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Theorem icossre 10150
Description: A closed-below interval with real lower bound is a set of reals. (Contributed by Mario Carneiro, 14-Jun-2014.)
Assertion
Ref Expression
icossre  |-  ( ( A  e.  RR  /\  B  e.  RR* )  -> 
( A [,) B
)  C_  RR )

Proof of Theorem icossre
Dummy variable  x is distinct from all other variables.
StepHypRef Expression
1 elico2 10133 . . . . 5  |-  ( ( A  e.  RR  /\  B  e.  RR* )  -> 
( x  e.  ( A [,) B )  <-> 
( x  e.  RR  /\  A  <_  x  /\  x  <  B ) ) )
21biimp3a 1379 . . . 4  |-  ( ( A  e.  RR  /\  B  e.  RR*  /\  x  e.  ( A [,) B
) )  ->  (
x  e.  RR  /\  A  <_  x  /\  x  <  B ) )
32simp1d 1033 . . 3  |-  ( ( A  e.  RR  /\  B  e.  RR*  /\  x  e.  ( A [,) B
) )  ->  x  e.  RR )
433expia 1229 . 2  |-  ( ( A  e.  RR  /\  B  e.  RR* )  -> 
( x  e.  ( A [,) B )  ->  x  e.  RR ) )
54ssrdv 3230 1  |-  ( ( A  e.  RR  /\  B  e.  RR* )  -> 
( A [,) B
)  C_  RR )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    /\ w3a 1002    e. wcel 2200    C_ wss 3197   class class class wbr 4083  (class class class)co 6001   RRcr 7998   RR*cxr 8180    < clt 8181    <_ cle 8182   [,)cico 10086
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-in1 617  ax-in2 618  ax-io 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-13 2202  ax-14 2203  ax-ext 2211  ax-sep 4202  ax-pow 4258  ax-pr 4293  ax-un 4524  ax-setind 4629  ax-cnex 8090  ax-resscn 8091  ax-pre-ltirr 8111  ax-pre-ltwlin 8112  ax-pre-lttrn 8113
This theorem depends on definitions:  df-bi 117  df-3or 1003  df-3an 1004  df-tru 1398  df-fal 1401  df-nf 1507  df-sb 1809  df-eu 2080  df-mo 2081  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-ne 2401  df-nel 2496  df-ral 2513  df-rex 2514  df-rab 2517  df-v 2801  df-sbc 3029  df-dif 3199  df-un 3201  df-in 3203  df-ss 3210  df-pw 3651  df-sn 3672  df-pr 3673  df-op 3675  df-uni 3889  df-br 4084  df-opab 4146  df-id 4384  df-po 4387  df-iso 4388  df-xp 4725  df-rel 4726  df-cnv 4727  df-co 4728  df-dm 4729  df-iota 5278  df-fun 5320  df-fv 5326  df-ov 6004  df-oprab 6005  df-mpo 6006  df-pnf 8183  df-mnf 8184  df-xr 8185  df-ltxr 8186  df-le 8187  df-ico 10090
This theorem is referenced by:  icoshftf1o  10187  rexico  11732  fprodge1  12150
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