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Theorem icof 39411
Description: The set of left-closed right-open intervals of extended reals maps to subsets of extended reals. (Contributed by Glauco Siliprandi, 3-Mar-2021.)
Assertion
Ref Expression
icof  |-  [,) :
( RR*  X.  RR* ) --> ~P RR*

Proof of Theorem icof
Dummy variables  x  y  z are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 eqidd 2623 . . . 4  |-  ( ( x  e.  RR*  /\  y  e.  RR* )  ->  { z  e.  RR*  |  (
x  <_  z  /\  z  <  y ) }  =  { z  e. 
RR*  |  ( x  <_  z  /\  z  < 
y ) } )
2 ssrab2 3687 . . . . 5  |-  { z  e.  RR*  |  (
x  <_  z  /\  z  <  y ) } 
C_  RR*
3 xrex 11829 . . . . . . 7  |-  RR*  e.  _V
43rabex 4813 . . . . . 6  |-  { z  e.  RR*  |  (
x  <_  z  /\  z  <  y ) }  e.  _V
54elpw 4164 . . . . 5  |-  ( { z  e.  RR*  |  ( x  <_  z  /\  z  <  y ) }  e.  ~P RR*  <->  { z  e.  RR*  |  ( x  <_  z  /\  z  <  y ) }  C_  RR* )
62, 5mpbir 221 . . . 4  |-  { z  e.  RR*  |  (
x  <_  z  /\  z  <  y ) }  e.  ~P RR*
71, 6syl6eqelr 2710 . . 3  |-  ( ( x  e.  RR*  /\  y  e.  RR* )  ->  { z  e.  RR*  |  (
x  <_  z  /\  z  <  y ) }  e.  ~P RR* )
87rgen2a 2977 . 2  |-  A. x  e.  RR*  A. y  e. 
RR*  { z  e.  RR*  |  ( x  <_  z  /\  z  <  y ) }  e.  ~P RR*
9 df-ico 12181 . . 3  |-  [,)  =  ( x  e.  RR* ,  y  e.  RR*  |->  { z  e.  RR*  |  (
x  <_  z  /\  z  <  y ) } )
109fmpt2 7237 . 2  |-  ( A. x  e.  RR*  A. y  e.  RR*  { z  e. 
RR*  |  ( x  <_  z  /\  z  < 
y ) }  e.  ~P RR*  <->  [,) : ( RR*  X. 
RR* ) --> ~P RR* )
118, 10mpbi 220 1  |-  [,) :
( RR*  X.  RR* ) --> ~P RR*
Colors of variables: wff setvar class
Syntax hints:    /\ wa 384    e. wcel 1990   A.wral 2912   {crab 2916    C_ wss 3574   ~Pcpw 4158   class class class wbr 4653    X. cxp 5112   -->wf 5884   RR*cxr 10073    < clt 10074    <_ cle 10075   [,)cico 12177
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-cnex 9992  ax-resscn 9993
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-fv 5896  df-oprab 6654  df-mpt2 6655  df-1st 7168  df-2nd 7169  df-xr 10078  df-ico 12181
This theorem is referenced by:  fvvolicof  40208  volicoff  40212  voliooicof  40213  ovolval5lem2  40867  ovolval5lem3  40868  ovnovollem1  40870  ovnovollem2  40871
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