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Theorem pnfged 39704
Description: Plus infinity is an upper bound for extended reals. (Contributed by Glauco Siliprandi, 5-Feb-2022.)
Hypothesis
Ref Expression
pnfged.1  |-  ( ph  ->  A  e.  RR* )
Assertion
Ref Expression
pnfged  |-  ( ph  ->  A  <_ +oo )

Proof of Theorem pnfged
StepHypRef Expression
1 pnfged.1 . 2  |-  ( ph  ->  A  e.  RR* )
2 pnfge 11964 . 2  |-  ( A  e.  RR*  ->  A  <_ +oo )
31, 2syl 17 1  |-  ( ph  ->  A  <_ +oo )
Colors of variables: wff setvar class
Syntax hints:    -> wi 4    e. wcel 1990   class class class wbr 4653   +oocpnf 10071   RR*cxr 10073    <_ cle 10075
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-nel 2898  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  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-br 4654  df-opab 4713  df-xp 5120  df-cnv 5122  df-pnf 10076  df-mnf 10077  df-xr 10078  df-ltxr 10079  df-le 10080
This theorem is referenced by:  xlimpnfvlem2  40063
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