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Theorem prub 9363
Description: A positive fraction not in a positive real is an upper bound. Remark (1) of [Gleason] p. 122. (Contributed by NM, 25-Feb-1996.) (New usage is discouraged.)
Assertion
Ref Expression
prub  |-  ( ( ( A  e.  P.  /\  B  e.  A )  /\  C  e.  Q. )  ->  ( -.  C  e.  A  ->  B  <Q  C ) )

Proof of Theorem prub
StepHypRef Expression
1 eleq1 2534 . . . . . . 7  |-  ( B  =  C  ->  ( B  e.  A  <->  C  e.  A ) )
21biimpcd 224 . . . . . 6  |-  ( B  e.  A  ->  ( B  =  C  ->  C  e.  A ) )
32adantl 466 . . . . 5  |-  ( ( A  e.  P.  /\  B  e.  A )  ->  ( B  =  C  ->  C  e.  A
) )
4 prcdnq 9362 . . . . 5  |-  ( ( A  e.  P.  /\  B  e.  A )  ->  ( C  <Q  B  ->  C  e.  A )
)
53, 4jaod 380 . . . 4  |-  ( ( A  e.  P.  /\  B  e.  A )  ->  ( ( B  =  C  \/  C  <Q  B )  ->  C  e.  A ) )
65con3d 133 . . 3  |-  ( ( A  e.  P.  /\  B  e.  A )  ->  ( -.  C  e.  A  ->  -.  ( B  =  C  \/  C  <Q  B ) ) )
76adantr 465 . 2  |-  ( ( ( A  e.  P.  /\  B  e.  A )  /\  C  e.  Q. )  ->  ( -.  C  e.  A  ->  -.  ( B  =  C  \/  C  <Q  B ) ) )
8 elprnq 9360 . . 3  |-  ( ( A  e.  P.  /\  B  e.  A )  ->  B  e.  Q. )
9 ltsonq 9338 . . . 4  |-  <Q  Or  Q.
10 sotric 4821 . . . 4  |-  ( ( 
<Q  Or  Q.  /\  ( B  e.  Q.  /\  C  e.  Q. ) )  -> 
( B  <Q  C  <->  -.  ( B  =  C  \/  C  <Q  B ) ) )
119, 10mpan 670 . . 3  |-  ( ( B  e.  Q.  /\  C  e.  Q. )  ->  ( B  <Q  C  <->  -.  ( B  =  C  \/  C  <Q  B ) ) )
128, 11sylan 471 . 2  |-  ( ( ( A  e.  P.  /\  B  e.  A )  /\  C  e.  Q. )  ->  ( B  <Q  C  <->  -.  ( B  =  C  \/  C  <Q  B ) ) )
137, 12sylibrd 234 1  |-  ( ( ( A  e.  P.  /\  B  e.  A )  /\  C  e.  Q. )  ->  ( -.  C  e.  A  ->  B  <Q  C ) )
Colors of variables: wff setvar class
Syntax hints:   -. wn 3    -> wi 4    <-> wb 184    \/ wo 368    /\ wa 369    = wceq 1374    e. wcel 1762   class class class wbr 4442    Or wor 4794   Q.cnq 9221    <Q cltq 9227   P.cnp 9228
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1596  ax-4 1607  ax-5 1675  ax-6 1714  ax-7 1734  ax-8 1764  ax-9 1766  ax-10 1781  ax-11 1786  ax-12 1798  ax-13 1963  ax-ext 2440  ax-sep 4563  ax-nul 4571  ax-pow 4620  ax-pr 4681  ax-un 6569
This theorem depends on definitions:  df-bi 185  df-or 370  df-an 371  df-3or 969  df-3an 970  df-tru 1377  df-ex 1592  df-nf 1595  df-sb 1707  df-eu 2274  df-mo 2275  df-clab 2448  df-cleq 2454  df-clel 2457  df-nfc 2612  df-ne 2659  df-ral 2814  df-rex 2815  df-reu 2816  df-rmo 2817  df-rab 2818  df-v 3110  df-sbc 3327  df-csb 3431  df-dif 3474  df-un 3476  df-in 3478  df-ss 3485  df-pss 3487  df-nul 3781  df-if 3935  df-pw 4007  df-sn 4023  df-pr 4025  df-tp 4027  df-op 4029  df-uni 4241  df-iun 4322  df-br 4443  df-opab 4501  df-mpt 4502  df-tr 4536  df-eprel 4786  df-id 4790  df-po 4795  df-so 4796  df-fr 4833  df-we 4835  df-ord 4876  df-on 4877  df-lim 4878  df-suc 4879  df-xp 5000  df-rel 5001  df-cnv 5002  df-co 5003  df-dm 5004  df-rn 5005  df-res 5006  df-ima 5007  df-iota 5544  df-fun 5583  df-fn 5584  df-f 5585  df-f1 5586  df-fo 5587  df-f1o 5588  df-fv 5589  df-ov 6280  df-oprab 6281  df-mpt2 6282  df-om 6674  df-1st 6776  df-2nd 6777  df-recs 7034  df-rdg 7068  df-oadd 7126  df-omul 7127  df-er 7303  df-ni 9241  df-mi 9243  df-lti 9244  df-ltpq 9279  df-enq 9280  df-nq 9281  df-ltnq 9287  df-np 9350
This theorem is referenced by:  genpnnp  9374  psslinpr  9400  ltexprlem6  9410  ltexprlem7  9411  prlem936  9416  reclem4pr  9419
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