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Theorem aptiprleml 7196
Description: Lemma for aptipr 7198. (Contributed by Jim Kingdon, 28-Jan-2020.)
Assertion
Ref Expression
aptiprleml  |-  ( ( A  e.  P.  /\  B  e.  P.  /\  -.  B  <P  A )  -> 
( 1st `  A
)  C_  ( 1st `  B ) )

Proof of Theorem aptiprleml
Dummy variables  f  g  h  s  t  u  v  x are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 prop 7032 . . . . . . 7  |-  ( A  e.  P.  ->  <. ( 1st `  A ) ,  ( 2nd `  A
) >.  e.  P. )
2 prnmaxl 7045 . . . . . . 7  |-  ( (
<. ( 1st `  A
) ,  ( 2nd `  A ) >.  e.  P.  /\  x  e.  ( 1st `  A ) )  ->  E. s  e.  ( 1st `  A ) x 
<Q  s )
31, 2sylan 277 . . . . . 6  |-  ( ( A  e.  P.  /\  x  e.  ( 1st `  A ) )  ->  E. s  e.  ( 1st `  A ) x 
<Q  s )
43ad2ant2rl 495 . . . . 5  |-  ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  ->  E. s  e.  ( 1st `  A
) x  <Q  s
)
5 ltexnqi 6966 . . . . . . 7  |-  ( x 
<Q  s  ->  E. t  e.  Q.  ( x  +Q  t )  =  s )
65ad2antll 475 . . . . . 6  |-  ( ( ( ( A  e. 
P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  ( s  e.  ( 1st `  A
)  /\  x  <Q  s ) )  ->  E. t  e.  Q.  ( x  +Q  t )  =  s )
7 simplr 497 . . . . . . . . 9  |-  ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  ->  B  e.  P. )
87ad2antrr 472 . . . . . . . 8  |-  ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  ( s  e.  ( 1st `  A
)  /\  x  <Q  s ) )  /\  (
t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  ->  B  e.  P. )
9 simprl 498 . . . . . . . 8  |-  ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  ( s  e.  ( 1st `  A
)  /\  x  <Q  s ) )  /\  (
t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  ->  t  e.  Q. )
10 prop 7032 . . . . . . . . 9  |-  ( B  e.  P.  ->  <. ( 1st `  B ) ,  ( 2nd `  B
) >.  e.  P. )
11 prarloc2 7061 . . . . . . . . 9  |-  ( (
<. ( 1st `  B
) ,  ( 2nd `  B ) >.  e.  P.  /\  t  e.  Q. )  ->  E. u  e.  ( 1st `  B ) ( u  +Q  t
)  e.  ( 2nd `  B ) )
1210, 11sylan 277 . . . . . . . 8  |-  ( ( B  e.  P.  /\  t  e.  Q. )  ->  E. u  e.  ( 1st `  B ) ( u  +Q  t
)  e.  ( 2nd `  B ) )
138, 9, 12syl2anc 403 . . . . . . 7  |-  ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  ( s  e.  ( 1st `  A
)  /\  x  <Q  s ) )  /\  (
t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  ->  E. u  e.  ( 1st `  B
) ( u  +Q  t )  e.  ( 2nd `  B ) )
148adantr 270 . . . . . . . . . 10  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  B  e.  P. )
15 simprl 498 . . . . . . . . . 10  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  u  e.  ( 1st `  B
) )
16 elprnql 7038 . . . . . . . . . . 11  |-  ( (
<. ( 1st `  B
) ,  ( 2nd `  B ) >.  e.  P.  /\  u  e.  ( 1st `  B ) )  ->  u  e.  Q. )
1710, 16sylan 277 . . . . . . . . . 10  |-  ( ( B  e.  P.  /\  u  e.  ( 1st `  B ) )  ->  u  e.  Q. )
1814, 15, 17syl2anc 403 . . . . . . . . 9  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  u  e.  Q. )
19 simpll 496 . . . . . . . . . . 11  |-  ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  ->  A  e.  P. )
2019ad3antrrr 476 . . . . . . . . . 10  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  A  e.  P. )
21 simprr 499 . . . . . . . . . . 11  |-  ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  ->  x  e.  ( 1st `  A
) )
2221ad3antrrr 476 . . . . . . . . . 10  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  x  e.  ( 1st `  A
) )
23 elprnql 7038 . . . . . . . . . . 11  |-  ( (
<. ( 1st `  A
) ,  ( 2nd `  A ) >.  e.  P.  /\  x  e.  ( 1st `  A ) )  ->  x  e.  Q. )
241, 23sylan 277 . . . . . . . . . 10  |-  ( ( A  e.  P.  /\  x  e.  ( 1st `  A ) )  ->  x  e.  Q. )
