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Theorem addcanprlemu 7556
Description: Lemma for addcanprg 7557. (Contributed by Jim Kingdon, 25-Dec-2019.)
Assertion
Ref Expression
addcanprlemu  |-  ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B
)  =  ( A  +P.  C ) )  ->  ( 2nd `  B
)  C_  ( 2nd `  C ) )

Proof of Theorem addcanprlemu
Dummy variables  f  g  h  q  r  s  t  u  v  w are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 prop 7416 . . . . . . 7  |-  ( B  e.  P.  ->  <. ( 1st `  B ) ,  ( 2nd `  B
) >.  e.  P. )
2 prnminu 7430 . . . . . . 7  |-  ( (
<. ( 1st `  B
) ,  ( 2nd `  B ) >.  e.  P.  /\  v  e.  ( 2nd `  B ) )  ->  E. r  e.  ( 2nd `  B ) r 
<Q  v )
31, 2sylan 281 . . . . . 6  |-  ( ( B  e.  P.  /\  v  e.  ( 2nd `  B ) )  ->  E. r  e.  ( 2nd `  B ) r 
<Q  v )
433ad2antl2 1150 . . . . 5  |-  ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e.  P. )  /\  v  e.  ( 2nd `  B ) )  ->  E. r  e.  ( 2nd `  B ) r  <Q  v )
54adantlr 469 . . . 4  |-  ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  ->  E. r  e.  ( 2nd `  B
) r  <Q  v
)
6 simprr 522 . . . . . 6  |-  ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e. 
P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  -> 
r  <Q  v )
7 ltexnqi 7350 . . . . . 6  |-  ( r 
<Q  v  ->  E. w  e.  Q.  ( r  +Q  w )  =  v )
86, 7syl 14 . . . . 5  |-  ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e. 
P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  ->  E. w  e.  Q.  ( r  +Q  w
)  =  v )
9 simprl 521 . . . . . . 7  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  /\  ( w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  ->  w  e.  Q. )
10 halfnqq 7351 . . . . . . 7  |-  ( w  e.  Q.  ->  E. t  e.  Q.  ( t  +Q  t )  =  w )
119, 10syl 14 . . . . . 6  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  /\  ( w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  ->  E. t  e.  Q.  ( t  +Q  t )  =  w )
12 prop 7416 . . . . . . . . . . . . . 14  |-  ( A  e.  P.  ->  <. ( 1st `  A ) ,  ( 2nd `  A
) >.  e.  P. )
13 prarloc2 7445 . . . . . . . . . . . . . 14  |-  ( (
<. ( 1st `  A
) ,  ( 2nd `  A ) >.  e.  P.  /\  t  e.  Q. )  ->  E. u  e.  ( 1st `  A ) ( u  +Q  t
)  e.  ( 2nd `  A ) )
1412, 13sylan 281 . . . . . . . . . . . . 13  |-  ( ( A  e.  P.  /\  t  e.  Q. )  ->  E. u  e.  ( 1st `  A ) ( u  +Q  t
)  e.  ( 2nd `  A ) )
1514adantrr 471 . . . . . . . . . . . 12  |-  ( ( A  e.  P.  /\  ( t  e.  Q.  /\  ( t  +Q  t
)  =  w ) )  ->  E. u  e.  ( 1st `  A
) ( u  +Q  t )  e.  ( 2nd `  A ) )
16153ad2antl1 1149 . . . . . . . . . . 11  |-  ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( t  e.  Q.  /\  ( t  +Q  t
)  =  w ) )  ->  E. u  e.  ( 1st `  A
) ( u  +Q  t )  e.  ( 2nd `  A ) )
1716adantlr 469 . . . . . . . . . 10  |-  ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  ( t  e. 
Q.  /\  ( t  +Q  t )  =  w ) )  ->  E. u  e.  ( 1st `  A
) ( u  +Q  t )  e.  ( 2nd `  A ) )
1817adantlr 469 . . . . . . . . 9  |-  ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e. 
P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
t  e.  Q.  /\  ( t  +Q  t
)  =  w ) )  ->  E. u  e.  ( 1st `  A
) ( u  +Q  t )  e.  ( 2nd `  A ) )
1918adantlr 469 . . . . . . . 8  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  /\  ( t  e.  Q.  /\  ( t  +Q  t
)  =  w ) )  ->  E. u  e.  ( 1st `  A
) ( u  +Q  t )  e.  ( 2nd `  A ) )
2019adantlr 469 . . . . . . 7  |-  ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B
)  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  ->  E. u  e.  ( 1st `  A ) ( u  +Q  t
)  e.  ( 2nd `  A ) )
21 simplll 523 . . . . . . . . . . . . . 14  |-  ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e. 
