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Theorem ballotlemieq 28092
Description: If two countings share the same first tie, they also have the same swap function. (Contributed by Thierry Arnoux, 18-Apr-2017.)
Hypotheses
Ref Expression
ballotth.m  |-  M  e.  NN
ballotth.n  |-  N  e.  NN
ballotth.o  |-  O  =  { c  e.  ~P ( 1 ... ( M  +  N )
)  |  ( # `  c )  =  M }
ballotth.p  |-  P  =  ( x  e.  ~P O  |->  ( ( # `  x )  /  ( # `
 O ) ) )
ballotth.f  |-  F  =  ( c  e.  O  |->  ( i  e.  ZZ  |->  ( ( # `  (
( 1 ... i
)  i^i  c )
)  -  ( # `  ( ( 1 ... i )  \  c
) ) ) ) )
ballotth.e  |-  E  =  { c  e.  O  |  A. i  e.  ( 1 ... ( M  +  N ) ) 0  <  ( ( F `  c ) `
 i ) }
ballotth.mgtn  |-  N  < 
M
ballotth.i  |-  I  =  ( c  e.  ( O  \  E ) 
|->  sup ( { k  e.  ( 1 ... ( M  +  N
) )  |  ( ( F `  c
) `  k )  =  0 } ,  RR ,  `'  <  ) )
ballotth.s  |-  S  =  ( c  e.  ( O  \  E ) 
|->  ( i  e.  ( 1 ... ( M  +  N ) ) 
|->  if ( i  <_ 
( I `  c
) ,  ( ( ( I `  c
)  +  1 )  -  i ) ,  i ) ) )
Assertion
Ref Expression
ballotlemieq  |-  ( ( C  e.  ( O 
\  E )  /\  D  e.  ( O  \  E )  /\  (
I `  C )  =  ( I `  D ) )  -> 
( S `  C
)  =  ( S `
 D ) )
Distinct variable groups:    M, c    N, c    O, c    i, M   
i, N    i, O    k, M    k, N    k, O    i, c, F, k    C, i, k    i, E, k    C, k    k, I, c    E, c    i, I, c    S, k    D, i, k
Allowed substitution hints:    C( x, c)    D( x, c)    P( x, i, k, c)    S( x, i, c)    E( x)    F( x)    I( x)    M( x)    N( x)    O( x)

Proof of Theorem ballotlemieq
StepHypRef Expression
1 simpl 457 . . . . . 6  |-  ( ( ( I `  C
)  =  ( I `
 D )  /\  i  e.  ( 1 ... ( M  +  N ) ) )  ->  ( I `  C )  =  ( I `  D ) )
21breq2d 4459 . . . . 5  |-  ( ( ( I `  C
)  =  ( I `
 D )  /\  i  e.  ( 1 ... ( M  +  N ) ) )  ->  ( i  <_ 
( I `  C
)  <->  i  <_  (
I `  D )
) )
31oveq1d 6297 . . . . . 6  |-  ( ( ( I `  C
)  =  ( I `
 D )  /\  i  e.  ( 1 ... ( M  +  N ) ) )  ->  ( ( I `
 C )  +  1 )  =  ( ( I `  D
)  +  1 ) )
43oveq1d 6297 . . . . 5  |-  ( ( ( I `  C
)  =  ( I `
 D )  /\  i  e.  ( 1 ... ( M  +  N ) ) )  ->  ( ( ( I `  C )  +  1 )  -  i )  =  ( ( ( I `  D )  +  1 )  -  i ) )
5 eqidd 2468 . . . . 5  |-  ( ( ( I `  C
)  =  ( I `
 D )  /\  i  e.  ( 1 ... ( M  +  N ) ) )  ->  i  =  i )
62, 4, 5ifbieq12d 3966 . . . 4  |-  ( ( ( I `  C
)  =  ( I `
 D )  /\  i  e.  ( 1 ... ( M  +  N ) ) )  ->  if ( i  <_  ( I `  C ) ,  ( ( ( I `  C )  +  1 )  -  i ) ,  i )  =  if ( i  <_ 
( I `  D
) ,  ( ( ( I `  D
)  +  1 )  -  i ) ,  i ) )
76mpteq2dva 4533 . . 3  |-  ( ( I `  C )  =  ( I `  D )  ->  (
i  e.  ( 1 ... ( M  +  N ) )  |->  if ( i  <_  (
I `  C ) ,  ( ( ( I `  C )  +  1 )  -  i ) ,  i ) )  =  ( i  e.  ( 1 ... ( M  +  N ) )  |->  if ( i  <_  (
I `  D ) ,  ( ( ( I `  D )  +  1 )  -  i ) ,  i ) ) )
873ad2ant3 1019 . 2  |-  ( ( C  e.  ( O 
\  E )  /\  D  e.  ( O  \  E )  /\  (
I `  C )  =  ( I `  D ) )  -> 
( i  e.  ( 1 ... ( M  +  N ) ) 
|->  if ( i  <_ 
( I `  C
) ,  ( ( ( I `  C
)  +  1 )  -  i ) ,  i ) )  =  ( i  e.  ( 1 ... ( M  +  N ) ) 
|->  if ( i  <_ 
( I `  D
) ,  ( ( ( I `  D
)  +  1 )  -  i ) ,  i ) ) )
9 ballotth.m . . . 4  |-  M  e.  NN
10 ballotth.n . . . 4  |-  N  e.  NN
11 ballotth.o . . . 4  |-  O  =  { c  e.  ~P ( 1 ... ( M  +  N )
)  |  ( # `  c )  =  M }
