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Theorem ltsosr 8121
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 8120 . 2  |-  <R  Po  R.
2 df-nr 8084 . . . 4  |-  R.  =  ( ( P.  X.  P. ) /.  ~R  )
3 breq1 4128 . . . . 5  |-  ( [
<. a ,  b >. ]  ~R  =  x  -> 
( [ <. a ,  b >. ]  ~R  <R  [ <. c ,  d
>. ]  ~R  <->  x  <R  [
<. c ,  d >. ]  ~R  ) )
4 breq1 4128 . . . . . 6  |-  ( [
<. a ,  b >. ]  ~R  =  x  -> 
( [ <. a ,  b >. ]  ~R  <R  [ <. e ,  f
>. ]  ~R  <->  x  <R  [
<. e ,  f >. ]  ~R  ) )
54orbi1d 803 . . . . 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 4129 . . . . 5  |-  ( [
<. c ,  d >. ]  ~R  =  y  -> 
( x  <R  [ <. c ,  d >. ]  ~R  <->  x 
<R  y ) )
8 breq2 4129 . . . . . 6  |-  ( [
<. c ,  d >. ]  ~R  =  y  -> 
( [ <. e ,  f >. ]  ~R  <R  [ <. c ,  d
>. ]  ~R  <->  [ <. e ,  f >. ]  ~R  <R  y ) )
98orbi2d 802 . . . . 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 4129 . . . . . 6  |-  ( [
<. e ,  f >. ]  ~R  =  z  -> 
( x  <R  [ <. e ,  f >. ]  ~R  <->  x 
<R  z ) )
12 breq1 4128 . . . . . 6  |-  ( [
<. e ,  f >. ]  ~R  =  z  -> 
( [ <. e ,  f >. ]  ~R  <R  y  <->  z  <R  y
) )
1311, 12orbi12d 805 . . . . 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 1052 . . . . . . . . 9  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  a  e.  P. )
16 simp3r 1057 . . . . . . . . 9  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  f  e.  P. )
17 addclpr 7894 . . . . . . . . 9  |-  ( ( a  e.  P.  /\  f  e.  P. )  ->  ( a  +P.  f
)  e.  P. )
1815, 16, 17syl2anc 415 . . . . . . . 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 1055 . . . . . . . 8  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  d  e.  P. )
20 addclpr 7894 . . . . . . . 8  |-  ( ( ( a  +P.  f
)  e.  P.  /\  d  e.  P. )  ->  ( ( a  +P.  f )  +P.  d
)  e.  P. )
2118, 19, 20syl2anc 415 . . . . . . 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 1054 . . . . . . . . 9  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  c  e.  P. )
23 addclpr 7894 . . . . . . . . 9  |-  ( ( f  e.  P.  /\  c  e.  P. )  ->  ( f  +P.  c
)  e.  P. )
2416, 22, 23syl2anc 415 . . . . . . . 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 1053 . . . . . . . 8  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  b  e.  P. )
26 addclpr 7894 . . . . . . . 8  |-  ( ( ( f  +P.  c
)  e.  P.  /\  b  e.  P. )  ->  ( ( f  +P.  c )  +P.  b
)  e.  P. )
2724, 25, 26syl2anc 415 . . . . . . 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 1056 . . . . . . . . 9  |-  ( ( ( a  e.  P.  /\  b  e.  P. )  /\  ( c  e.  P.  /\  d  e.  P. )  /\  ( e  e.  P.  /\  f  e.  P. )
)  ->  e  e.  P. )
29 addclpr 7894 . . . . . . . . 9  |-  ( ( b  e.  P.  /\  e  e.  P. )  ->  ( b  +P.  e
)  e.  P. )
3025, 28, 29syl2anc 415 . . . . . . . 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 7894 . . . . . . . 8  |-  ( ( ( b  +P.  e
)  e.  P.  /\  d  e.  P. )  ->  ( ( b  +P.  e )  +P.  d
)  e.  P. )
3230, 19, 31syl2anc 415 . . . . . . 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 7953 . . . . . . . 8  |-  <P  Or  P.
