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Theorem ltlecasei 11282
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 11281 . . 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 2109   class class class wbr 5107  cr 11067   < clt 11208  cle 11209
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-ext 2701  ax-sep 5251  ax-nul 5261  ax-pr 5387
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-sb 2066  df-clab 2708  df-cleq 2721  df-clel 2803  df-ral 3045  df-rex 3054  df-rab 3406  df-v 3449  df-dif 3917  df-un 3919  df-ss 3931  df-nul 4297  df-if 4489  df-sn 4590  df-pr 4592  df-op 4596  df-br 5108  df-opab 5170  df-xp 5644  df-cnv 5646  df-xr 11212  df-le 11214
This theorem is referenced by:  iccsplit  13446  expnbnd  14197  hashf1  14422  absmax  15296  sinltx  16157  iccntr  24710  pmltpclem2  25350  cniccbdd  25362  iccvolcl  25468  ioovolcl  25471  dyaddisjlem  25496  mbfposr  25553  itg1ge0a  25612  itg2monolem1  25651  itgioo  25717  c1lip1  25902  plyeq0lem  26115  aalioulem5  26244  pserulm  26331  tanord  26447  birthdaylem3  26863  fsumharmonic  26922  chpo1ubb  27392  cos9thpiminplylem1  33772  mblfinlem2  37652  ioodvbdlimc1  45931  ioodvbdlimc2  45933  ibliooicc  45969  fourierdlem107  46211
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