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Theorem lteupri 7558
Description: The difference from ltexpri 7554 is unique. (Contributed by Jim Kingdon, 7-Jul-2021.)
Assertion
Ref Expression
lteupri  |-  ( A 
<P  B  ->  E! x  e.  P.  ( A  +P.  x )  =  B )
Distinct variable groups:    x, A    x, B

Proof of Theorem lteupri
Dummy variable  y is distinct from all other variables.
StepHypRef Expression
1 ltexpri 7554 . 2  |-  ( A 
<P  B  ->  E. x  e.  P.  ( A  +P.  x )  =  B )
2 ltrelpr 7446 . . . . 5  |-  <P  C_  ( P.  X.  P. )
32brel 4656 . . . 4  |-  ( A 
<P  B  ->  ( A  e.  P.  /\  B  e.  P. ) )
43simpld 111 . . 3  |-  ( A 
<P  B  ->  A  e. 
P. )
5 eqtr3 2185 . . . . . . . 8  |-  ( ( ( A  +P.  x
)  =  B  /\  ( A  +P.  y )  =  B )  -> 
( A  +P.  x
)  =  ( A  +P.  y ) )
6 addcanprg 7557 . . . . . . . 8  |-  ( ( A  e.  P.  /\  x  e.  P.  /\  y  e.  P. )  ->  (
( A  +P.  x
)  =  ( A  +P.  y )  ->  x  =  y )
)
75, 6syl5 32 . . . . . . 7  |-  ( ( A  e.  P.  /\  x  e.  P.  /\  y  e.  P. )  ->  (
( ( A  +P.  x )  =  B  /\  ( A  +P.  y )  =  B )  ->  x  =  y ) )
873expa 1193 . . . . . 6  |-  ( ( ( A  e.  P.  /\  x  e.  P. )  /\  y  e.  P. )  ->  ( ( ( A  +P.  x )  =  B  /\  ( A  +P.  y )  =  B )  ->  x  =  y ) )
98ralrimiva 2539 . . . . 5  |-  ( ( A  e.  P.  /\  x  e.  P. )  ->  A. y  e.  P.  ( ( ( A  +P.  x )  =  B  /\  ( A  +P.  y )  =  B )  ->  x  =  y ) )
109ralrimiva 2539 . . . 4  |-  ( A  e.  P.  ->  A. x  e.  P.  A. y  e. 
P.  ( ( ( A  +P.  x )  =  B  /\  ( A  +P.  y )  =  B )  ->  x  =  y ) )
11 oveq2 5850 . . . . . 6  |-  ( x  =  y  ->  ( A  +P.  x )  =  ( A  +P.  y
) )
1211eqeq1d 2174 . . . . 5  |-  ( x  =  y  ->  (
( A  +P.  x
)  =  B  <->  ( A  +P.  y )  =  B ) )
1312rmo4 2919 . . . 4  |-  ( E* x  e.  P.  ( A  +P.  x )  =  B  <->  A. x  e.  P.  A. y  e.  P.  (
( ( A  +P.  x )  =  B  /\  ( A  +P.  y )  =  B )  ->  x  =  y ) )
1410, 13sylibr 133 . . 3  |-  ( A  e.  P.  ->  E* x  e.  P.  ( A  +P.  x )  =  B )
154, 14syl 14 . 2  |-  ( A 
<P  B  ->  E* x  e.  P.  ( A  +P.  x )  =  B )
16 reu5 2678 . 2  |-  ( E! x  e.  P.  ( A  +P.  x )  =  B  <->  ( E. x  e.  P.  ( A  +P.  x )  =  B  /\  E* x  e. 
P.  ( A  +P.  x )  =  B ) )
171, 15, 16sylanbrc 414 1  |-  ( A 
<P  B  ->  E! x  e.  P.  ( A  +P.  x )  =  B )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 103    /\ w3a 968    = wceq 1343    e. wcel 2136   A.wral 2444   E.wrex 2445   E!wreu 2446   E*wrmo 2447   class class class wbr 3982  (class class class)co 5842   P.cnp 7232    +P. cpp 7234    <P cltp 7236
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-rmo 2452  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  df-iltp 7411
This theorem is referenced by:  srpospr  7724
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