2520, 22, 24syl2anc 403 . . . . . . . . 9  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  x  e.  Q. )
26 nqtri3or 6953 . . . . . . . . 9  |-  ( ( u  e.  Q.  /\  x  e.  Q. )  ->  ( u  <Q  x  \/  u  =  x  \/  x  <Q  u ) )
2718, 25, 26syl2anc 403 . . . . . . . 8  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  (
u  <Q  x  \/  u  =  x  \/  x  <Q  u ) )
2818adantr 270 . . . . . . . . . . . . . 14  |-  ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  /\  u  <Q  x )  ->  u  e.  Q. )
29 simplrl 502 . . . . . . . . . . . . . . 15  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  t  e.  Q. )
3029adantr 270 . . . . . . . . . . . . . 14  |-  ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  /\  u  <Q  x )  ->  t  e.  Q. )
31 addclnq 6932 . . . . . . . . . . . . . 14  |-  ( ( u  e.  Q.  /\  t  e.  Q. )  ->  ( u  +Q  t
)  e.  Q. )
3228, 30, 31syl2anc 403 . . . . . . . . . . . . 13  |-  ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  /\  u  <Q  x )  ->  (
u  +Q  t )  e.  Q. )
33 ltanqg 6957 . . . . . . . . . . . . . . . . . 18  |-  ( ( f  e.  Q.  /\  g  e.  Q.  /\  h  e.  Q. )  ->  (
f  <Q  g  <->  ( h  +Q  f )  <Q  (
h  +Q  g ) ) )
3433adantl 271 . . . . . . . . . . . . . . . . 17  |-  ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  /\  (
f  e.  Q.  /\  g  e.  Q.  /\  h  e.  Q. ) )  -> 
( f  <Q  g  <->  ( h  +Q  f ) 
<Q  ( h  +Q  g
) ) )
35 addcomnqg 6938 . . . . . . . . . . . . . . . . . 18  |-  ( ( f  e.  Q.  /\  g  e.  Q. )  ->  ( f  +Q  g
)  =  ( g  +Q  f ) )
3635adantl 271 . . . . . . . . . . . . . . . . 17  |-  ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  /\  (
f  e.  Q.  /\  g  e.  Q. )
)  ->  ( f  +Q  g )  =  ( g  +Q  f ) )
3734, 18, 25, 29, 36caovord2d 5814 . . . . . . . . . . . . . . . 16  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  (
u  <Q  x  <->  ( u  +Q  t )  <Q  (
x  +Q  t ) ) )
38 simplrr 503 . . . . . . . . . . . . . . . . . 18  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  (
x  +Q  t )  =  s )
39 simprl 498 . . . . . . . . . . . . . . . . . . 19  |-  ( ( ( ( A  e. 
P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  ( s  e.  ( 1st `  A
)  /\  x  <Q  s ) )  ->  s  e.  ( 1st `  A
) )
4039ad2antrr 472 . . . . . . . . . . . . . . . . . 18  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  s  e.  ( 1st `  A
) )
4138, 40eqeltrd 2164 . . . . . . . . . . . . . . . . 17  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  (
x  +Q  t )  e.  ( 1st `  A
) )
42 prcdnql 7041 . . . . . . . . . . . . . . . . . 18  |-  ( (
<. ( 1st `  A
) ,  ( 2nd `  A ) >.  e.  P.  /\  ( x  +Q  t
)  e.  ( 1st `  A ) )  -> 
( ( u  +Q  t )  <Q  (
x  +Q  t )  ->  ( u  +Q  t )  e.  ( 1st `  A ) ) )
431, 42sylan 277 . . . . . . . . . . . . . . . . 17  |-  ( ( A  e.  P.  /\  ( x  +Q  t
)  e.  ( 1st `  A ) )  -> 
( ( u  +Q  t )  <Q  (
x  +Q  t )  ->  ( u  +Q  t )  e.  ( 1st `  A ) ) )
4420, 41, 43syl2anc 403 . . . . . . . . . . . . . . . 16  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  (
( u  +Q  t
)  <Q  ( x  +Q  t )  ->  (
u  +Q  t )  e.  ( 1st `  A
) ) )
4537, 44sylbid 148 . . . . . . . . . . . . . . 15  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  (
u  <Q  x  ->  (
u  +Q  t )  e.  ( 1st `  A
) ) )
46 simprr 499 . . . . . . . . . . . . . . 15  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  (
u  +Q  t )  e.  ( 2nd `  B
) )
4745, 46jctild 309 . . . . . . . . . . . . . 14  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  (
u  <Q  x  ->  (
( u  +Q  t
)  e.  ( 2nd `  B )  /\  (
u  +Q  t )  e.  ( 1st `  A
) ) ) )
4847imp 122 . . . . . . . . . . . . 13  |-  ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  /\  u  <Q  x )  ->  (
( u  +Q  t