12 ballotth.p . . . 4  |-  P  =  ( x  e.  ~P O  |->  ( ( # `  x )  /  ( # `
 O ) ) )
13 ballotth.f . . . 4  |-  F  =  ( c  e.  O  |->  ( i  e.  ZZ  |->  ( ( # `  (
( 1 ... i
)  i^i  c )
)  -  ( # `  ( ( 1 ... i )  \  c
) ) ) ) )
14 ballotth.e . . . 4  |-  E  =  { c  e.  O  |  A. i  e.  ( 1 ... ( M  +  N ) ) 0  <  ( ( F `  c ) `
 i ) }
15 ballotth.mgtn . . . 4  |-  N  < 
M
16 ballotth.i . . . 4  |-  I  =  ( c  e.  ( O  \  E ) 
|->  sup ( { k  e.  ( 1 ... ( M  +  N
) )  |  ( ( F `  c
) `  k )  =  0 } ,  RR ,  `'  <  ) )
17 ballotth.s . . . 4  |-  S  =  ( c  e.  ( O  \  E ) 
|->  ( i  e.  ( 1 ... ( M  +  N ) ) 
|->  if ( i  <_ 
( I `  c
) ,  ( ( ( I `  c
)  +  1 )  -  i ) ,  i ) ) )
189, 10, 11, 12, 13, 14, 15, 16, 17ballotlemsval 28084 . . 3  |-  ( C  e.  ( O  \  E )  ->  ( S `  C )  =  ( i  e.  ( 1 ... ( M  +  N )
)  |->  if ( i  <_  ( I `  C ) ,  ( ( ( I `  C )  +  1 )  -  i ) ,  i ) ) )
19183ad2ant1 1017 . 2  |-  ( ( C  e.  ( O 
\  E )  /\  D  e.  ( O  \  E )  /\  (
I `  C )  =  ( I `  D ) )  -> 
( S `  C
)  =  ( i  e.  ( 1 ... ( M  +  N
) )  |->  if ( i  <_  ( I `  C ) ,  ( ( ( I `  C )  +  1 )  -  i ) ,  i ) ) )
209, 10, 11, 12, 13, 14, 15, 16, 17ballotlemsval 28084 . . 3  |-  ( D  e.  ( O  \  E )  ->  ( S `  D )  =  ( i  e.  ( 1 ... ( M  +  N )
)  |->  if ( i  <_  ( I `  D ) ,  ( ( ( I `  D )  +  1 )  -  i ) ,  i ) ) )
21203ad2ant2 1018 . 2  |-  ( ( C  e.  ( O 
\  E )  /\  D  e.  ( O  \  E )  /\  (
I `  C )  =  ( I `  D ) )  -> 
( S `  D
)  =  ( i  e.  ( 1 ... ( M  +  N
) )  |->  if ( i  <_  ( I `  D ) ,  ( ( ( I `  D )  +  1 )  -  i ) ,  i ) ) )
228, 19, 213eqtr4d 2518 1  |-  ( ( C  e.  ( O 
\  E )  /\  D  e.  ( O  \  E )  /\  (
I `  C )  =  ( I `  D ) )  -> 
( S `  C
)  =  ( S `
 D ) )
Colors of variables: wff setvar class
Syntax hints:    -> wi 4    /\ wa 369    /\ w3a 973    = wceq 1379    e. wcel 1767   A.wral 2814   {crab 2818    \ cdif 3473    i^i cin 3475   ifcif 3939   ~Pcpw 4010   class class class wbr 4447    |-> cmpt 4505   `'ccnv 4998   ` cfv 5586  (class class class)co 6282   supcsup 7896   RRcr 9487   0cc0 9488   1c1 9489    + caddc 9491    < clt 9624    <_ cle 9625    - cmin 9801    / cdiv 10202   NNcn 10532   ZZcz 10860   ...cfz 11668   #chash 12367
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1601  ax-4 1612  ax-5 1680  ax-6 1719  ax-7 1739  ax-9 1771  ax-10 1786  ax-11 1791  ax-12 1803  ax-13 1968  ax-ext 2445  ax-rep 4558  ax-sep 4568  ax-nul 4576  ax-pr 4686
This theorem depends on definitions:  df-bi 185  df-or 370  df-an 371  df-3an 975  df-tru 1382  df-ex 1597  df-nf 1600  df-sb 1712  df-eu 2279  df-mo 2280  df-clab 2453  df-cleq 2459  df-clel 2462  df-nfc 2617  df-ne 2664  df-ral 2819  df-rex 2820  df-reu 2821  df-rab 2823  df-v 3115  df-sbc 3332  df-csb 3436  df-dif 3479  df-un 3481  df-in 3483  df-ss 3490  df-nul 3786  df-if 3940  df-sn 4028  df-pr 4030  df-op 4034  df-uni 4246  df-iun 4327  df-br 4448  df-opab 4506  df-mpt 4507  df-id 4795  df-xp 5005  df-rel 5006  df-cnv 5007  df-co 5008  df-dm 5009  df-rn 5010  df-res 5011  df-ima 5012  df-iota 5549  df-fun 5588  df-fn 5589  df-f 5590  df-f1 5591  df-fo 5592  df-f1o 5593  df-fv 5594  df-ov 6285
This theorem is referenced by:  ballotlemrinv0  28108
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