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Theorem rpgecl 10015
Description: A number greater or equal to a positive real is positive real. (Contributed by Mario Carneiro, 28-May-2016.)
Assertion
Ref Expression
rpgecl  |-  ( ( A  e.  RR+  /\  B  e.  RR  /\  A  <_  B )  ->  B  e.  RR+ )

Proof of Theorem rpgecl
StepHypRef Expression
1 simp2 1025 . 2  |-  ( ( A  e.  RR+  /\  B  e.  RR  /\  A  <_  B )  ->  B  e.  RR )
2 0red 8275 . . 3  |-  ( ( A  e.  RR+  /\  B  e.  RR  /\  A  <_  B )  ->  0  e.  RR )
3 rpre 9993 . . . 4  |-  ( A  e.  RR+  ->  A  e.  RR )
433ad2ant1 1045 . . 3  |-  ( ( A  e.  RR+  /\  B  e.  RR  /\  A  <_  B )  ->  A  e.  RR )
5 rpgt0 9998 . . . 4  |-  ( A  e.  RR+  ->  0  < 
A )
653ad2ant1 1045 . . 3  |-  ( ( A  e.  RR+  /\  B  e.  RR  /\  A  <_  B )  ->  0  <  A )
7 simp3 1026 . . 3  |-  ( ( A  e.  RR+  /\  B  e.  RR  /\  A  <_  B )  ->  A  <_  B )
82, 4, 1, 6, 7ltletrd 8697 . 2  |-  ( ( A  e.  RR+  /\  B  e.  RR  /\  A  <_  B )  ->  0  <  B )
9 elrp 9988 . 2  |-  ( B  e.  RR+  <->  ( B  e.  RR  /\  0  < 
B ) )
101, 8, 9sylanbrc 417 1  |-  ( ( A  e.  RR+  /\  B  e.  RR  /\  A  <_  B )  ->  B  e.  RR+ )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ w3a 1005    e. wcel 2203   class class class wbr 4109   RRcr 8126   0cc0 8127    < clt 8308    <_ cle 8309   RR+crp 9986
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 619  ax-in2 620  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 2205  ax-14 2206  ax-ext 2214  ax-sep 4228  ax-pow 4287  ax-pr 4322  ax-un 4554  ax-setind 4659  ax-cnex 8218  ax-resscn 8219  ax-1re 8221  ax-addrcl 8224  ax-rnegex 8236  ax-pre-ltwlin 8240
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2083  df-mo 2084  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ne 2413  df-nel 2508  df-ral 2525  df-rex 2526  df-rab 2529  df-v 2815  df-dif 3213  df-un 3215  df-in 3217  df-ss 3224  df-pw 3671  df-sn 3695  df-pr 3696  df-op 3698  df-uni 3915  df-br 4110  df-opab 4172  df-xp 4755  df-cnv 4757  df-pnf 8310  df-mnf 8311  df-xr 8312  df-ltxr 8313  df-le 8314  df-rp 9987
This theorem is referenced by:  divge1  10056  rpgecld  10069  logge0  15745
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