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Theorem ltsosr 7831
Description: Signed real 'less than' is a strict ordering. (Contributed by NM, 19-Feb-1996.)
Assertion
Ref Expression
ltsosr  |-  <R  Or  R.

Proof of Theorem ltsosr
Dummy variables  a  b  c  d  e  f  r  s  t  x  y  z are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 ltposr 7830 . 2  |-  <R  Po  R.
2 df-nr 7794 . . . 4  |-  R.  =  ( ( P.  X.  P. ) /.  ~R  )
3 breq1 4036 . . . . 5  |-  ( [
<. a ,  b >. ]  ~R  =  x  -> 
( [ <. a ,  b >. ]  ~R  <R  [ <. c ,  d
>. ]  ~R  <->  x  <R  [
<. c ,  d >. ]  ~R  ) )
4 breq1 4036 . . . . . 6  |-  ( [
<. a ,  b >. ]  ~R  =  x  -> 
( [ <. a ,  b >. ]  ~R  <R  [ <. e ,  f
>. ]  ~R  <->  x  <R  [
<. e ,  f >. ]  ~R  ) )
54orbi1d 792 . . . . 5  |-  ( [
<. a ,  b >. ]  ~R  =  x  -> 
( ( [ <. a ,  b >. ]  ~R  <R  [ <. e ,  f
>. ]  ~R  \/  [ <. e ,  f >. ]  ~R  <R  [ <. c ,  d >. ]  ~R  ) 
<->  ( x  <R  [ <. e ,  f >. ]  ~R  \/  [ <. e ,  f
>. ]  ~R  <R  [ <. c ,  d >. ]  ~R  ) ) )
63, 5imbi12d 234 . . . 4  |-  ( [
<. a ,  b >. ]  ~R  =  x  -> 
( ( [ <. a ,  b >. ]  ~R  <R  [ <. c ,  d
>. ]  ~R  ->  ( [ <. a ,  b
>. ]  ~R  <R  [ <. e ,  f >. ]  ~R  \/  [ <. e ,  f
>. ]  ~R  <R  [ <. c ,  d >. ]  ~R  ) )  <->  ( x  <R  [ <. c ,  d
>. ]  ~R  ->  (
x  <R  [ <. e ,  f >. ]  ~R  \/  [ <. e ,  f
>. ]  ~R  <R  [ <. c ,  d >. ]  ~R  ) ) ) )
7 breq2 4037 . . . . 5  |-  ( [
<. c ,  d >. ]  ~R  =  y  -> 
( x  <R  [ <. c ,  d >. ]  ~R  <->  x 
<R  y ) )
8 breq2 4037 . . . . . 6  |-  ( [
<. c ,  d >. ]  ~R  =  y  -> 
( [ <. e ,  f >. ]  ~R  <R  [ <. c ,  d
>. ]  ~R  <->  [ <. e ,  f >. ]  ~R  <R  y ) )
98orbi2d 791 . . . . 5  |-  ( [
<. c ,  d >. ]  ~R  =  y  -> 
( ( x  <R  [
<. e ,  f >. ]  ~R  \/  [ <. e ,  f >. ]  ~R  <R  [ <. c ,  d
>. ]  ~R  )  <->  ( x  <R  [ <. e ,  f
>. ]  ~R  \/  [ <. e ,  f >. ]  ~R  <R  y )
) )
107, 9imbi12d 234 . . . 4  |-  ( [
<. c ,  d >. ]  ~R  =  y  -> 
( ( x  <R  [
<. c ,  d >. ]  ~R  ->  ( x  <R  [ <. e ,  f
>. ]  ~R  \/  [ <. e ,  f >. ]  ~R  <R  [ <. c ,  d >. ]  ~R  ) )  <->  ( x  <R  y  ->  ( x  <R  [ <. e ,  f
>. ]  ~R  \/  [ <. e ,  f >. ]  ~R  <R  y )
) ) )
11 breq2 4037 . . . . . 6  |-  ( [
<. e ,  f >. ]  ~R  =  z  -> 
( x  <R  [ <. e ,  f >. ]  ~R  <->  x 
<R  z ) )
12 breq1 4036 . . . . . 6  |-  ( [
<. e ,  f >. ]  ~R  =  z  -> 
( [ <. e ,  f >. ]  ~R  <R  y  <->  z  <R  y
) )
1311, 12orbi12d 794 . . . . 5  |-  ( [