)  e.  ( 2nd `  B )  /\  (
u  +Q  t )  e.  ( 1st `  A
) ) )
49 eleq1 2150 . . . . . . . . . . . . . . 15  |-  ( v  =  ( u  +Q  t )  ->  (
v  e.  ( 2nd `  B )  <->  ( u  +Q  t )  e.  ( 2nd `  B ) ) )
50 eleq1 2150 . . . . . . . . . . . . . . 15  |-  ( v  =  ( u  +Q  t )  ->  (
v  e.  ( 1st `  A )  <->  ( u  +Q  t )  e.  ( 1st `  A ) ) )
5149, 50anbi12d 457 . . . . . . . . . . . . . 14  |-  ( v  =  ( u  +Q  t )  ->  (
( v  e.  ( 2nd `  B )  /\  v  e.  ( 1st `  A ) )  <->  ( ( u  +Q  t )  e.  ( 2nd `  B
)  /\  ( u  +Q  t )  e.  ( 1st `  A ) ) ) )
5251rspcev 2722 . . . . . . . . . . . . 13  |-  ( ( ( u  +Q  t
)  e.  Q.  /\  ( ( u  +Q  t )  e.  ( 2nd `  B )  /\  ( u  +Q  t )  e.  ( 1st `  A ) ) )  ->  E. v  e.  Q.  ( v  e.  ( 2nd `  B
)  /\  v  e.  ( 1st `  A ) ) )
5332, 48, 52syl2anc 403 . . . . . . . . . . . 12  |-  ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  /\  u  <Q  x )  ->  E. v  e.  Q.  ( v  e.  ( 2nd `  B
)  /\  v  e.  ( 1st `  A ) ) )
54 ltdfpr 7063 . . . . . . . . . . . . . 14  |-  ( ( B  e.  P.  /\  A  e.  P. )  ->  ( B  <P  A  <->  E. v  e.  Q.  ( v  e.  ( 2nd `  B
)  /\  v  e.  ( 1st `  A ) ) ) )
5514, 20, 54syl2anc 403 . . . . . . . . . . . . 13  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  ( B  <P  A  <->  E. v  e.  Q.  ( v  e.  ( 2nd `  B
)  /\  v  e.  ( 1st `  A ) ) ) )
5655adantr 270 . . . . . . . . . . . 12  |-  ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  /\  u  <Q  x )  ->  ( B  <P  A  <->  E. v  e.  Q.  ( v  e.  ( 2nd `  B
)  /\  v  e.  ( 1st `  A ) ) ) )
5753, 56mpbird 165 . . . . . . . . . . 11  |-  ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  /\  u  <Q  x )  ->  B  <P  A )
58 simplrl 502 . . . . . . . . . . . 12  |-  ( ( ( ( A  e. 
P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  ( s  e.  ( 1st `  A
)  /\  x  <Q  s ) )  ->  -.  B  <P  A )
5958ad3antrrr 476 . . . . . . . . . . 11  |-  ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  /\  u  <Q  x )  ->  -.  B  <P  A )
6057, 59pm2.21dd 585 . . . . . . . . . 10  |-  ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  /\  u  <Q  x )  ->  x  e.  ( 1st `  B
) )
6160ex 113 . . . . . . . . 9  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  (
u  <Q  x  ->  x  e.  ( 1st `  B
) ) )
62 eleq1 2150 . . . . . . . . . 10  |-  ( u  =  x  ->  (
u  e.  ( 1st `  B )  <->  x  e.  ( 1st `  B ) ) )
6315, 62syl5ibcom 153 . . . . . . . . 9  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  (
u  =  x  ->  x  e.  ( 1st `  B ) ) )
64 prcdnql 7041 . . . . . . . . . . 11  |-  ( (
<. ( 1st `  B
) ,  ( 2nd `  B ) >.  e.  P.  /\  u  e.  ( 1st `  B ) )  -> 
( x  <Q  u  ->  x  e.  ( 1st `  B ) ) )
6510, 64sylan 277 . . . . . . . . . 10  |-  ( ( B  e.  P.  /\  u  e.  ( 1st `  B ) )  -> 
( x  <Q  u  ->  x  e.  ( 1st `  B ) ) )
6614, 15, 65syl2anc 403 . . . . . . . . 9  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  (
x  <Q  u  ->  x  e.  ( 1st `  B
) ) )
6761, 63, 663jaod 1240 . . . . . . . 8  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  (
( u  <Q  x  \/  u  =  x  \/  x  <Q  u )  ->  x  e.  ( 1st `  B ) ) )
6827, 67mpd 13 . . . . . . 7  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  (
s  e.  ( 1st `  A )  /\  x  <Q  s ) )  /\  ( t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  /\  ( u  e.  ( 1st `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  B ) ) )  ->  x  e.  ( 1st `  B
) )
6913, 68rexlimddv 2493 . . . . . 6  |-  ( ( ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  ( s  e.  ( 1st `  A
)  /\  x  <Q  s ) )  /\  (
t  e.  Q.  /\  ( x  +Q  t
)  =  s ) )  ->  x  e.  ( 1st `  B ) )
706, 69rexlimddv 2493 . . . . 5  |-  ( ( ( ( A  e. 
