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

Theorem iccneg 9933
Description: Membership in a negated closed real interval. (Contributed by Paul Chapman, 26-Nov-2007.)
Assertion
Ref Expression
iccneg  |-  ( ( A  e.  RR  /\  B  e.  RR  /\  C  e.  RR )  ->  ( C  e.  ( A [,] B )  <->  -u C  e.  ( -u B [,] -u A ) ) )

Proof of Theorem iccneg
StepHypRef Expression
1 renegcl 8167 . . . . 5  |-  ( C  e.  RR  ->  -u C  e.  RR )
2 ax-1 6 . . . . 5  |-  ( C  e.  RR  ->  ( -u C  e.  RR  ->  C  e.  RR ) )
31, 2impbid2 142 . . . 4  |-  ( C  e.  RR  ->  ( C  e.  RR  <->  -u C  e.  RR ) )
433ad2ant3 1015 . . 3  |-  ( ( A  e.  RR  /\  B  e.  RR  /\  C  e.  RR )  ->  ( C  e.  RR  <->  -u C  e.  RR ) )
5 ancom 264 . . . 4  |-  ( ( C  <_  B  /\  A  <_  C )  <->  ( A  <_  C  /\  C  <_  B ) )
6 leneg 8371 . . . . . . 7  |-  ( ( C  e.  RR  /\  B  e.  RR )  ->  ( C  <_  B  <->  -u B  <_  -u C ) )
76ancoms 266 . . . . . 6  |-  ( ( B  e.  RR  /\  C  e.  RR )  ->  ( C  <_  B  <->  -u B  <_  -u C ) )
873adant1 1010 . . . . 5  |-  ( ( A  e.  RR  /\  B  e.  RR  /\  C  e.  RR )  ->  ( C  <_  B  <->  -u B  <_  -u C ) )
9 leneg 8371 . . . . . 6  |-  ( ( A  e.  RR  /\  C  e.  RR )  ->  ( A  <_  C  <->  -u C  <_  -u A ) )
1093adant2 1011 . . . . 5  |-  ( ( A  e.  RR  /\  B  e.  RR  /\  C  e.  RR )  ->  ( A  <_  C  <->  -u C  <_  -u A ) )
118, 10anbi12d 470 . . . 4  |-  ( ( A  e.  RR  /\  B  e.  RR  /\  C  e.  RR )  ->  (
( C  <_  B  /\  A  <_  C )  <-> 
( -u B  <_  -u C  /\  -u C  <_  -u A
) ) )
125, 11bitr3id 193 . . 3  |-  ( ( A  e.  RR  /\  B  e.  RR  /\  C  e.  RR )  ->  (
( A  <_  C  /\  C  <_  B )  <-> 
( -u B  <_  -u C  /\  -u C  <_  -u A
) ) )
134, 12anbi12d 470 . 2  |-  ( ( A  e.  RR  /\  B  e.  RR  /\  C  e.  RR )  ->  (
( C  e.  RR  /\  ( A  <_  C  /\  C  <_  B ) )  <->  ( -u C  e.  RR  /\  ( -u B  <_  -u C  /\  -u C  <_ 
-u A ) ) ) )
14 elicc2 9882 . . . 4  |-  ( ( A  e.  RR  /\  B  e.  RR )  ->  ( C  e.  ( A [,] B )  <-> 
( C  e.  RR  /\  A  <_  C  /\  C  <_  B ) ) )
15143adant3 1012 . . 3  |-  ( ( A  e.  RR  /\  B  e.  RR  /\  C  e.  RR )  ->  ( C  e.  ( A [,] B )  <->  ( C  e.  RR  /\  A  <_  C  /\  C  <_  B
) ) )
16 3anass 977 . . 3  |-  ( ( C  e.  RR  /\  A  <_  C  /\  C  <_  B )  <->  ( C  e.  RR  /\  ( A  <_  C  /\  C  <_  B ) ) )
1715, 16bitrdi 195 . 2  |-  ( ( A  e.  RR  /\  B  e.  RR  /\  C  e.  RR )  ->  ( C  e.  ( A [,] B )  <->  ( C  e.  RR  /\  ( A  <_  C  /\  C  <_  B ) ) ) )
18 renegcl 8167 . . . . 5  |-  ( B  e.  RR  ->  -u B  e.  RR )
19 renegcl 8167 . . . . 5  |-  ( A  e.  RR  ->  -u A  e.  RR )
20 elicc2 9882 . . . . 5  |-  ( (
