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Theorem eqreznegel 9552
Description: Two ways to express the image under negation of a set of integers. (Contributed by Paul Chapman, 21-Mar-2011.)
Assertion
Ref Expression
eqreznegel  |-  ( A 
C_  ZZ  ->  { z  e.  RR  |  -u z  e.  A }  =  { z  e.  ZZ  |  -u z  e.  A } )
Distinct variable group:    z, A

Proof of Theorem eqreznegel
Dummy variable  w is distinct from all other variables.
StepHypRef Expression
1 ssel 3136 . . . . . . . 8  |-  ( A 
C_  ZZ  ->  ( -u w  e.  A  ->  -u w  e.  ZZ )
)
2 recn 7886 . . . . . . . . 9  |-  ( w  e.  RR  ->  w  e.  CC )
3 negid 8145 . . . . . . . . . . . 12  |-  ( w  e.  CC  ->  (
w  +  -u w
)  =  0 )
4 0z 9202 . . . . . . . . . . . 12  |-  0  e.  ZZ
53, 4eqeltrdi 2257 . . . . . . . . . . 11  |-  ( w  e.  CC  ->  (
w  +  -u w
)  e.  ZZ )
65pm4.71i 389 . . . . . . . . . 10  |-  ( w  e.  CC  <->  ( w  e.  CC  /\  ( w  +  -u w )  e.  ZZ ) )
7 zrevaddcl 9241 . . . . . . . . . 10  |-  ( -u w  e.  ZZ  ->  ( ( w  e.  CC  /\  ( w  +  -u w )  e.  ZZ ) 
<->  w  e.  ZZ ) )
86, 7syl5bb 191 . . . . . . . . 9  |-  ( -u w  e.  ZZ  ->  ( w  e.  CC  <->  w  e.  ZZ ) )
92, 8syl5ib 153 . . . . . . . 8  |-  ( -u w  e.  ZZ  ->  ( w  e.  RR  ->  w  e.  ZZ ) )
101, 9syl6 33 . . . . . . 7  |-  ( A 
C_  ZZ  ->  ( -u w  e.  A  ->  ( w  e.  RR  ->  w  e.  ZZ ) ) )
1110com23 78 . . . . . 6  |-  ( A 
C_  ZZ  ->  ( w  e.  RR  ->  ( -u w  e.  A  ->  w  e.  ZZ )
) )
1211impd 252 . . . . 5  |-  ( A 
C_  ZZ  ->  ( ( w  e.  RR  /\  -u w  e.  A )  ->  w  e.  ZZ ) )
13 simpr 109 . . . . . 6  |-  ( ( w  e.  RR  /\  -u w  e.  A )  ->  -u w  e.  A
)
1413a1i 9 . . . . 5  |-  ( A 
C_  ZZ  ->  ( ( w  e.  RR  /\  -u w  e.  A )  ->  -u w  e.  A
) )
1512, 14jcad 305 . . . 4  |-  ( A 
C_  ZZ  ->  ( ( w  e.  RR  /\  -u w  e.  A )  ->  ( w  e.  ZZ  /\  -u w  e.  A ) ) )
16 zre 9195 . . . . 5  |-  ( w  e.  ZZ  ->  w  e.  RR )
1716anim1i 338 . . . 4  |-  ( ( w  e.  ZZ  /\  -u w  e.  A )  ->  ( w  e.  RR  /\  -u w  e.  A ) )
1815, 17impbid1 141 . . 3  |-  ( A 
C_  ZZ  ->  ( ( w  e.  RR  /\  -u w  e.  A )  <-> 
( w  e.  ZZ  /\  -u w  e.  A
) ) )
19 negeq 8091 . . . . 5  |-  ( z  =  w  ->  -u z  =  -u w )
2019eleq1d 2235 . . . 4  |-  ( z  =  w  ->  ( -u z  e.  A  <->  -u w  e.  A ) )
2120elrab 2882 . . 3  |-  ( w  e.  { z  e.  RR  |  -u z  e.  A }  <->  ( w  e.  RR  /\  -u w  e.  A ) )
2220elrab 2882 . . 3  |-  ( w  e.  { z  e.  ZZ  |  -u z  e.  A }  <->  ( w  e.  ZZ  /\  -u w  e.  A ) )
2318, 21, 223bitr4g 222 . 2  |-  ( A 
C_  ZZ  ->  ( w  e.  { z  e.  RR  |  -u z  e.  A }  <->  w  e.  { z  e.  ZZ  |  -u z  e.  A }
) )
2423eqrdv 2163 1  |-  ( A 
C_  ZZ  ->  { z  e.  RR  |  -u z  e.  A }  =  { z  e.  ZZ  |  -u z  e.  A } )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 103    = wceq 1343    e. wcel 2136   {crab 2448    C_ wss 3116  (class class class)co 5842   CCcc 7751   RRcr 7752   0cc0 7753    + caddc 7756   -ucneg 8070   ZZcz 9191
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 604  ax-in2 605  ax-io 699  ax-5 1435  ax-7 1436  ax-gen 1437  ax-ie1 1481  ax-ie2 1482  ax-8 1492  ax-10 1493  ax-11 1494  ax-i12 1495  ax-bndl 1497  ax-4 1498  ax-17 1514  ax-i9 1518  ax-ial 1522  ax-i5r 1523  ax-13 2138  ax-14 2139  ax-ext 2147  ax-sep 4100  ax-pow 4153  ax-pr 4187  ax-un 4411  ax-setind 4514  ax-cnex 7844  ax-resscn 7845  ax-1cn 7846  ax-1re 7847  ax-icn 7848  ax-addcl 7849  ax-addrcl 7850  ax-mulcl 7851  ax-addcom 7853  ax-addass 7855  ax-distr 7857  ax-i2m1 7858  ax-0lt1 7859  ax-0id 7861  ax-rnegex 7862  ax-cnre 7864  ax-pre-ltirr 7865  ax-pre-ltwlin 7866  ax-pre-lttrn 7867  ax-pre-ltadd 7869
This theorem depends on definitions:  df-bi 116  df-3or 969  df-3an 970  df-tru 1346  df-fal 1349  df-nf 1449  df-sb 1751  df-eu 2017  df-mo 2018  df-clab 2152  df-cleq 2158  df-clel 2161  df-nfc 2297  df-ne 2337  df-nel 2432  df-ral 2449  df-rex 2450  df-reu 2451  df-rab 2453  df-v 2728  df-sbc 2952  df-dif 3118  df-un 3120  df-in 3122  df-ss 3129  df-pw 3561  df-sn 3582  df-pr 3583  df-op 3585  df-uni 3790  df-int 3825  df-br 3983  df-opab 4044  df-id 4271  df-xp 4610  df-rel 4611  df-cnv 4612  df-co 4613  df-dm 4614  df-iota 5153  df-fun 5190  df-fv 5196  df-riota 5798  df-ov 5845  df-oprab 5846  df-mpo 5847  df-pnf 7935  df-mnf 7936  df-xr 7937  df-ltxr 7938  df-le 7939  df-sub 8071  df-neg 8072  df-inn 8858  df-n0 9115  df-z 9192
This theorem is referenced by: (None)
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