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Theorem ltsopr 8873
Description: Positive real 'less than' is a strict ordering. Part of Proposition 9-3.3 of [Gleason] p. 122. (Contributed by NM, 25-Feb-1996.) (New usage is discouraged.)
Assertion
Ref Expression
ltsopr  |-  <P  Or  P.

Proof of Theorem ltsopr
Dummy variables  x  y  z are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 pssirr 3415 . . . 4  |-  -.  x  C.  x
2 ltprord 8871 . . . 4  |-  ( ( x  e.  P.  /\  x  e.  P. )  ->  ( x  <P  x  <->  x 
C.  x ) )
31, 2mtbiri 295 . . 3  |-  ( ( x  e.  P.  /\  x  e.  P. )  ->  -.  x  <P  x
)
43anidms 627 . 2  |-  ( x  e.  P.  ->  -.  x  <P  x )
5 psstr 3419 . . 3  |-  ( ( x  C.  y  /\  y  C.  z )  ->  x  C.  z )
6 ltprord 8871 . . . . . 6  |-  ( ( x  e.  P.  /\  y  e.  P. )  ->  ( x  <P  y  <->  x 
C.  y ) )
763adant3 977 . . . . 5  |-  ( ( x  e.  P.  /\  y  e.  P.  /\  z  e.  P. )  ->  (
x  <P  y  <->  x  C.  y ) )
8 ltprord 8871 . . . . . 6  |-  ( ( y  e.  P.  /\  z  e.  P. )  ->  ( y  <P  z  <->  y 
C.  z ) )
983adant1 975 . . . . 5  |-  ( ( x  e.  P.  /\  y  e.  P.  /\  z  e.  P. )  ->  (
y  <P  z  <->  y  C.  z ) )
107, 9anbi12d 692 . . . 4  |-  ( ( x  e.  P.  /\  y  e.  P.  /\  z  e.  P. )  ->  (
( x  <P  y  /\  y  <P  z )  <-> 
( x  C.  y  /\  y  C.  z ) ) )
11 ltprord 8871 . . . . 5  |-  ( ( x  e.  P.  /\  z  e.  P. )  ->  ( x  <P  z  <->  x 
C.  z ) )
12113adant2 976 . . . 4  |-  ( ( x  e.  P.  /\  y  e.  P.  /\  z  e.  P. )  ->  (
x  <P  z  <->  x  C.  z ) )
1310, 12imbi12d 312 . . 3  |-  ( ( x  e.  P.  /\  y  e.  P.  /\  z  e.  P. )  ->  (
( ( x  <P  y  /\  y  <P  z
)  ->  x  <P  z )  <->  ( ( x 
C.  y  /\  y  C.  z )  ->  x  C.  z ) ) )
145, 13mpbiri 225 . 2  |-  ( ( x  e.  P.  /\  y  e.  P.  /\  z  e.  P. )  ->  (
( x  <P  y  /\  y  <P  z )  ->  x  <P  z
) )
15 psslinpr 8872 . . 3  |-  ( ( x  e.  P.  /\  y  e.  P. )  ->  ( x  C.  y  \/  x  =  y  \/  y  C.  x ) )
16 biidd 229 . . . 4  |-  ( ( x  e.  P.  /\  y  e.  P. )  ->  ( x  =  y  <-> 
x  =  y ) )
17 ltprord 8871 . . . . 5  |-  ( ( y  e.  P.  /\  x  e.  P. )  ->  ( y  <P  x  <->  y 
C.  x ) )
1817ancoms 440 . . . 4  |-  ( ( x  e.  P.  /\  y  e.  P. )  ->  ( y  <P  x  <->  y 
C.  x ) )
196, 16, 183orbi123d 1253 . . 3  |-  ( ( x  e.  P.  /\  y  e.  P. )  ->  ( ( x  <P  y  \/  x  =  y  \/  y  <P  x
)  <->  ( x  C.  y  \/  x  =  y  \/  y  C.  x ) ) )
2015, 19mpbird 224 . 2  |-  ( ( x  e.  P.  /\  y  e.  P. )  ->  ( x  <P  y  \/  x  =  y  \/  y  <P  x ) )
214, 14, 20issoi 4502 1  |-  <P  Or  P.
Colors of variables: wff set class
Syntax hints:   -. wn 3    -> wi 4    <-> wb 177    /\ wa 359    \/ w3o 935    /\ w3a 936    e. wcel 1721    C. wpss 3289   class class class wbr 4180    Or wor 4470   P.cnp 8698    <P cltp 8702
This theorem is referenced by:  ltapr  8886  addcanpr  8887  suplem2pr  8894  ltsosr  8933
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1552  ax-5 1563  ax-17 1623  ax-9 1662  ax-8 1683  ax-13 1723  ax-14 1725  ax-6 1740  ax-7 1745  ax-11 1757  ax-12 1946  ax-ext 2393  ax-sep 4298  ax-nul 4306  ax-pow 4345  ax-pr 4371  ax-un 4668
This theorem depends on definitions:  df-bi 178  df-or 360  df-an 361  df-3or 937  df-3an 938  df-tru 1325  df-ex 1548  df-nf 1551  df-sb 1656  df-eu 2266  df-mo 2267  df-clab 2399  df-cleq 2405  df-clel 2408  df-nfc 2537  df-ne 2577  df-ral 2679  df-rex 2680  df-reu 2681  df-rmo 2682  df-rab 2683  df-v 2926  df-sbc 3130  df-csb 3220  df-dif 3291  df-un 3293  df-in 3295  df-ss 3302  df-pss 3304  df-nul 3597  df-if 3708  df-pw 3769  df-sn 3788  df-pr 3789  df-tp 3790  df-op 3791  df-uni 3984  df-iun 4063  df-br 4181  df-opab 4235  df-mpt 4236  df-tr 4271  df-eprel 4462  df-id 4466  df-po 4471  df-so 4472  df-fr 4509  df-we 4511  df-ord 4552  df-on 4553  df-lim 4554  df-suc 4555  df-om 4813  df-xp 4851  df-rel 4852  df-cnv 4853  df-co 4854  df-dm 4855  df-rn 4856  df-res 4857  df-ima 4858  df-iota 5385  df-fun 5423  df-fn 5424  df-f 5425  df-f1 5426  df-fo 5427  df-f1o 5428  df-fv 5429  df-ov 6051  df-oprab 6052  df-mpt2 6053  df-1st 6316  df-2nd 6317  df-recs 6600  df-rdg 6635  df-oadd 6695  df-omul 6696  df-er 6872  df-ni 8713  df-mi 8715  df-lti 8716  df-ltpq 8751  df-enq 8752  df-nq 8753  df-ltnq 8759  df-np 8822  df-ltp 8826
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