-u B  e.  RR  /\  -u A  e.  RR )  ->  ( -u C  e.  ( -u B [,] -u A )  <->  ( -u C  e.  RR  /\  -u B  <_ 
-u C  /\  -u C  <_ 
-u A ) ) )
2118, 19, 20syl2anr 288 . . . 4  |-  ( ( A  e.  RR  /\  B  e.  RR )  ->  ( -u C  e.  ( -u B [,] -u A )  <->  ( -u C  e.  RR  /\  -u B  <_ 
-u C  /\  -u C  <_ 
-u A ) ) )
22213adant3 1012 . . 3  |-  ( ( A  e.  RR  /\  B  e.  RR  /\  C  e.  RR )  ->  ( -u C  e.  ( -u B [,] -u A )  <->  ( -u C  e.  RR  /\  -u B  <_ 
-u C  /\  -u C  <_ 
-u A ) ) )
23 3anass 977 . . 3  |-  ( (
-u C  e.  RR  /\  -u B  <_  -u C  /\  -u C  <_  -u A
)  <->  ( -u C  e.  RR  /\  ( -u B  <_  -u C  /\  -u C  <_ 
-u A ) ) )
2422, 23bitrdi 195 . 2  |-  ( ( A  e.  RR  /\  B  e.  RR  /\  C  e.  RR )  ->  ( -u C  e.  ( -u B [,] -u A )  <->  ( -u C  e.  RR  /\  ( -u B  <_  -u C  /\  -u C  <_ 
-u A ) ) ) )
2513, 17, 243bitr4d 219 1  |-  ( ( A  e.  RR  /\  B  e.  RR  /\  C  e.  RR )  ->  ( C  e.  ( A [,] B )  <->  -u C  e.  ( -u B [,] -u A ) ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 103    <-> wb 104    /\ w3a 973    e. wcel 2141   class class class wbr 3987  (class class class)co 5850   RRcr 7760    <_ cle 7942   -ucneg 8078   [,]cicc 9835
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 609  ax-in2 610  ax-io 704  ax-5 1440  ax-7 1441  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-8 1497  ax-10 1498  ax-11 1499  ax-i12 1500  ax-bndl 1502  ax-4 1503  ax-17 1519  ax-i9 1523  ax-ial 1527  ax-i5r 1528  ax-13 2143  ax-14 2144  ax-ext 2152  ax-sep 4105  ax-pow 4158  ax-pr 4192  ax-un 4416  ax-setind 4519  ax-cnex 7852  ax-resscn 7853  ax-1cn 7854  ax-1re 7855  ax-icn 7856  ax-addcl 7857  ax-addrcl 7858  ax-mulcl 7859  ax-addcom 7861  ax-addass 7863  ax-distr 7865  ax-i2m1 7866  ax-0id 7869  ax-rnegex 7870  ax-cnre 7872  ax-pre-ltirr 7873  ax-pre-ltwlin 7874  ax-pre-lttrn 7875  ax-pre-ltadd 7877
This theorem depends on definitions:  df-bi 116  df-3or 974  df-3an 975  df-tru 1351  df-fal 1354  df-nf 1454  df-sb 1756  df-eu 2022  df-mo 2023  df-clab 2157  df-cleq 2163  df-clel 2166  df-nfc 2301  df-ne 2341  df-nel 2436  df-ral 2453  df-rex 2454  df-reu 2455  df-rab 2457  df-v 2732  df-sbc 2956  df-dif 3123  df-un 3125  df-in 3127  df-ss 3134  df-pw 3566  df-sn 3587  df-pr 3588  df-op 3590  df-uni 3795  df-br 3988  df-opab 4049  df-id 4276  df-po 4279  df-iso 4280  df-xp 4615  df-rel 4616  df-cnv 4617  df-co 4618  df-dm 4619  df-iota 5158  df-fun 5198  df-fv 5204  df-riota 5806  df-ov 5853  df-oprab 5854  df-mpo 5855  df-pnf 7943  df-mnf 7944  df-xr 7945  df-ltxr 7946  df-le 7947  df-sub 8079  df-neg 8080  df-icc 9839
This theorem is referenced by: (None)
  Copyright terms: Public domain W3C validator