<. e ,  f >. ]  ~R  =  z  -> 
( ( x  <R  [
<. e ,  f >. ]  ~R  \/  [ <. e ,  f >. ]  ~R  <R  y )  <->  ( x  <R  z  \/  z  <R 
y ) ) )
1413imbi2d 230 . . . 4  |-  ( [
<. e ,  f >. ]  ~R  =  z  -> 
( ( x  <R  y  ->  ( x  <R  [
<. e ,  f >. ]  ~R  \/  [ <. e ,  f >. ]  ~R  <R  y ) )  <->  ( x  <R  y  ->  ( x  <R  z  \/  z  <R 
y ) ) ) )
15 simp1l 1023 . . . . . . . . 9  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  a  e.  P. )
16 simp3r 1028 . . . . . . . . 9  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  f  e.  P. )
17 addclpr 7604 . . . . . . . . 9  |-  ( ( a  e.  P.  /\  f  e.  P. )  ->  ( a  +P.  f
)  e.  P. )
1815, 16, 17syl2anc 411 . . . . . . . 8  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( a  +P.  f )  e.  P. )
19 simp2r 1026 . . . . . . . 8  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  d  e.  P. )
20 addclpr 7604 . . . . . . . 8  |-  ( ( ( a  +P.  f
)  e.  P.  /\  d  e.  P. )  ->  ( ( a  +P.  f )  +P.  d
)  e.  P. )
2118, 19, 20syl2anc 411 . . . . . . 7  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( (
a  +P.  f )  +P.  d )  e.  P. )
22 simp2l 1025 . . . . . . . . 9  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  c  e.  P. )
23 addclpr 7604 . . . . . . . . 9  |-  ( ( f  e.  P.  /\  c  e.  P. )  ->  ( f  +P.  c
)  e.  P. )
2416, 22, 23syl2anc 411 . . . . . . . 8  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( f  +P.  c )  e.  P. )
25 simp1r 1024 . . . . . . . 8  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  b  e.  P. )
26 addclpr 7604 . . . . . . . 8  |-  ( ( ( f  +P.  c
)  e.  P.  /\  b  e.  P. )  ->  ( ( f  +P.  c )  +P.  b
)  e.  P. )
2724, 25, 26syl2anc 411 . . . . . . 7  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( (
f  +P.  c )  +P.  b )  e.  P. )
28 simp3l 1027 . . . . . . . . 9  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  e  e.  P. )
29 addclpr 7604 . . . . . . . . 9  |-  ( ( b  e.  P.  /\  e  e.  P. )  ->  ( b  +P.  e
)  e.  P. )
3025, 28, 29syl2anc 411 . . . . . . . 8  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( b  +P.  e )  e.  P. )
31 addclpr 7604 . . . . . . . 8  |-  ( ( ( b  +P.  e
)  e.  P.  /\  d  e.  P. )  ->  ( ( b  +P.  e )  +P.  d
)  e.  P. )
3230, 19, 31syl2anc 411 . . . . . . 7  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( (
b  +P.  e )  +P.  d )  e.  P. )
33 ltsopr 7663 . . . . . . . 8  |-  <P  Or  P.
