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Theorem eqlei 8148
Description: Equality implies 'less than or equal to'. (Contributed by NM, 23-May-1999.) (Revised by Alexander van der Vekens, 20-Mar-2018.)
Hypothesis
Ref Expression
lt.1 𝐴 ∈ ℝ
Assertion
Ref Expression
eqlei (𝐴 = 𝐵𝐴𝐵)

Proof of Theorem eqlei
StepHypRef Expression
1 lt.1 . 2 𝐴 ∈ ℝ
2 eqle 8146 . 2 ((𝐴 ∈ ℝ ∧ 𝐴 = 𝐵) → 𝐴𝐵)
31, 2mpan 424 1 (𝐴 = 𝐵𝐴𝐵)
Colors of variables: wff set class
Syntax hints:  wi 4   = wceq 1372  wcel 2175   class class class wbr 4043  cr 7906  cle 8090
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 615  ax-in2 616  ax-io 710  ax-5 1469  ax-7 1470  ax-gen 1471  ax-ie1 1515  ax-ie2 1516  ax-8 1526  ax-10 1527  ax-11 1528  ax-i12 1529  ax-bndl 1531  ax-4 1532  ax-17 1548  ax-i9 1552  ax-ial 1556  ax-i5r 1557  ax-13 2177  ax-14 2178  ax-ext 2186  ax-sep 4161  ax-pow 4217  ax-pr 4252  ax-un 4478  ax-setind 4583  ax-cnex 7998  ax-resscn 7999  ax-pre-ltirr 8019
This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1375  df-fal 1378  df-nf 1483  df-sb 1785  df-eu 2056  df-mo 2057  df-clab 2191  df-cleq 2197  df-clel 2200  df-nfc 2336  df-ne 2376  df-nel 2471  df-ral 2488  df-rex 2489  df-rab 2492  df-v 2773  df-dif 3167  df-un 3169  df-in 3171  df-ss 3178  df-pw 3617  df-sn 3638  df-pr 3639  df-op 3641  df-uni 3850  df-br 4044  df-opab 4105  df-xp 4679  df-cnv 4681  df-pnf 8091  df-mnf 8092  df-xr 8093  df-ltxr 8094  df-le 8095
This theorem is referenced by:  le2tri3i  8163  fldiv4lem1div2  10431  resqrexlemnm  11248  fprodle  11870
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