P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  /\  ( s  e.  ( 1st `  A
)  /\  x  <Q  s ) )  ->  x  e.  ( 1st `  B
) )
714, 70rexlimddv 2493 . . . 4  |-  ( ( ( A  e.  P.  /\  B  e.  P. )  /\  ( -.  B  <P  A  /\  x  e.  ( 1st `  A ) ) )  ->  x  e.  ( 1st `  B
) )
7271expr 367 . . 3  |-  ( ( ( A  e.  P.  /\  B  e.  P. )  /\  -.  B  <P  A )  ->  ( x  e.  ( 1st `  A
)  ->  x  e.  ( 1st `  B ) ) )
73723impa 1138 . 2  |-  ( ( A  e.  P.  /\  B  e.  P.  /\  -.  B  <P  A )  -> 
( x  e.  ( 1st `  A )  ->  x  e.  ( 1st `  B ) ) )
7473ssrdv 3031 1  |-  ( ( A  e.  P.  /\  B  e.  P.  /\  -.  B  <P  A )  -> 
( 1st `  A
)  C_  ( 1st `  B ) )
Colors of variables: wff set class
Syntax hints:   -. wn 3    -> wi 4    /\ wa 102    <-> wb 103    \/ w3o 923    /\ w3a 924    = wceq 1289    e. wcel 1438   E.wrex 2360    C_ wss 2999   <.cop 3449   class class class wbr 3845   ` cfv 5015  (class class class)co 5652   1stc1st 5909   2ndc2nd 5910   Q.cnq 6837    +Q cplq 6839    <Q cltq 6842   P.cnp 6848    <P cltp 6852
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-in1 579  ax-in2 580  ax-io 665  ax-5 1381  ax-7 1382  ax-gen 1383  ax-ie1 1427  ax-ie2 1428  ax-8 1440  ax-10 1441  ax-11 1442  ax-i12 1443  ax-bndl 1444  ax-4 1445  ax-13 1449  ax-14 1450  ax-17 1464  ax-i9 1468  ax-ial 1472  ax-i5r 1473  ax-ext 2070  ax-coll 3954  ax-sep 3957  ax-nul 3965  ax-pow 4009  ax-pr 4036  ax-un 4260  ax-setind 4353  ax-iinf 4403
This theorem depends on definitions:  df-bi 115  df-dc 781  df-3or 925  df-3an 926  df-tru 1292  df-fal 1295  df-nf 1395  df-sb 1693  df-eu 1951  df-mo 1952  df-clab 2075  df-cleq 2081  df-clel 2084  df-nfc 2217  df-ne 2256  df-ral 2364  df-rex 2365  df-reu 2366  df-rab 2368  df-v 2621  df-sbc 2841  df-csb 2934  df-dif 3001  df-un 3003  df-in 3005  df-ss 3012  df-nul 3287  df-pw 3431  df-sn 3452  df-pr 3453  df-op 3455  df-uni 3654  df-int 3689  df-iun 3732  df-br 3846  df-opab 3900  df-mpt 3901  df-tr 3937  df-eprel 4116  df-id 4120  df-po 4123  df-iso 4124  df-iord 4193  df-on 4195  df-suc 4198  df-iom 4406  df-xp 4444  df-rel 4445  df-cnv 4446  df-co 4447  df-dm 4448  df-rn 4449  df-res 4450  df-ima 4451  df-iota 4980  df-fun 5017  df-fn 5018  df-f 5019  df-f1 5020  df-fo 5021  df-f1o 5022  df-fv 5023  df-ov 5655  df-oprab 5656  df-mpt2 5657  df-1st 5911  df-2nd 5912  df-recs 6070  df-irdg 6135  df-1o 6181  df-2o 6182  df-oadd 6185  df-omul 6186  df-er 6290  df-ec 6292  df-qs 6296  df-ni 6861  df-pli 6862  df-mi 6863  df-lti 6864  df-plpq 6901  df-mpq 6902  df-enq 6904  df-nqqs 6905  df-plqqs 6906  df-mqqs 6907  df-1nqqs 6908  df-rq 6909  df-ltnqqs 6910  df-enq0 6981  df-nq0 6982  df-0nq0 6983  df-plq0 6984  df-mq0 6985  df-inp 7023  df-iltp 7027
This theorem is referenced by:  aptipr  7198
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