MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  iccneg Unicode version

Theorem iccneg 10773
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 9126 . . . . 5  |-  ( C  e.  RR  ->  -u C  e.  RR )
2 ax-1 5 . . . . 5  |-  ( C  e.  RR  ->  ( -u C  e.  RR  ->  C  e.  RR ) )
31, 2impbid2 195 . . . 4  |-  ( C  e.  RR  ->  ( C  e.  RR  <->  -u C  e.  RR ) )
433ad2ant3 978 . . 3  |-  ( ( A  e.  RR  /\  B  e.  RR  /\  C  e.  RR )  ->  ( C  e.  RR  <->  -u C  e.  RR ) )
5 ancom 437 . . . 4  |-  ( ( C  <_  B  /\  A  <_  C )  <->  ( A  <_  C  /\  C  <_  B ) )
6 leneg 9293 . . . . . . 7  |-  ( ( C  e.  RR  /\  B  e.  RR )  ->  ( C  <_  B  <->  -u B  <_  -u C ) )
76ancoms 439 . . . . . 6  |-  ( ( B  e.  RR  /\  C  e.  RR )  ->  ( C  <_  B  <->  -u B  <_  -u C ) )
873adant1 973 . . . . 5  |-  ( ( A  e.  RR  /\  B  e.  RR  /\  C  e.  RR )  ->  ( C  <_  B  <->  -u B  <_  -u C ) )
9 leneg 9293 . . . . . 6  |-  ( ( A  e.  RR  /\  C  e.  RR )  ->  ( A  <_  C  <->  -u C  <_  -u A ) )
1093adant2 974 . . . . 5  |-  ( ( A  e.  RR  /\  B  e.  RR  /\  C  e.  RR )  ->  ( A  <_  C  <->  -u C  <_  -u A ) )
118, 10anbi12d 691 . . . 4  |-  ( ( A  e.  RR  /\  B  e.  RR  /\  C  e.  RR )  ->  (
( C  <_  B  /\  A  <_  C )  <-> 
( -u B  <_  -u C  /\  -u C  <_  -u A
) ) )
125, 11syl5bbr 250 . . 3  |-  ( ( A  e.  RR  /\  B  e.  RR  /\  C  e.  RR )  ->  (
( A  <_  C  /\  C  <_  B )  <-> 
( -u B  <_  -u C  /\  -u C  <_  -u A
) ) )
134, 12anbi12d 691 . 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 10731 . . . 4  |-  ( ( A  e.  RR  /\  B  e.  RR )  ->  ( C  e.  ( A [,] B )  <-> 
( C  e.  RR  /\  A  <_  C  /\  C  <_  B ) ) )
15143adant3 975 . . 3  |-  ( ( A  e.  RR  /\  B  e.  RR  /\  C  e.  RR )  ->  ( C  e.  ( A [,] B )  <->  ( C  e.  RR  /\  A  <_  C  /\  C  <_  B
) ) )
16 3anass 938 . . 3  |-  ( ( C  e.  RR  /\  A  <_  C  /\  C  <_  B )  <->  ( C  e.  RR  /\  ( A  <_  C  /\  C  <_  B ) ) )
1715, 16syl6bb 252 . 2  |-  ( ( A  e.  RR  /\  B  e.  RR  /\  C  e.  RR )  ->  ( C  e.  ( A [,] B )  <->  ( C  e.  RR  /\  ( A  <_  C  /\  C  <_  B ) ) ) )
18 renegcl 9126 . . . . 5  |-  ( B  e.  RR  ->  -u B  e.  RR )
19 renegcl 9126 . . . . 5  |-  ( A  e.  RR  ->  -u A  e.  RR )
20 elicc2 10731 . . . . 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 464 . . . 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 975 . . 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 938 . . 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, 23syl6bb 252 . 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 276 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    <-> wb 176    /\ wa 358    /\ w3a 934    e. wcel 1696   class class class wbr 4039  (class class class)co 5874   RRcr 8752    <_ cle 8884   -ucneg 9054   [,]cicc 10675
This theorem is referenced by:  xrhmeo  18460  dvivth  19373
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1536  ax-5 1547  ax-17 1606  ax-9 1644  ax-8 1661  ax-13 1698  ax-14 1700  ax-6 1715  ax-7 1720  ax-11 1727  ax-12 1878  ax-ext 2277  ax-sep 4157  ax-nul 4165  ax-pow 4204  ax-pr 4230  ax-un 4528  ax-cnex 8809  ax-resscn 8810  ax-1cn 8811  ax-icn 8812  ax-addcl 8813  ax-addrcl 8814  ax-mulcl 8815  ax-mulrcl 8816  ax-mulcom 8817  ax-addass 8818  ax-mulass 8819  ax-distr 8820  ax-i2m1 8821  ax-1ne0 8822  ax-1rid 8823  ax-rnegex 8824  ax-rrecex 8825  ax-cnre 8826  ax-pre-lttri 8827  ax-pre-lttrn 8828  ax-pre-ltadd 8829
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-3or 935  df-3an 936  df-tru 1310  df-ex 1532  df-nf 1535  df-sb 1639  df-eu 2160  df-mo 2161  df-clab 2283  df-cleq 2289  df-clel 2292  df-nfc 2421  df-ne 2461  df-nel 2462  df-ral 2561  df-rex 2562  df-reu 2563  df-rab 2565  df-v 2803  df-sbc 3005  df-csb 3095  df-dif 3168  df-un 3170  df-in 3172  df-ss 3179  df-nul 3469  df-if 3579  df-pw 3640  df-sn 3659  df-pr 3660  df-op 3662  df-uni 3844  df-br 4040  df-opab 4094  df-mpt 4095  df-id 4325  df-po 4330  df-so 4331  df-xp 4711  df-rel 4712  df-cnv 4713  df-co 4714  df-dm 4715  df-rn 4716  df-res 4717  df-ima 4718  df-iota 5235  df-fun 5273  df-fn 5274  df-f 5275  df-f1 5276  df-fo 5277  df-f1o 5278  df-fv 5279  df-ov 5877  df-oprab 5878  df-mpt2 5879  df-riota 6320  df-er 6676  df-en 6880  df-dom 6881  df-sdom 6882  df-pnf 8885  df-mnf 8886  df-xr 8887  df-ltxr 8888  df-le 8889  df-sub 9055  df-neg 9056  df-icc 10679
  Copyright terms: Public domain W3C validator