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

Theorem negiso 8388
Description: Negation is an order anti-isomorphism of the real numbers, which is its own inverse. (Contributed by Mario Carneiro, 24-Dec-2016.)
Hypothesis
Ref Expression
negiso.1  |-  F  =  ( x  e.  RR  |->  -u x )
Assertion
Ref Expression
negiso  |-  ( F 
Isom  <  ,  `'  <  ( RR ,  RR )  /\  `' F  =  F )

Proof of Theorem negiso
Dummy variables  y  z are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 negiso.1 . . . . . 6  |-  F  =  ( x  e.  RR  |->  -u x )
2 simpr 108 . . . . . . 7  |-  ( ( T.  /\  x  e.  RR )  ->  x  e.  RR )
32renegcld 7837 . . . . . 6  |-  ( ( T.  /\  x  e.  RR )  ->  -u x  e.  RR )
4 simpr 108 . . . . . . 7  |-  ( ( T.  /\  y  e.  RR )  ->  y  e.  RR )
54renegcld 7837 . . . . . 6  |-  ( ( T.  /\  y  e.  RR )  ->  -u y  e.  RR )
6 recn 7454 . . . . . . . 8  |-  ( x  e.  RR  ->  x  e.  CC )
7 recn 7454 . . . . . . . 8  |-  ( y  e.  RR  ->  y  e.  CC )
8 negcon2 7714 . . . . . . . 8  |-  ( ( x  e.  CC  /\  y  e.  CC )  ->  ( x  =  -u y 
<->  y  =  -u x
) )
96, 7, 8syl2an 283 . . . . . . 7  |-  ( ( x  e.  RR  /\  y  e.  RR )  ->  ( x  =  -u y 
<->  y  =  -u x
) )
109adantl 271 . . . . . 6  |-  ( ( T.  /\  ( x  e.  RR  /\  y  e.  RR ) )  -> 
( x  =  -u y 
<->  y  =  -u x
) )
111, 3, 5, 10f1ocnv2d 5830 . . . . 5  |-  ( T. 
->  ( F : RR -1-1-onto-> RR  /\  `' F  =  (
y  e.  RR  |->  -u y ) ) )
1211mptru 1298 . . . 4  |-  ( F : RR -1-1-onto-> RR  /\  `' F  =  ( y  e.  RR  |->  -u y ) )
1312simpli 109 . . 3  |-  F : RR
-1-1-onto-> RR
14 simpl 107 . . . . . . . 8  |-  ( ( z  e.  RR  /\  y  e.  RR )  ->  z  e.  RR )
1514recnd 7495 . . . . . . 7  |-  ( ( z  e.  RR  /\  y  e.  RR )  ->  z  e.  CC )
1615negcld 7759 . . . . . 6  |-  ( ( z  e.  RR  /\  y  e.  RR )  -> 
-u z  e.  CC )
177adantl 271 . . . . . . 7  |-  ( ( z  e.  RR  /\  y  e.  RR )  ->  y  e.  CC )
1817negcld 7759 . . . . . 6  |-  ( ( z  e.  RR  /\  y  e.  RR )  -> 
-u y  e.  CC )
19 brcnvg 4605 . . . . . 6  |-  ( (
-u z  e.  CC  /\  -u y  e.  CC )  ->  ( -u z `'  <  -u y  <->  -u y  <  -u z ) )
2016, 18, 19syl2anc 403 . . . . 5  |-  ( ( z  e.  RR  /\  y  e.  RR )  ->  ( -u z `'  <  -u y  <->  -u y  <  -u z ) )
211a1i 9 . . . . . . 7  |-  ( ( z  e.  RR  /\  y  e.  RR )  ->  F  =  ( x  e.  RR  |->  -u x
) )
22 negeq 7654 . . . . . . . 8  |-  ( x  =  z  ->  -u x  =  -u z )
2322adantl 271 . . . . . . 7  |-  ( ( ( z  e.  RR  /\  y  e.  RR )  /\  x  =  z )  ->  -u x  = 
-u z )
2421, 23, 14, 16fvmptd 5369 . . . . . 6  |-  ( ( z  e.  RR  /\  y  e.  RR )  ->  ( F `  z
)  =  -u z
)
25 negeq 7654 . . . . . . . 8  |-  ( x  =  y  ->  -u x  =  -u y )
2625adantl 271 . . . . . . 7  |-  ( ( ( z  e.  RR  /\  y  e.  RR )  /\  x  =  y )  ->  -u x  = 
-u y )
27 simpr 108 . . . . . . 7  |-  ( ( z  e.  RR  /\  y  e.  RR )  ->  y  e.  RR )
2821, 26, 27, 18fvmptd 5369 . . . . . 6  |-  ( ( z  e.  RR  /\  y  e.  RR )  ->  ( F `  y