P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  -> 
( A  e.  P.  /\  B  e.  P.  /\  C  e.  P. )
)
2221ad3antrrr 484 . . . . . . . . . . . . 13  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  ( A  e.  P.  /\  B  e.  P.  /\  C  e. 
P. ) )
2322simp1d 999 . . . . . . . . . . . 12  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  A  e.  P. )
2422simp2d 1000 . . . . . . . . . . . 12  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  B  e.  P. )
25 addclpr 7478 . . . . . . . . . . . 12  |-  ( ( A  e.  P.  /\  B  e.  P. )  ->  ( A  +P.  B
)  e.  P. )
2623, 24, 25syl2anc 409 . . . . . . . . . . 11  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  ( A  +P.  B )  e. 
P. )
27 prop 7416 . . . . . . . . . . 11  |-  ( ( A  +P.  B )  e.  P.  ->  <. ( 1st `  ( A  +P.  B ) ) ,  ( 2nd `  ( A  +P.  B ) )
>.  e.  P. )
2826, 27syl 14 . . . . . . . . . 10  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  <. ( 1st `  ( A  +P.  B ) ) ,  ( 2nd `  ( A  +P.  B ) )
>.  e.  P. )
2923, 12syl 14 . . . . . . . . . . . . 13  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  <. ( 1st `  A ) ,  ( 2nd `  A
) >.  e.  P. )
30 simprl 521 . . . . . . . . . . . . 13  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  u  e.  ( 1st `  A
) )
31 elprnql 7422 . . . . . . . . . . . . 13  |-  ( (
<. ( 1st `  A
) ,  ( 2nd `  A ) >.  e.  P.  /\  u  e.  ( 1st `  A ) )  ->  u  e.  Q. )
3229, 30, 31syl2anc 409 . . . . . . . . . . . 12  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  u  e.  Q. )
33 simplrl 525 . . . . . . . . . . . 12  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  t  e.  Q. )
34 addclnq 7316 . . . . . . . . . . . 12  |-  ( ( u  e.  Q.  /\  t  e.  Q. )  ->  ( u  +Q  t
)  e.  Q. )
3532, 33, 34syl2anc 409 . . . . . . . . . . 11  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  (
u  +Q  t )  e.  Q. )
3624, 1syl 14 . . . . . . . . . . . 12  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  <. ( 1st `  B ) ,  ( 2nd `  B
) >.  e.  P. )
37 simprl 521 . . . . . . . . . . . . 13  |-  ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e. 
P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  -> 
r  e.  ( 2nd `  B ) )
3837ad3antrrr 484 . . . . . . . . . . . 12  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  r  e.  ( 2nd `  B
) )
39 elprnqu 7423 . . . . . . . . . . . 12  |-  ( (
<. ( 1st `  B
) ,  ( 2nd `  B ) >.  e.  P.  /\  r  e.  ( 2nd `  B ) )  -> 
r  e.  Q. )
4036, 38, 39syl2anc 409 . . . . . . . . . . 11  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  r  e.  Q. )
41 addclnq 7316 . . . . . . . . . . 11  |-  ( ( ( u  +Q  t
)  e.  Q.  /\  r  e.  Q. )  ->  ( ( u  +Q  t )  +Q  r
)  e.  Q. )
4235, 40, 41syl2anc 409 . . . . . . . . . 10  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  (
( u  +Q  t
)  +Q  r )  e.  Q. )
43 prdisj 7433 . . . . . . . . . 10  |-  ( (
<. ( 1st `  ( A  +P.  B ) ) ,  ( 2nd `  ( A  +P.  B ) )
>.  e.  P.  /\  (
( u  +Q  t
)  +Q  r )  e.  Q. )  ->  -.  ( ( ( u  +Q  t )  +Q  r )  e.  ( 1st `  ( A  +P.  B ) )  /\  ( ( u  +Q  t )  +Q  r )  e.  ( 2nd `  ( A  +P.  B ) ) ) )
4428, 42, 43syl2anc 409 . . . . . . . . 9  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  -.  ( ( ( u  +Q  t )  +Q  r )  e.  ( 1st `  ( A  +P.  B ) )  /\  ( ( u  +Q  t )  +Q  r )  e.  ( 2nd `  ( A  +P.  B ) ) ) )
