < 
k )
121simplbi 274 . . . . . 6  |-  ( k  e.  ( ( M ... ( N  - 
1 ) )  i^i  ( ZZ>= `  N )
)  ->  k  e.  ( M ... ( N  -  1 ) ) )
13 elfzle2 10387 . . . . . 6  |-  ( k  e.  ( M ... ( N  -  1
) )  ->  k  <_  ( N  -  1 ) )
1412, 13syl 14 . . . . 5  |-  ( k  e.  ( ( M ... ( N  - 
1 ) )  i^i  ( ZZ>= `  N )
)  ->  k  <_  ( N  -  1 ) )
158zred 9723 . . . . . 6  |-  ( k  e.  ( ( M ... ( N  - 
1 ) )  i^i  ( ZZ>= `  N )
)  ->  k  e.  RR )
16 peano2zm 9637 . . . . . . . 8  |-  ( N  e.  ZZ  ->  ( N  -  1 )  e.  ZZ )
176, 16syl 14 . . . . . . 7  |-  ( k  e.  ( ( M ... ( N  - 
1 ) )  i^i  ( ZZ>= `  N )
)  ->  ( N  -  1 )  e.  ZZ )
1817zred 9723 . . . . . 6  |-  ( k  e.  ( ( M ... ( N  - 
1 ) )  i^i  ( ZZ>= `  N )
)  ->  ( N  -  1 )  e.  RR )
1915, 18lenltd 8410 . . . . 5  |-  ( k  e.  ( ( M ... ( N  - 
1 ) )  i^i  ( ZZ>= `  N )
)  ->  ( k  <_  ( N  -  1 )  <->  -.  ( N  -  1 )  < 
k ) )
2014, 19mpbid 147 . . . 4  |-  ( k  e.  ( ( M ... ( N  - 
1 ) )  i^i  ( ZZ>= `  N )
)  ->  -.  ( N  -  1 )  <  k )
2111, 20pm2.21dd 625 . . 3  |-  ( k  e.  ( ( M ... ( N  - 
1 ) )  i^i  ( ZZ>= `  N )
)  ->  k  e.  (/) )
2221ssriv 3246 . 2  |-  ( ( M ... ( N  -  1 ) )  i^i  ( ZZ>= `  N
) )  C_  (/)
23 ss0 3553 . 2  |-  ( ( ( M ... ( N  -  1 ) )  i^i  ( ZZ>= `  N ) )  C_  (/) 
->  ( ( M ... ( N  -  1
) )  i^i  ( ZZ>=
`  N ) )  =  (/) )
2422, 23ax-mp 5 1  |-  ( ( M ... ( N  -  1 ) )  i^i  ( ZZ>= `  N
) )  =  (/)
Colors of variables: wff set class
Syntax hints:   -. wn 3    <-> wb 105    = wceq 1398    e. wcel 2205    i^i cin 3213    C_ wss 3214   (/)c0 3512   class class class wbr 4115   ` cfv 5359  (class class class)co 6060   1c1 8146    < clt 8326    <_ cle 8327    - cmin 8463   ZZcz 9599   ZZ>=cuz 9876   ...cfz 10366
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 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-14 2208  ax-ext 2216  ax-sep 4234  ax-pow 4293  ax-pr 4328  ax-un 4560  ax-setind 4666  ax-cnex 8236  ax-resscn 8237  ax-1cn 8238  ax-1re 8239  ax-icn 8240  ax-addcl 8241  ax-addrcl 8242  ax-mulcl 8243  ax-addcom 8245  ax-addass 8247  ax-distr 8249  ax-i2m1 8250  ax-0lt1 8251  ax-0id 8253  ax-rnegex 8254  ax-cnre 8256  ax-pre-ltirr 8257  ax-pre-ltwlin 8258  ax-pre-lttrn 8259  ax-pre-ltadd 8261
This theorem depends on definitions:  df-bi 117  df-3or 1006  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-nel 2510  df-ral 2527  df-rex 2528  df-reu 2529  df-rab 2531  df-v 2817  df-sbc 3046  df-dif 3216  df-un 3218  df-in 3220  df-ss 3227  df-nul 3513  df-pw 3677  df-sn 3701  df-pr 3702  df-op 3704  df-uni 3921  df-int 3956  df-br 4116  df-opab 4178  df-mpt 4179  df-id 4420  df-xp 4762  df-rel 4763  df-cnv 4764  df-co 4765  df-dm 4766  df-rn 4767  df-res 4768  df-ima 4769  df-iota 5319  df-fun 5361  df-fn 5362  df-f 5363  df-fv 5367  df-riota 6013  df-ov 6063  df-oprab 6064  df-mpo 6065  df-pnf 8328  df-mnf 8329  df-xr 8330  df-ltxr 8331  df-le 8332  df-sub 8465  df-neg 8466  df-inn 9260  df-n0 9519  df-z 9600  df-uz 9877  df-fz 10367
This theorem is referenced by:  2prm  12855
  Copyright terms: Public domain W3C validator