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Theorem ltsopr 8672
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 3289 . . . 4  |-  -.  x  C.  x
2 ltprord 8670 . . . 4  |-  ( ( x  e.  P.  /\  x  e.  P. )  ->  ( x  <P  x  <->  x 
C.  x ) )
31, 2mtbiri 294 . . 3  |-  ( ( x  e.  P.  /\  x  e.  P. )  ->  -.  x  <P  x
)
43anidms 626 . 2  |-  ( x  e.  P.  ->  -.  x  <P  x )
5 psstr 3293 . . 3  |-  ( ( x  C.  y  /\  y  C.  z )  ->  x  C.  z )
6 ltprord 8670 . . . . . 6  |-  ( ( x  e.  P.  /\  y  e.  P. )  ->  ( x  <P  y  <->  x 
C.  y ) )
763adant3 975 . . . . 5  |-  ( ( x  e.  P.  /\  y  e.  P.  /\  z  e.  P. )  ->  (
x  <P  y  <->  x  C.  y ) )
8 ltprord 8670 . . . . . 6  |-  ( ( y  e.  P.  /\  z  e.  P. )  ->  ( y  <P  z  <->  y 
C.  z ) )
983adant1 973 . . . . 5  |-  ( ( x  e.  P.  /\  y  e.  P.  /\  z  e.  P. )  ->  (
y  <P  z  <->  y  C.  z ) )
107, 9anbi12d 691 . . . 4  |-  ( ( x  e.  P.  /\  y  e.  P.  /\  z  e.  P. )  ->  (
( x  <P  y  /\  y  <P  z )  <-> 
( x  C.  y  /\  y  C.  z ) ) )
11 ltprord 8670 . . . . 5  |-  ( ( x  e.  P.  /\  z  e.  P. )  ->  ( x  <P  z  <->  x 
C.  z ) )
12113adant2 974 . . . 4  |-  ( ( x  e.  P.  /\  y  e.  P.  /\  z  e.  P. )  ->  (
x  <P  z  <->  x  C.  z ) )
1310, 12imbi12d 311 . . 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 224 . 2  |-  ( ( x  e.  P.  /\  y  e.  P.  /\  z  e.  P. )  ->  (
( x  <P  y  /\  y  <P  z )  ->  x  <P  z
) )
15 psslinpr 8671 . . 3  |-  ( ( x  e.  P.  /\  y  e.  P. )  ->  ( x  C.  y  \/  x  =  y  \/  y  C.  x ) )
16 biidd 228 . . . 4  |-  ( ( x  e.  P.  /\  y  e.  P. )  ->  ( x  =  y  <-> 
x  =  y ) )
17 ltprord 8670 . . . . 5  |-  ( ( y  e.  P.  /\  x  e.  P. )  ->  ( y  <P  x  <->  y 
C.  x ) )
1817ancoms 439 . . . 4  |-  ( ( x  e.  P.  /\  y  e.  P. )  ->  ( y  <P  x  <->  y 
C.  x ) )
196, 16, 183orbi123d 1251 . . 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 223 . 2  |-  ( ( x  e.  P.  /\  y  e.  P. )  ->  ( x  <P  y  \/  x  =  y  \/  y  <P  x ) )
214, 14, 20issoi 4361 1  |-  <P  Or  P.
Colors of variables: wff set class
Syntax hints:   -. wn 3    -> wi 4    <-> wb 176    /\ wa 358    \/ w3o 933    /\ w3a 934    = wceq 1632    e. wcel 1696    C. wpss 3166   class class class wbr 4039    Or wor 4329   P.cnp 8497    <P cltp 8501
This theorem is referenced by:  ltapr  8685  addcanpr  8686  suplem2pr  8693  ltsosr  8732
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1536  ax-5 1547  ax-17 1606  ax-9 1644  ax-8 1661  ax-13 1698  ax-14 1700  ax-6 1715  ax-7 1720  ax-11 1727  ax-12 1878  ax-ext 2277  ax-sep 4157  ax-nul 4165  ax-pow 4204  ax-pr 4230  ax-un 4528
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-3or 935  df-3an 936  df-tru 1310  df-ex 1532  df-nf 1535  df-sb 1639  df-eu 2160  df-mo 2161  df-clab 2283  df-cleq 2289  df-clel 2292  df-nfc 2421  df-ne 2461  df-ral 2561  df-rex 2562  df-reu 2563  df-rmo 2564  df-rab 2565  df-v 2803  df-sbc 3005  df-csb 3095  df-dif 3168  df-un 3170  df-in 3172  df-ss 3179  df-pss 3181  df-nul 3469  df-if 3579  df-pw 3640  df-sn 3659  df-pr 3660  df-tp 3661  df-op 3662  df-uni 3844  df-iun 3923  df-br 4040  df-opab 4094  df-mpt 4095  df-tr 4130  df-eprel 4321  df-id 4325  df-po 4330  df-so 4331  df-fr 4368  df-we 4370  df-ord 4411  df-on 4412  df-lim 4413  df-suc 4414  df-om 4673  df-xp 4711  df-rel 4712  df-cnv 4713  df-co 4714  df-dm 4715  df-rn 4716  df-res 4717  df-ima 4718  df-iota 5235  df-fun 5273  df-fn 5274  df-f 5275  df-f1 5276  df-fo 5277  df-f1o 5278  df-fv 5279  df-ov 5877  df-oprab 5878  df-mpt2 5879  df-1st 6138  df-2nd 6139  df-recs 6404  df-rdg 6439  df-oadd 6499  df-omul 6500  df-er 6676  df-ni 8512  df-mi 8514  df-lti 8515  df-ltpq 8550  df-enq 8551  df-nq 8552  df-ltnq 8558  df-np 8621  df-ltp 8625
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