45 addassnqg 7323 . . . . . . . . . . . . . . 15  |-  ( ( u  e.  Q.  /\  t  e.  Q.  /\  r  e.  Q. )  ->  (
( u  +Q  t
)  +Q  r )  =  ( u  +Q  ( t  +Q  r
) ) )
4632, 33, 40, 45syl3anc 1228 . . . . . . . . . . . . . 14  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  (
( u  +Q  t
)  +Q  r )  =  ( u  +Q  ( t  +Q  r
) ) )
47 addcomnqg 7322 . . . . . . . . . . . . . . . 16  |-  ( ( t  e.  Q.  /\  r  e.  Q. )  ->  ( t  +Q  r
)  =  ( r  +Q  t ) )
4847oveq2d 5858 . . . . . . . . . . . . . . 15  |-  ( ( t  e.  Q.  /\  r  e.  Q. )  ->  ( u  +Q  (
t  +Q  r ) )  =  ( u  +Q  ( r  +Q  t ) ) )
4933, 40, 48syl2anc 409 . . . . . . . . . . . . . 14  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  (
u  +Q  ( t  +Q  r ) )  =  ( u  +Q  ( r  +Q  t
) ) )
5046, 49eqtrd 2198 . . . . . . . . . . . . 13  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  (
( u  +Q  t
)  +Q  r )  =  ( u  +Q  ( r  +Q  t
) ) )
5150adantr 274 . . . . . . . . . . . 12  |-  ( ( ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e. 
P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  /\  ( w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  /\  (
r  +Q  t )  e.  ( 1st `  C
) )  ->  (
( u  +Q  t
)  +Q  r )  =  ( u  +Q  ( r  +Q  t
) ) )
52 simplrl 525 . . . . . . . . . . . . 13  |-  ( ( ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e. 
P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  /\  ( w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  /\  (
r  +Q  t )  e.  ( 1st `  C
) )  ->  u  e.  ( 1st `  A
) )
53 simpr 109 . . . . . . . . . . . . 13  |-  ( ( ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e. 
P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  /\  ( w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  /\  (
r  +Q  t )  e.  ( 1st `  C
) )  ->  (
r  +Q  t )  e.  ( 1st `  C
) )
5423adantr 274 . . . . . . . . . . . . . 14  |-  ( ( ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e. 
P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  /\  ( w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  /\  (
r  +Q  t )  e.  ( 1st `  C
) )  ->  A  e.  P. )
5522simp3d 1001 . . . . . . . . . . . . . . 15  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  C  e.  P. )
5655adantr 274 . . . . . . . . . . . . . 14  |-  ( ( ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e. 
P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  /\  ( w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  /\  (
r  +Q  t )  e.  ( 1st `  C
) )  ->  C  e.  P. )
57 df-iplp 7409 . . . . . . . . . . . . . . 15  |-  +P.  =  ( q  e.  P. ,  s  e.  P.  |->  <. { f  e.  Q.  |  E. g  e.  Q.  E. h  e.  Q.  (
g  e.  ( 1st `  q )  /\  h  e.  ( 1st `  s
)  /\  f  =  ( g  +Q  h
) ) } ,  { f  e.  Q.  |  E. g  e.  Q.  E. h  e.  Q.  (
g  e.  ( 2nd `  q )  /\  h  e.  ( 2nd `  s
)  /\  f  =  ( g  +Q  h
) ) } >. )
58 addclnq 7316 . . . . . . . . . . . . . . 15  |-  ( ( g  e.  Q.  /\  h  e.  Q. )  ->  ( g  +Q  h
)  e.  Q. )
5957, 58genpprecll 7455 . . . . . . . . . . . . . 14  |-  ( ( A  e.  P.  /\  C  e.  P. )  ->  ( ( u  e.  ( 1st `  A
)  /\  ( r  +Q  t )  e.  ( 1st `  C ) )  ->  ( u  +Q  ( r  +Q  t
) )  e.  ( 1st `  ( A  +P.  C ) ) ) )
6054, 56, 59syl2anc 409 . . . . . . . . . . . . 13  |-  ( ( ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e. 
