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Theorem ltrelsr 3974
Description: Signed real 'less than' is a relation on signed reals.
Assertion
Ref Expression
ltrelsr <R ⊆ (R × R)

Proof of Theorem ltrelsr
StepHypRef Expression
1 df-ltr 3964 . 2 <R = {⟨x, y⟩∣((xRyR) ∧ ∃zwvu((x = [⟨z, w⟩] ~Ry = [⟨v, u⟩] ~R ) ∧ (z +P u)<P (w +P v)))}
2 opabssxp 2468 . 2 {⟨x, y⟩∣((xRyR) ∧ ∃zwvu((x = [⟨z, w⟩] ~Ry = [⟨v, u⟩] ~R ) ∧ (z +P u)<P (w +P v)))} ⊆ (R × R)
31, 2eqsstr 1530 1 <R ⊆ (R × R)
Colors of variables: wff set class
Syntax hints:   ∧ wa 196  ∃wex 678   = wceq 1091   ∈ wcel 1092   ⊆ wss 1487  ⟨cop 1810   class class class wbr 2054  {copab 2055   × cxp 2408  (class class class)co 3001  [cec 3198   +P cpp 3781  <P cltp 3783   ~R cer 3786  Rcnr 3787   <R cltr 3793
This theorem is referenced by:  ltsrpr 3980  ltasr 4003  recexsrlem 4006  addgt0sr 4007  mulgt0sr 4008  map2psrpr 4014  suppsr2 4017  suppsr3 4018  ltresr 4052  ltsor 4055
This theorem was proved from axioms:  ax-1 3  ax-2 4  ax-3 5  ax-mp 6  ax-4 673  ax-5 674  ax-6 675  ax-7 676  ax-gen 677  ax-8 798  ax-9 799  ax-10 800  ax-11 801  ax-12 802  ax-13 804  ax-14 805  ax-16 922  ax-17 925  ax-ext 1074  ax-rep 1075  ax-pow 1077
This theorem depends on definitions:  df-bi 128  df-or 197  df-an 198  df-ex 679  df-sb 853  df-clab 1093  df-cleq 1097  df-clel 1099  df-v 1349  df-dif 1489  df-un 1490  df-in 1491  df-ss 1492  df-nul 1708  df-pw 1799  df-sn 1811  df-pr 1812  df-op 1815  df-opab 2098  df-xp 2424  df-ltr 3964
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