34 sowlin 4460 . . . . . . . 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 428 . . . . . . 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 1278 . . . . . 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 7894 . . . . . . . . 9  |-  ( ( a  e.  P.  /\  d  e.  P. )  ->  ( a  +P.  d
)  e.  P. )
3815, 19, 37syl2anc 415 . . . . . . . 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 7894 . . . . . . . . 9  |-  ( ( b  e.  P.  /\  c  e.  P. )  ->  ( b  +P.  c
)  e.  P. )
4025, 22, 39syl2anc 415 . . . . . . . 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 7976 . . . . . . . 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 1278 . . . . . . 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 7935 . . . . . . . . . . 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 7936 . . . . . . . . . . 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 6261 . . . . . . . . 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 6239 . . . . . . . . 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 2274 . . . . . . . 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 6239 . . . . . . . . 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 6260 . . . . . . . . 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 2273 . . . . . . . 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 4138 . . . . . . 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 7976 . . . . . . . . 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 6249 . . . . . . 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 7894 . . . . . . . . . 10  |-  ( ( e  e.  P.  /\  d  e.  P. )  ->  ( e  +P.  d
)  e.  P. )
5928, 19, 58syl2anc 415 . . . . . . . . 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 6249 . . . . . . . 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 6239 . . . . . . . . . 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 6236 . . . . . . . . . 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 2271 . . . . . . . . 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 4135 . . . . . . . 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 805 . . . . . 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 8104 . . . . . 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 1048 . . . . 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 8104 . . . . . . 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 1047 . . . . . 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 8104 . . . . . . . 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 1046 . . . . . 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 805 . . . . 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 6888 . . 3  |-  ( ( x  e.  R.  /\  y  e.  R.  /\  z  e.  R. )  ->  (
x  <R  y  ->  (
x  <R  z  \/  z  <R  y ) ) )
7877rgen3 2637 . 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 4437 . 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 955 1  |-  <R  Or  R.
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    <-> wb 105    \/ wo 720    /\ w3a 1009    = wceq 1402    e. wcel 2209   A.wral 2528   <.cop 3708   class class class wbr 4125    Po wpo 4434    Or wor 4435  (class class class)co 6075   [cec 6795   P.cnp 7648    +P. cpp 7650    <P cltp 7652    ~R cer 7653   R.cnr 7654    <R cltr 7660
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 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-coll 4241  ax-sep 4244  ax-nul 4254  ax-pow 4306  ax-pr 4341  ax-un 4573  ax-setind 4679  ax-iinf 4730
This theorem depends on definitions:  df-bi 117  df-dc 847  df-3or 1010  df-3an 1011  df-tru 1405  df-fal 1408  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-ral 2533  df-rex 2534  df-reu 2535  df-rab 2537  df-v 2823  df-sbc 3052  df-csb 3148  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-nul 3521  df-pw 3687  df-sn 3711  df-pr 3712  df-op 3714  df-uni 3931  df-int 3966  df-iun 4009  df-br 4126  df-opab 4188  df-mpt 4189  df-tr 4225  df-eprel 4429  df-id 4433  df-po 4436  df-iso 4437  df-iord 4506  df-on 4508  df-suc 4511  df-iom 4733  df-xp 4775  df-rel 4776  df-cnv 4777  df-co 4778  df-dm 4779  df-rn 4780  df-res 4781  df-ima 4782  df-iota 5332  df-fun 5374  df-fn 5375  df-f 5376  df-f1 5377  df-fo 5378  df-f1o 5379  df-fv 5380  df-ov 6078  df-oprab 6079  df-mpo 6080  df-1st 6364  df-2nd 6365  df-recs 6566  df-irdg 6631  df-1o 6677  df-2o 6678  df-oadd 6681  df-omul 6682  df-er 6797  df-ec 6799  df-qs 6803  df-ni 7661  df-pli 7662  df-mi 7663  df-lti 7664  df-plpq 7701  df-mpq 7702  df-enq 7704  df-nqqs 7705  df-plqqs 7706  df-mqqs 7707  df-1nqqs 7708  df-rq 7709  df-ltnqqs 7710  df-enq0 7781  df-nq0 7782  df-0nq0 7783  df-plq0 7784  df-mq0 7785  df-inp 7823  df-iplp 7825  df-iltp 7827  df-enr 8083  df-nr 8084  df-ltr 8087
This theorem is referenced by:  1ne0sr  8123  addgt0sr  8132  caucvgsrlemcl  8146  caucvgsrlemfv  8148  suplocsrlemb  8163  suplocsrlempr  8164  suplocsrlem  8165  axpre-ltirr  8239  axpre-ltwlin  8240  axpre-lttrn  8241
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