P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  /\  ( w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  /\  (
r  +Q  t )  e.  ( 1st `  C
) )  ->  (
( u  e.  ( 1st `  A )  /\  ( r  +Q  t )  e.  ( 1st `  C ) )  ->  ( u  +Q  ( r  +Q  t
) )  e.  ( 1st `  ( A  +P.  C ) ) ) )
6152, 53, 60mp2and 430 . . . . . . . . . . . 12  |-  ( ( ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e. 
P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  /\  ( w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  /\  (
r  +Q  t )  e.  ( 1st `  C
) )  ->  (
u  +Q  ( r  +Q  t ) )  e.  ( 1st `  ( A  +P.  C ) ) )
6251, 61eqeltrd 2243 . . . . . . . . . . 11  |-  ( ( ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e. 
P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  /\  ( w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  /\  (
r  +Q  t )  e.  ( 1st `  C
) )  ->  (
( u  +Q  t
)  +Q  r )  e.  ( 1st `  ( A  +P.  C ) ) )
63 fveq2 5486 . . . . . . . . . . . . 13  |-  ( ( A  +P.  B )  =  ( A  +P.  C )  ->  ( 1st `  ( A  +P.  B
) )  =  ( 1st `  ( A  +P.  C ) ) )
6463eleq2d 2236 . . . . . . . . . . . 12  |-  ( ( A  +P.  B )  =  ( A  +P.  C )  ->  ( (
( u  +Q  t
)  +Q  r )  e.  ( 1st `  ( A  +P.  B ) )  <-> 
( ( u  +Q  t )  +Q  r
)  e.  ( 1st `  ( A  +P.  C
) ) ) )
6564ad7antlr 493 . . . . . . . . . . 11  |-  ( ( ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e. 
P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  /\  ( w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  /\  (
r  +Q  t )  e.  ( 1st `  C
) )  ->  (
( ( u  +Q  t )  +Q  r
)  e.  ( 1st `  ( A  +P.  B
) )  <->  ( (
u  +Q  t )  +Q  r )  e.  ( 1st `  ( A  +P.  C ) ) ) )
6662, 65mpbird 166 . . . . . . . . . 10  |-  ( ( ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e. 
P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  /\  ( w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  /\  (
r  +Q  t )  e.  ( 1st `  C
) )  ->  (
( u  +Q  t
)  +Q  r )  e.  ( 1st `  ( A  +P.  B ) ) )
6757, 58genppreclu 7456 . . . . . . . . . . . . . . . . . . 19  |-  ( ( A  e.  P.  /\  B  e.  P. )  ->  ( ( ( u  +Q  t )  e.  ( 2nd `  A
)  /\  r  e.  ( 2nd `  B ) )  ->  ( (
u  +Q  t )  +Q  r )  e.  ( 2nd `  ( A  +P.  B ) ) ) )
6867ancomsd 267 . . . . . . . . . . . . . . . . . 18  |-  ( ( A  e.  P.  /\  B  e.  P. )  ->  ( ( r  e.  ( 2nd `  B
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) )  ->  ( (
u  +Q  t )  +Q  r )  e.  ( 2nd `  ( A  +P.  B ) ) ) )
69683adant3 1007 . . . . . . . . . . . . . . . . 17  |-  ( ( A  e.  P.  /\  B  e.  P.  /\  C  e.  P. )  ->  (
( r  e.  ( 2nd `  B )  /\  ( u  +Q  t )  e.  ( 2nd `  A ) )  ->  ( (
u  +Q  t )  +Q  r )  e.  ( 2nd `  ( A  +P.  B ) ) ) )
7069ad2antrr 480 . . . . . . . . . . . . . . . 16  |-  ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  ->  ( (
r  e.  ( 2nd `  B )  /\  (
u  +Q  t )  e.  ( 2nd `  A
) )  ->  (
( u  +Q  t
)  +Q  r )  e.  ( 2nd `  ( A  +P.  B ) ) ) )
7170imp 123 . . . . . . . . . . . . . . 15  |-  ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e. 
P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  (
u  +Q  t )  e.  ( 2nd `  A
) ) )  -> 
( ( u  +Q  t )  +Q  r
)  e.  ( 2nd `  ( A  +P.  B
) ) )
7271adantrlr 477 . . . . . . . . . . . . . 14  |-  ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e. 