34 sowlin 4355 . . . . . . . 8  |-  ( ( 
<P  Or  P.  /\  (
( ( a  +P.  f )  +P.  d
)  e.  P.  /\  ( ( f  +P.  c )  +P.  b
)  e.  P.  /\  ( ( b  +P.  e )  +P.  d
)  e.  P. )
)  ->  ( (
( a  +P.  f
)  +P.  d )  <P  ( ( f  +P.  c )  +P.  b
)  ->  ( (
( a  +P.  f
)  +P.  d )  <P  ( ( b  +P.  e )  +P.  d
)  \/  ( ( b  +P.  e )  +P.  d )  <P 
( ( f  +P.  c )  +P.  b
) ) ) )
3533, 34mpan 424 . . . . . . 7  |-  ( ( ( ( a  +P.  f )  +P.  d
)  e.  P.  /\  ( ( f  +P.  c )  +P.  b
)  e.  P.  /\  ( ( b  +P.  e )  +P.  d
)  e.  P. )  ->  ( ( ( a  +P.  f )  +P.  d )  <P  (
( f  +P.  c
)  +P.  b )  ->  ( ( ( a  +P.  f )  +P.  d )  <P  (
( b  +P.  e
)  +P.  d )  \/  ( ( b  +P.  e )  +P.  d
)  <P  ( ( f  +P.  c )  +P.  b ) ) ) )
3621, 27, 32, 35syl3anc 1249 . . . . . 6  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( (
( a  +P.  f
)  +P.  d )  <P  ( ( f  +P.  c )  +P.  b
)  ->  ( (
( a  +P.  f
)  +P.  d )  <P  ( ( b  +P.  e )  +P.  d
)  \/  ( ( b  +P.  e )  +P.  d )  <P 
( ( f  +P.  c )  +P.  b
) ) ) )
37 addclpr 7604 . . . . . . . . 9  |-  ( ( a  e.  P.  /\  d  e.  P. )  ->  ( a  +P.  d
)  e.  P. )
3815, 19, 37syl2anc 411 . . . . . . . 8  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( a  +P.  d )  e.  P. )
39 addclpr 7604 . . . . . . . . 9  |-  ( ( b  e.  P.  /\  c  e.  P. )  ->  ( b  +P.  c
)  e.  P. )
4025, 22, 39syl2anc 411 . . . . . . . 8  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( b  +P.  c )  e.  P. )
41 ltaprg 7686 . . . . . . . 8  |-  ( ( ( a  +P.  d
)  e.  P.  /\  ( b  +P.  c
)  e.  P.  /\  f  e.  P. )  ->  ( ( a  +P.  d )  <P  (
b  +P.  c )  <->  ( f  +P.  ( a  +P.  d ) ) 
<P  ( f  +P.  (
b  +P.  c )
) ) )
4238, 40, 16, 41syl3anc 1249 . . . . . . 7  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( (
a  +P.  d )  <P  ( b  +P.  c
)  <->  ( f  +P.  ( a  +P.  d
) )  <P  (
f  +P.  ( b  +P.  c ) ) ) )
43 addcomprg 7645 . . . . . . . . . . 11  |-  ( ( r  e.  P.  /\  s  e.  P. )  ->  ( r  +P.  s
)  =  ( s  +P.  r ) )
4443adantl 277 . . . . . . . . . 10  |-  ( ( ( ( a  e. 
P.  /\  b  e.  P. )  /\  (
c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  /\  ( r  e.  P.  /\  s  e. 
P. ) )  -> 
( r  +P.  s
)  =  ( s  +P.  r ) )
45 addassprg 7646 . . . . . . . . . . 11  |-  ( ( r  e.  P.  /\  s  e.  P.  /\  t  e.  P. )  ->  (
( r  +P.  s
)  +P.  t )  =  ( r  +P.  ( s  +P.  t
) ) )
4645adantl 277 . . . . . . . . . 10  |-  ( ( ( ( a  e. 
P.  /\  b  e.  P. )  /\  (
c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  /\  ( r  e.  P.  /\  s  e. 
