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Theorem xrnltled 11297
Description: "Not less than" implies "less than or equal to". (Contributed by Glauco Siliprandi, 11-Dec-2019.)
Hypotheses
Ref Expression
xrnltled.1 (𝜑𝐴 ∈ ℝ*)
xrnltled.2 (𝜑𝐵 ∈ ℝ*)
xrnltled.3 (𝜑 → ¬ 𝐵 < 𝐴)
Assertion
Ref Expression
xrnltled (𝜑𝐴𝐵)

Proof of Theorem xrnltled
StepHypRef Expression
1 xrnltled.3 . 2 (𝜑 → ¬ 𝐵 < 𝐴)
2 xrnltled.1 . . 3 (𝜑𝐴 ∈ ℝ*)
3 xrnltled.2 . . 3 (𝜑𝐵 ∈ ℝ*)
42, 3xrlenltd 11294 . 2 (𝜑 → (𝐴𝐵 ↔ ¬ 𝐵 < 𝐴))
51, 4mpbird 260 1 (𝜑𝐴𝐵)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  ¬ wn 3  wi 4  wcel 2146   class class class wbr 5111  *cxr 11261   < clt 11262  cle 11263
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2148  ax-9 2156  ax-ext 2737  ax-sep 5259  ax-pr 5406
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-sb 2100  df-clab 2744  df-cleq 2757  df-clel 2840  df-ral 3082  df-rex 3092  df-rab 3419  df-v 3459  df-dif 3909  df-un 3911  df-in 3913  df-ss 3923  df-nul 4287  df-if 4490  df-sn 4592  df-pr 4594  df-op 4598  df-br 5112  df-opab 5176  df-xp 5669  df-cnv 5671  df-le 11268
This theorem is used by:  supxrub  13370  infxrlb  13381  ixxub  13413  ixxlb  13414  supicclub2  13551  radcnvle  26638  xrge0infssd  33180  infxrge0lb  33183  pimxrneun  46279  liminflbuz2  46606  icccncfext  46678
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