P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
( r  e.  ( 2nd `  B )  /\  r  <Q  v
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  (
( u  +Q  t
)  +Q  r )  e.  ( 2nd `  ( A  +P.  B ) ) )
7372anassrs 398 . . . . . . . . . . . . 13  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  /\  ( u  +Q  t
)  e.  ( 2nd `  A ) )  -> 
( ( u  +Q  t )  +Q  r
)  e.  ( 2nd `  ( A  +P.  B
) ) )
7473ad2ant2rl 503 . . . . . . . . . . . 12  |-  ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B
)  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  (
( u  +Q  t
)  +Q  r )  e.  ( 2nd `  ( A  +P.  B ) ) )
7574adantlr 469 . . . . . . . . . . 11  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  (
( u  +Q  t
)  +Q  r )  e.  ( 2nd `  ( A  +P.  B ) ) )
7675adantr 274 . . . . . . . . . 10  |-  ( ( ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e. 
P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  /\  ( w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  /\  (
r  +Q  t )  e.  ( 1st `  C
) )  ->  (
( u  +Q  t
)  +Q  r )  e.  ( 2nd `  ( A  +P.  B ) ) )
7766, 76jca 304 . . . . . . . . 9  |-  ( ( ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e. 
P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  /\  ( w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  /\  (
r  +Q  t )  e.  ( 1st `  C
) )  ->  (
( ( u  +Q  t )  +Q  r
)  e.  ( 1st `  ( A  +P.  B
) )  /\  (
( u  +Q  t
)  +Q  r )  e.  ( 2nd `  ( A  +P.  B ) ) ) )
7844, 77mtand 655 . . . . . . . 8  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  -.  ( r  +Q  t
)  e.  ( 1st `  C ) )
79 prop 7416 . . . . . . . . . . 11  |-  ( C  e.  P.  ->  <. ( 1st `  C ) ,  ( 2nd `  C
) >.  e.  P. )
8055, 79syl 14 . . . . . . . . . 10  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  <. ( 1st `  C ) ,  ( 2nd `  C
) >.  e.  P. )
81 ltaddnq 7348 . . . . . . . . . . . . . 14  |-  ( ( t  e.  Q.  /\  t  e.  Q. )  ->  t  <Q  ( t  +Q  t ) )
8233, 33, 81syl2anc 409 . . . . . . . . . . . . 13  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  t  <Q  ( t  +Q  t
) )
83 simplrr 526 . . . . . . . . . . . . 13  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  (
t  +Q  t )  =  w )
8482, 83breqtrd 4008 . . . . . . . . . . . 12  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  t  <Q  w )
85 ltanqi 7343 . . . . . . . . . . . 12  |-  ( ( t  <Q  w  /\  r  e.  Q. )  ->  ( r  +Q  t
)  <Q  ( r  +Q  w ) )
8684, 40, 85syl2anc 409 . . . . . . . . . . 11  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  (
r  +Q  t ) 
<Q  ( r  +Q  w
) )
87 simprr 522 . . . . . . . . . . . 12  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  /\  ( w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  ->  ( r  +Q  w )  =  v )
8887ad2antrr 480 . . . . . . . . . . 11  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  (
r  +Q  w )  =  v )
8986, 88breqtrd 4008 . . . . . . . . . 10  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  (
r  +Q  t ) 
<Q  v )
90 prloc 7432 . . . . . . . . . 10  |-  ( (
<. ( 1st `  C
) ,  ( 2nd `  C ) >.  e.  P.  /\  ( r  +Q  t
)  <Q  v )  -> 
( ( r  +Q  t )  e.  ( 1st `  C )  \/  v  e.  ( 2nd `  C ) ) )
9180, 89, 90syl2anc 409 . . . . . . . . 9  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  (
( r  +Q  t
)  e.  ( 1st `  C )  \/  v  e.  ( 2nd `  C
) ) )
9291orcomd 719 . . . . . . . 8  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  (
v  e.  ( 2nd `  C )  \/  (
r  +Q  t )  e.  ( 1st `  C
) ) )
9378, 92ecased 1339 . . . . . . 7  |-  ( ( ( ( ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  /\  ( u  e.  ( 1st `  A
)  /\  ( u  +Q  t )  e.  ( 2nd `  A ) ) )  ->  v  e.  ( 2nd `  C
) )
9420, 93rexlimddv 2588 . . . . . 6  |-  ( ( ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B
)  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  /\  ( r  e.  ( 2nd `  B
)  /\  r  <Q  v ) )  /\  (
w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  /\  ( t  e.  Q.  /\  (
t  +Q  t )  =  w ) )  ->  v  e.  ( 2nd `  C ) )
9511, 94rexlimddv 2588 . . . . 5  |-  ( ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  /\  ( w  e.  Q.  /\  ( r  +Q  w
)  =  v ) )  ->  v  e.  ( 2nd `  C ) )
968, 95rexlimddv 2588 . . . 4  |-  ( ( ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e. 