P.  /\  t  e.  P. ) )  ->  (
( r  +P.  s
)  +P.  t )  =  ( r  +P.  ( s  +P.  t
) ) )
4716, 15, 19, 44, 46caov12d 6105 . . . . . . . . 9  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( f  +P.  ( a  +P.  d
) )  =  ( a  +P.  ( f  +P.  d ) ) )
4846, 15, 16, 19caovassd 6083 . . . . . . . . 9  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( (
a  +P.  f )  +P.  d )  =  ( a  +P.  ( f  +P.  d ) ) )
4947, 48eqtr4d 2232 . . . . . . . 8  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( f  +P.  ( a  +P.  d
) )  =  ( ( a  +P.  f
)  +P.  d )
)
5046, 16, 25, 22caovassd 6083 . . . . . . . . 9  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( (
f  +P.  b )  +P.  c )  =  ( f  +P.  ( b  +P.  c ) ) )
5116, 25, 22, 44, 46caov32d 6104 . . . . . . . . 9  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( (
f  +P.  b )  +P.  c )  =  ( ( f  +P.  c
)  +P.  b )
)
5250, 51eqtr3d 2231 . . . . . . . 8  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( f  +P.  ( b  +P.  c
) )  =  ( ( f  +P.  c
)  +P.  b )
)
5349, 52breq12d 4046 . . . . . . 7  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( (
f  +P.  ( a  +P.  d ) )  <P 
( f  +P.  (
b  +P.  c )
)  <->  ( ( a  +P.  f )  +P.  d )  <P  (
( f  +P.  c
)  +P.  b )
) )
5442, 53bitrd 188 . . . . . 6  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( (
a  +P.  d )  <P  ( b  +P.  c
)  <->  ( ( a  +P.  f )  +P.  d )  <P  (
( f  +P.  c
)  +P.  b )
) )
55 ltaprg 7686 . . . . . . . . 9  |-  ( ( r  e.  P.  /\  s  e.  P.  /\  t  e.  P. )  ->  (
r  <P  s  <->  ( t  +P.  r )  <P  (
t  +P.  s )
) )
5655adantl 277 . . . . . . . 8  |-  ( ( ( ( a  e. 
P.  /\  b  e.  P. )  /\  (
c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  /\  ( r  e.  P.  /\  s  e. 
P.  /\  t  e.  P. ) )  ->  (
r  <P  s  <->  ( t  +P.  r )  <P  (
t  +P.  s )
) )
5756, 18, 30, 19, 44caovord2d 6093 . . . . . . 7  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( (
a  +P.  f )  <P  ( b  +P.  e
)  <->  ( ( a  +P.  f )  +P.  d )  <P  (
( b  +P.  e
)  +P.  d )
) )
58 addclpr 7604 . . . . . . . . . 10  |-  ( ( e  e.  P.  /\  d  e.  P. )  ->  ( e  +P.  d
)  e.  P. )
5928, 19, 58syl2anc 411 . . . . . . . . 9  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( e  +P.  d )  e.  P. )
6056, 59, 24, 25, 44caovord2d 6093 . . . . . . . 8  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( (
e  +P.  d )  <P  ( f  +P.  c
)  <->  ( ( e  +P.  d )  +P.  b )  <P  (
( f  +P.  c
)  +P.  b )
) )
6146, 25, 28, 19caovassd 6083 . . . . . . . . . 10  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( (
b  +P.  e )  +P.  d )  =  ( b  +P.  ( e  +P.  d ) ) )
6244, 25, 59caovcomd 6080 . . . . . . . . . 10  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( b  +P.  ( e  +P.  d
) )  =  ( ( e  +P.  d
)  +P.  b )
)
6361, 62eqtrd 2229 . . . . . . . . 9  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( (
b  +P.  e )  +P.  d )  =  ( ( e  +P.  d
