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Theorem pnfged 13265
Description: Plus infinity is an upper bound for extended reals. (Contributed by Glauco Siliprandi, 5-Feb-2022.)
Hypothesis
Ref Expression
pnfged.1 (𝜑 → 𝐴 ∈ ℝ*)
Assertion
Ref Expression
pnfged (𝜑 → 𝐴 ≤ +∞)

Proof of Theorem pnfged
StepHypRef Expression
1 pnfged.1 . 2 (𝜑 → 𝐴 ∈ ℝ*)
2 pnfge 13264 . 2 (𝐴 ∈ ℝ* → 𝐴 ≤ +∞)
31, 2syl 18 1 (𝜑 → 𝐴 ≤ +∞)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ∈ wcel 2144   class class class wbr 5102  +∞cpnf 11345  ℝ*cxr 11347   ≤ cle 11349
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1942  ax-6 1999  ax-7 2040  ax-8 2146  ax-9 2154  ax-ext 2732  ax-sep 5248  ax-pow 5326  ax-pr 5390  ax-un 7753  ax-cnex 11261  ax-resscn 11262
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-sb 2099  df-clab 2739  df-cleq 2752  df-clel 2835  df-ne 2956  df-nel 3062  df-ral 3077  df-rex 3087  df-rab 3413  df-v 3452  df-ss 3897  df-dif 4046  df-in 4090  df-un 4150  df-nul 4278  df-if 4482  df-pw 4558  df-sn 4585  df-pr 4587  df-op 4835  df-uni 4867  df-br 5103  df-opab 5167  df-xp 5656  df-cnv 5658  df-pnf 11350  df-mnf 11351  df-xr 11352  df-ltxr 11353  df-le 11354
This theorem is used by:  xrlimcnp  27303  lbslelsp  34278  omssubadd  34980  xlimpnfvlem2  46954  xlimliminflimsup  46979  fourierdlem48  47271  fourierdlem113  47336  pimgtpnf2f  47822  pimiooltgt  47827
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