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Theorem ltlecasei 11221
Description: Ordering elimination by cases. (Contributed by NM, 1-Jul-2007.) (Proof shortened by Mario Carneiro, 27-May-2016.)
Hypotheses
Ref Expression
ltlecasei.1 ((𝜑𝐴 < 𝐵) → 𝜓)
ltlecasei.2 ((𝜑𝐵𝐴) → 𝜓)
ltlecasei.3 (𝜑𝐴 ∈ ℝ)
ltlecasei.4 (𝜑𝐵 ∈ ℝ)
Assertion
Ref Expression
ltlecasei (𝜑𝜓)

Proof of Theorem ltlecasei
StepHypRef Expression
1 ltlecasei.2 . 2 ((𝜑𝐵𝐴) → 𝜓)
2 ltlecasei.1 . 2 ((𝜑𝐴 < 𝐵) → 𝜓)
3 ltlecasei.4 . . 3 (𝜑𝐵 ∈ ℝ)
4 ltlecasei.3 . . 3 (𝜑𝐴 ∈ ℝ)
5 lelttric 11220 . . 3 ((𝐵 ∈ ℝ ∧ 𝐴 ∈ ℝ) → (𝐵𝐴𝐴 < 𝐵))
63, 4, 5syl2anc 584 . 2 (𝜑 → (𝐵𝐴𝐴 < 𝐵))
71, 2, 6mpjaodan 960 1 (𝜑𝜓)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395  wo 847  wcel 2111   class class class wbr 5091  cr 11005   < clt 11146  cle 11147
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2113  ax-9 2121  ax-ext 2703  ax-sep 5234  ax-nul 5244  ax-pr 5370
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-sb 2068  df-clab 2710  df-cleq 2723  df-clel 2806  df-ral 3048  df-rex 3057  df-rab 3396  df-v 3438  df-dif 3905  df-un 3907  df-ss 3919  df-nul 4284  df-if 4476  df-sn 4577  df-pr 4579  df-op 4583  df-br 5092  df-opab 5154  df-xp 5622  df-cnv 5624  df-xr 11150  df-le 11152
This theorem is referenced by:  iccsplit  13385  expnbnd  14139  hashf1  14364  absmax  15237  sinltx  16098  iccntr  24738  pmltpclem2  25378  cniccbdd  25390  iccvolcl  25496  ioovolcl  25499  dyaddisjlem  25524  mbfposr  25581  itg1ge0a  25640  itg2monolem1  25679  itgioo  25745  c1lip1  25930  plyeq0lem  26143  aalioulem5  26272  pserulm  26359  tanord  26475  birthdaylem3  26891  fsumharmonic  26950  chpo1ubb  27420  cos9thpiminplylem1  33793  mblfinlem2  37704  ioodvbdlimc1  45977  ioodvbdlimc2  45979  ibliooicc  46015  fourierdlem107  46257
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