)  +P.  b )
)
6463breq1d 4043 . . . . . . . 8  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( (
( b  +P.  e
)  +P.  d )  <P  ( ( f  +P.  c )  +P.  b
)  <->  ( ( e  +P.  d )  +P.  b )  <P  (
( f  +P.  c
)  +P.  b )
) )
6560, 64bitr4d 191 . . . . . . 7  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( (
e  +P.  d )  <P  ( f  +P.  c
)  <->  ( ( b  +P.  e )  +P.  d )  <P  (
( f  +P.  c
)  +P.  b )
) )
6657, 65orbi12d 794 . . . . . 6  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( (
( a  +P.  f
)  <P  ( b  +P.  e )  \/  (
e  +P.  d )  <P  ( f  +P.  c
) )  <->  ( (
( a  +P.  f
)  +P.  d )  <P  ( ( b  +P.  e )  +P.  d
)  \/  ( ( b  +P.  e )  +P.  d )  <P 
( ( f  +P.  c )  +P.  b
) ) ) )
6736, 54, 663imtr4d 203 . . . . 5  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( (
a  +P.  d )  <P  ( b  +P.  c
)  ->  ( (
a  +P.  f )  <P  ( b  +P.  e
)  \/  ( e  +P.  d )  <P 
( f  +P.  c
) ) ) )
68 ltsrprg 7814 . . . . . 6  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )
)  ->  ( [ <. a ,  b >. ]  ~R  <R  [ <. c ,  d >. ]  ~R  <->  ( a  +P.  d ) 
<P  ( b  +P.  c
) ) )
69683adant3 1019 . . . . 5  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( [ <. a ,  b >. ]  ~R  <R  [ <. c ,  d >. ]  ~R  <->  ( a  +P.  d ) 
<P  ( b  +P.  c
) ) )
70 ltsrprg 7814 . . . . . . 7  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( [ <. a ,  b >. ]  ~R  <R  [ <. e ,  f >. ]  ~R  <->  ( a  +P.  f ) 
<P  ( b  +P.  e
) ) )
71703adant2 1018 . . . . . 6  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( [ <. a ,  b >. ]  ~R  <R  [ <. e ,  f >. ]  ~R  <->  ( a  +P.  f ) 
<P  ( b  +P.  e
) ) )
72 ltsrprg 7814 . . . . . . . 8  |-  ( ( ( e  e.  P.  /\  f  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )
)  ->  ( [ <. e ,  f >. ]  ~R  <R  [ <. c ,  d >. ]  ~R  <->  ( e  +P.  d ) 
<P  ( f  +P.  c
) ) )
7372ancoms 268 . . . . . . 7  |-  ( ( ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( [ <. e ,  f >. ]  ~R  <R  [ <. c ,  d >. ]  ~R  <->  ( e  +P.  d ) 
<P  ( f  +P.  c
) ) )
74733adant1 1017 . . . . . 6  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( [ <. e ,  f >. ]  ~R  <R  [ <. c ,  d >. ]  ~R  <->  ( e  +P.  d ) 
<P  ( f  +P.  c
) ) )
7571, 74orbi12d 794 . . . . 5  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( ( [ <. a ,  b
>. ]  ~R  <R  [ <. e ,  f >. ]  ~R  \/  [ <. e ,  f
>. ]  ~R  <R  [ <. c ,  d >. ]  ~R  ) 
<->  ( ( a  +P.  f )  <P  (
b  +P.  e )  \/  ( e  +P.  d
)  <P  ( f  +P.  c ) ) ) )
7667, 69, 753imtr4d 203 . . . 4  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  ( [ <. a ,  b >. ]  ~R  <R  [ <. c ,  d >. ]  ~R  ->  ( [ <. a ,  b >. ]  ~R  <R  [ <. e ,  f
>. ]  ~R  \/  [ <. e ,  f >. ]  ~R  <R  [ <. c ,  d >. ]  ~R  ) ) )
772, 6, 10, 14, 763ecoptocl 6683 . . 3  |-  ( ( x  e.  R.  /\  y  e.  R.  /\  z  e.  R. )  ->  (
x  <R  y  ->  (
x  <R  z  \/  z  <R  y ) ) )
7877rgen3 2584 . 2  |-  A. x  e.  R.  A. y  e. 
