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Theorem ixxssxr 10196
Description: The set of intervals of extended reals maps to subsets of extended reals. (Contributed by Mario Carneiro, 4-Jul-2014.)
Hypothesis
Ref Expression
ixxssxr.1  |-  O  =  ( x  e.  RR* ,  y  e.  RR*  |->  { z  e.  RR*  |  (
x R z  /\  z S y ) } )
Assertion
Ref Expression
ixxssxr  |-  ( A O B )  C_  RR*
Distinct variable groups:    x, y, z, R    x, S, y, z    x, A, y, z    x, B, y, z    x, O, y, z

Proof of Theorem ixxssxr
StepHypRef Expression
1 ixxssxr.1 . . . 4  |-  O  =  ( x  e.  RR* ,  y  e.  RR*  |->  { z  e.  RR*  |  (
x R z  /\  z S y ) } )
21elmpocl 6227 . . 3  |-  ( x  e.  ( A O B )  ->  ( A  e.  RR*  /\  B  e.  RR* ) )
31ixxf 10194 . . . . . 6  |-  O :
( RR*  X.  RR* ) --> ~P RR*
43fovcl 6137 . . . . 5  |-  ( ( A  e.  RR*  /\  B  e.  RR* )  ->  ( A O B )  e. 
~P RR* )
54elpwid 3667 . . . 4  |-  ( ( A  e.  RR*  /\  B  e.  RR* )  ->  ( A O B )  C_  RR* )
65sseld 3227 . . 3  |-  ( ( A  e.  RR*  /\  B  e.  RR* )  ->  (
x  e.  ( A O B )  ->  x  e.  RR* ) )
72, 6mpcom 36 . 2  |-  ( x  e.  ( A O B )  ->  x  e.  RR* )
87ssriv 3232 1  |-  ( A O B )  C_  RR*
Colors of variables: wff set class
Syntax hints:    /\ wa 104    = wceq 1398    e. wcel 2202   {crab 2515    C_ wss 3201   ~Pcpw 3656   class class class wbr 4093  (class class class)co 6028    e. cmpo 6030   RR*cxr 8272
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-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-13 2204  ax-14 2205  ax-ext 2213  ax-sep 4212  ax-pow 4270  ax-pr 4305  ax-un 4536  ax-cnex 8183  ax-resscn 8184
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2364  df-ral 2516  df-rex 2517  df-rab 2520  df-v 2805  df-sbc 3033  df-csb 3129  df-un 3205  df-in 3207  df-ss 3214  df-pw 3658  df-sn 3679  df-pr 3680  df-op 3682  df-uni 3899  df-iun 3977  df-br 4094  df-opab 4156  df-mpt 4157  df-id 4396  df-xp 4737  df-rel 4738  df-cnv 4739  df-co 4740  df-dm 4741  df-rn 4742  df-res 4743  df-ima 4744  df-iota 5293  df-fun 5335  df-fn 5336  df-f 5337  df-fv 5341  df-ov 6031  df-oprab 6032  df-mpo 6033  df-1st 6312  df-2nd 6313  df-pnf 8275  df-mnf 8276  df-xr 8277
This theorem is referenced by:  iccssxr  10252  iocssxr  10253  icossxr  10254
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