)  =  -u y
)
2924, 28breq12d 3850 . . . . 5  |-  ( ( z  e.  RR  /\  y  e.  RR )  ->  ( ( F `  z ) `'  <  ( F `  y )  <->  -u z `'  <  -u y
) )
30 ltneg 7919 . . . . 5  |-  ( ( z  e.  RR  /\  y  e.  RR )  ->  ( z  <  y  <->  -u y  <  -u z
) )
3120, 29, 303bitr4rd 219 . . . 4  |-  ( ( z  e.  RR  /\  y  e.  RR )  ->  ( z  <  y  <->  ( F `  z ) `'  <  ( F `  y ) ) )
3231rgen2a 2429 . . 3  |-  A. z  e.  RR  A. y  e.  RR  ( z  < 
y  <->  ( F `  z ) `'  <  ( F `  y ) )
33 df-isom 5011 . . 3  |-  ( F 
Isom  <  ,  `'  <  ( RR ,  RR )  <-> 
( F : RR -1-1-onto-> RR  /\ 
A. z  e.  RR  A. y  e.  RR  (
z  <  y  <->  ( F `  z ) `'  <  ( F `  y ) ) ) )
3413, 32, 33mpbir2an 888 . 2  |-  F  Isom  <  ,  `'  <  ( RR ,  RR )
35 negeq 7654 . . . 4  |-  ( y  =  x  ->  -u y  =  -u x )
3635cbvmptv 3926 . . 3  |-  ( y  e.  RR  |->  -u y
)  =  ( x  e.  RR  |->  -u x
)
3712simpri 111 . . 3  |-  `' F  =  ( y  e.  RR  |->  -u y )
3836, 37, 13eqtr4i 2118 . 2  |-  `' F  =  F
3934, 38pm3.2i 266 1  |-  ( F 
Isom  <  ,  `'  <  ( RR ,  RR )  /\  `' F  =  F )
Colors of variables: wff set class
Syntax hints:    /\ wa 102    <-> wb 103    = wceq 1289   T. wtru 1290    e. wcel 1438   A.wral 2359   class class class wbr 3837    |-> cmpt 3891   `'ccnv 4427   -1-1-onto->wf1o 5001   ` cfv 5002    Isom wiso 5003   CCcc 7327   RRcr 7328    < clt 7501   -ucneg 7633
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-in1 579  ax-in2 580  ax-io 665  ax-5 1381  ax-7 1382  ax-gen 1383  ax-ie1 1427  ax-ie2 1428  ax-8 1440  ax-10 1441  ax-11 1442  ax-i12 1443  ax-bndl 1444  ax-4 1445  ax-13 1449  ax-14 1450  ax-17 1464  ax-i9 1468  ax-ial 1472  ax-i5r 1473  ax-ext 2070  ax-sep 3949  ax-pow 4001  ax-pr 4027  ax-un 4251  ax-setind 4343  ax-cnex 7415  ax-resscn 7416  ax-1cn 7417  ax-1re 7418  ax-icn 7419  ax-addcl 7420  ax-addrcl 7421  ax-mulcl 7422  ax-addcom 7424  ax-addass 7426  ax-distr 7428  ax-i2m1 7429  ax-0id 7432  ax-rnegex 7433  ax-cnre 7435  ax-pre-ltadd 7440
This theorem depends on definitions:  df-bi 115  df-3an 926  df-tru 1292  df-fal 1295  df-nf 1395  df-sb 1693  df-eu 1951  df-mo 1952  df-clab 2075  df-cleq 2081  df-clel 2084  df-nfc 2217  df-ne 2256  df-nel 2351  df-ral 2364  df-rex 2365  df-reu 2366  df-rab 2368  df-v 2621  df-sbc 2839  df-csb 2932  df-dif 2999  df-un 3001  df-in 3003  df-ss 3010  df-pw 3427  df-sn 3447  df-pr 3448  df-op 3450  df-uni 3649  df-br 3838  df-opab 3892  df-mpt 3893  df-id 4111  df-xp 4434  df-rel 4435  df-cnv 4436  df-co 4437  df-dm 4438  df-rn 4439  df-iota 4967  df-fun 5004  df-fn 5005  df-f 5006  df-f1 5007  df-fo 5008  df-f1o 5009  df-fv 5010  df-isom 5011  df-riota 5590  df-ov 5637  df-oprab 5638  df-mpt2 5639  df-pnf 7503  df-mnf 7504  df-ltxr 7506  df-sub 7634  df-neg 7635
This theorem is referenced by:  infrenegsupex  9051
  Copyright terms: Public domain W3C validator