R.  A. z  e.  R.  ( x  <R  y  -> 
( x  <R  z  \/  z  <R  y ) )
79 df-iso 4332 . 2  |-  (  <R  Or  R.  <->  (  <R  Po  R.  /\ 
A. x  e.  R.  A. y  e.  R.  A. z  e.  R.  (
x  <R  y  ->  (
x  <R  z  \/  z  <R  y ) ) ) )
801, 78, 79mpbir2an 944 1  |-  <R  Or  R.
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    <-> wb 105    \/ wo 709    /\ w3a 980    = wceq 1364    e. wcel 2167   A.wral 2475   <.cop 3625   class class class wbr 4033    Po wpo 4329    Or wor 4330  (class class class)co 5922   [cec 6590   P.cnp 7358    +P. cpp 7360    <P cltp 7362    ~R cer 7363   R.cnr 7364    <R cltr 7370
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 615  ax-in2 616  ax-io 710  ax-5 1461  ax-7 1462  ax-gen 1463  ax-ie1 1507  ax-ie2 1508  ax-8 1518  ax-10 1519  ax-11 1520  ax-i12 1521  ax-bndl 1523  ax-4 1524  ax-17 1540  ax-i9 1544  ax-ial 1548  ax-i5r 1549  ax-13 2169  ax-14 2170  ax-ext 2178  ax-coll 4148  ax-sep 4151  ax-nul 4159  ax-pow 4207  ax-pr 4242  ax-un 4468  ax-setind 4573  ax-iinf 4624
This theorem depends on definitions:  df-bi 117  df-dc 836  df-3or 981  df-3an 982  df-tru 1367  df-fal 1370  df-nf 1475  df-sb 1777  df-eu 2048  df-mo 2049  df-clab 2183  df-cleq 2189  df-clel 2192  df-nfc 2328  df-ne 2368  df-ral 2480  df-rex 2481  df-reu 2482  df-rab 2484  df-v 2765  df-sbc 2990  df-csb 3085  df-dif 3159  df-un 3161  df-in 3163  df-ss 3170  df-nul 3451  df-pw 3607  df-sn 3628  df-pr 3629  df-op 3631  df-uni 3840  df-int 3875  df-iun 3918  df-br 4034  df-opab 4095  df-mpt 4096  df-tr 4132  df-eprel 4324  df-id 4328  df-po 4331  df-iso 4332  df-iord 4401  df-on 4403  df-suc 4406  df-iom 4627  df-xp 4669  df-rel 4670  df-cnv 4671  df-co 4672  df-dm 4673  df-rn 4674  df-res 4675  df-ima 4676  df-iota 5219  df-fun 5260  df-fn 5261  df-f 5262  df-f1 5263  df-fo 5264  df-f1o 5265  df-fv 5266  df-ov 5925  df-oprab 5926  df-mpo 5927  df-1st 6198  df-2nd 6199  df-recs 6363  df-irdg 6428  df-1o 6474  df-2o 6475  df-oadd 6478  df-omul 6479  df-er 6592  df-ec 6594  df-qs 6598  df-ni 7371  df-pli 7372  df-mi 7373  df-lti 7374  df-plpq 7411  df-mpq 7412  df-enq 7414  df-nqqs 7415  df-plqqs 7416  df-mqqs 7417  df-1nqqs 7418  df-rq 7419  df-ltnqqs 7420  df-enq0 7491  df-nq0 7492  df-0nq0 7493  df-plq0 7494  df-mq0 7495  df-inp 7533  df-iplp 7535  df-iltp 7537  df-enr 7793  df-nr 7794  df-ltr 7797
This theorem is referenced by:  1ne0sr  7833  addgt0sr  7842  caucvgsrlemcl  7856  caucvgsrlemfv  7858  suplocsrlemb  7873  suplocsrlempr  7874  suplocsrlem  7875  axpre-ltirr  7949  axpre-ltwlin  7950  axpre-lttrn  7951
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