P. )  /\  ( A  +P.  B )  =  ( A  +P.  C
) )  /\  v  e.  ( 2nd `  B
) )  /\  (
r  e.  ( 2nd `  B )  /\  r  <Q  v ) )  -> 
v  e.  ( 2nd `  C ) )
975, 96rexlimddv 2588 . . 3  |-  ( ( ( ( A  e. 
P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B )  =  ( A  +P.  C ) )  /\  v  e.  ( 2nd `  B ) )  ->  v  e.  ( 2nd `  C ) )
9897ex 114 . 2  |-  ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B
)  =  ( A  +P.  C ) )  ->  ( v  e.  ( 2nd `  B
)  ->  v  e.  ( 2nd `  C ) ) )
9998ssrdv 3148 1  |-  ( ( ( A  e.  P.  /\  B  e.  P.  /\  C  e.  P. )  /\  ( A  +P.  B
)  =  ( A  +P.  C ) )  ->  ( 2nd `  B
)  C_  ( 2nd `  C ) )
Colors of variables: wff set class
Syntax hints:   -. wn 3    -> wi 4    /\ wa 103    <-> wb 104    \/ wo 698    /\ w3a 968    = wceq 1343    e. wcel 2136   E.wrex 2445    C_ wss 3116   <.cop 3579   class class class wbr 3982   ` cfv 5188  (class class class)co 5842   1stc1st 6106   2ndc2nd 6107   Q.cnq 7221    +Q cplq 7223    <Q cltq 7226   P.cnp 7232    +P. cpp 7234
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 604  ax-in2 605  ax-io 699  ax-5 1435  ax-7 1436  ax-gen 1437  ax-ie1 1481  ax-ie2 1482  ax-8 1492  ax-10 1493  ax-11 1494  ax-i12 1495  ax-bndl 1497  ax-4 1498  ax-17 1514  ax-i9 1518  ax-ial 1522  ax-i5r 1523  ax-13 2138  ax-14 2139  ax-ext 2147  ax-coll 4097  ax-sep 4100  ax-nul 4108  ax-pow 4153  ax-pr 4187  ax-un 4411  ax-setind 4514  ax-iinf 4565
This theorem depends on definitions:  df-bi 116  df-dc 825  df-3or 969  df-3an 970  df-tru 1346  df-fal 1349  df-nf 1449  df-sb 1751  df-eu 2017  df-mo 2018  df-clab 2152  df-cleq 2158  df-clel 2161  df-nfc 2297  df-ne 2337  df-ral 2449  df-rex 2450  df-reu 2451  df-rab 2453  df-v 2728  df-sbc 2952  df-csb 3046  df-dif 3118  df-un 3120  df-in 3122  df-ss 3129  df-nul 3410  df-pw 3561  df-sn 3582  df-pr 3583  df-op 3585  df-uni 3790  df-int 3825  df-iun 3868  df-br 3983  df-opab 4044  df-mpt 4045  df-tr 4081  df-eprel 4267  df-id 4271  df-po 4274  df-iso 4275  df-iord 4344  df-on 4346  df-suc 4349  df-iom 4568  df-xp 4610  df-rel 4611  df-cnv 4612  df-co 4613  df-dm 4614  df-rn 4615  df-res 4616  df-ima 4617  df-iota 5153  df-fun 5190  df-fn 5191  df-f 5192  df-f1 5193  df-fo 5194  df-f1o 5195  df-fv 5196  df-ov 5845  df-oprab 5846  df-mpo 5847  df-1st 6108  df-2nd 6109  df-recs 6273  df-irdg 6338  df-1o 6384  df-2o 6385  df-oadd 6388  df-omul 6389  df-er 6501  df-ec 6503  df-qs 6507  df-ni 7245  df-pli 7246  df-mi 7247  df-lti 7248  df-plpq 7285  df-mpq 7286  df-enq 7288  df-nqqs 7289  df-plqqs 7290  df-mqqs 7291  df-1nqqs 7292  df-rq 7293  df-ltnqqs 7294  df-enq0 7365  df-nq0 7366  df-0nq0 7367  df-plq0 7368  df-mq0 7369  df-inp 7407  df-iplp 7409
This theorem is referenced by:  addcanprg  7557
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