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Theorem ercpbl 12750
Description: Translate the function compatibility relation to a quotient set. (Contributed by Mario Carneiro, 24-Feb-2015.) (Revised by Mario Carneiro, 12-Aug-2015.) (Revised by AV, 12-Jul-2024.)
Hypotheses
Ref Expression
ercpbl.r  |-  ( ph  ->  .~  Er  V )
ercpbl.v  |-  ( ph  ->  V  e.  W )
ercpbl.f  |-  F  =  ( x  e.  V  |->  [ x ]  .~  )
ercpbl.c  |-  ( (
ph  /\  ( a  e.  V  /\  b  e.  V ) )  -> 
( a  .+  b
)  e.  V )
ercpbl.e  |-  ( ph  ->  ( ( A  .~  C  /\  B  .~  D
)  ->  ( A  .+  B )  .~  ( C  .+  D ) ) )
Assertion
Ref Expression
ercpbl  |-  ( (
ph  /\  ( A  e.  V  /\  B  e.  V )  /\  ( C  e.  V  /\  D  e.  V )
)  ->  ( (
( F `  A
)  =  ( F `
 C )  /\  ( F `  B )  =  ( F `  D ) )  -> 
( F `  ( A  .+  B ) )  =  ( F `  ( C  .+  D ) ) ) )
Distinct variable groups:    x,  .~    a, b, x, A    B, b, x    x, C    x, D    V, a, b, x    .+ , a,
b, x    ph, a, b, x
Allowed substitution hints:    B( a)    C( a, b)    D( a, b)    .~ ( a, b)    F( x, a, b)    W( x, a, b)

Proof of Theorem ercpbl
Dummy variables  c  d are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 ercpbl.e . . 3  |-  ( ph  ->  ( ( A  .~  C  /\  B  .~  D
)  ->  ( A  .+  B )  .~  ( C  .+  D ) ) )
213ad2ant1 1018 . 2  |-  ( (
ph  /\  ( A  e.  V  /\  B  e.  V )  /\  ( C  e.  V  /\  D  e.  V )
)  ->  ( ( A  .~  C  /\  B  .~  D )  ->  ( A  .+  B )  .~  ( C  .+  D ) ) )
3 ercpbl.r . . . . 5  |-  ( ph  ->  .~  Er  V )
433ad2ant1 1018 . . . 4  |-  ( (
ph  /\  ( A  e.  V  /\  B  e.  V )  /\  ( C  e.  V  /\  D  e.  V )
)  ->  .~  Er  V
)
5 ercpbl.v . . . . 5  |-  ( ph  ->  V  e.  W )
653ad2ant1 1018 . . . 4  |-  ( (
ph  /\  ( A  e.  V  /\  B  e.  V )  /\  ( C  e.  V  /\  D  e.  V )
)  ->  V  e.  W )
7 ercpbl.f . . . 4  |-  F  =  ( x  e.  V  |->  [ x ]  .~  )
8 simp2l 1023 . . . 4  |-  ( (
ph  /\  ( A  e.  V  /\  B  e.  V )  /\  ( C  e.  V  /\  D  e.  V )
)  ->  A  e.  V )
9 simp3l 1025 . . . 4  |-  ( (
ph  /\  ( A  e.  V  /\  B  e.  V )  /\  ( C  e.  V  /\  D  e.  V )
)  ->  C  e.  V )
104, 6, 7, 8, 9ercpbllemg 12749 . . 3  |-  ( (
ph  /\  ( A  e.  V  /\  B  e.  V )  /\  ( C  e.  V  /\  D  e.  V )
)  ->  ( ( F `  A )  =  ( F `  C )  <->  A  .~  C ) )
11 simp2r 1024 . . . 4  |-  ( (
ph  /\  ( A  e.  V  /\  B  e.  V )  /\  ( C  e.  V  /\  D  e.  V )
)  ->  B  e.  V )
12 simp3r 1026 . . . 4  |-  ( (
ph  /\  ( A  e.  V  /\  B  e.  V )  /\  ( C  e.  V  /\  D  e.  V )
)  ->  D  e.  V )
134, 6, 7, 11, 12ercpbllemg 12749 . . 3  |-  ( (
ph  /\  ( A  e.  V  /\  B  e.  V )  /\  ( C  e.  V  /\  D  e.  V )
)  ->  ( ( F `  B )  =  ( F `  D )  <->  B  .~  D ) )
1410, 13anbi12d 473 . 2  |-  ( (
ph  /\  ( A  e.  V  /\  B  e.  V )  /\  ( C  e.  V  /\  D  e.  V )
)  ->  ( (
( F `  A
)  =  ( F `
 C )  /\  ( F `  B )  =  ( F `  D ) )  <->  ( A  .~  C  /\  B  .~  D ) ) )
15 ercpbl.c . . . . 5  |-  ( (
ph  /\  ( a  e.  V  /\  b  e.  V ) )  -> 
( a  .+  b
)  e.  V )
1615caovclg 6027 . . . 4  |-  ( (
ph  /\  ( A  e.  V  /\  B  e.  V ) )  -> 
( A  .+  B
)  e.  V )
17163adant3 1017 . . 3  |-  ( (
ph  /\  ( A  e.  V  /\  B  e.  V )  /\  ( C  e.  V  /\  D  e.  V )
)  ->  ( A  .+  B )  e.  V
)
18 simprl 529 . . . . 5  |-  ( (
ph  /\  ( C  e.  V  /\  D  e.  V ) )  ->  C  e.  V )
19 simprr 531 . . . . 5  |-  ( (
ph  /\  ( C  e.  V  /\  D  e.  V ) )  ->  D  e.  V )
2015ralrimivva 2559 . . . . . . 7  |-  ( ph  ->  A. a  e.  V  A. b  e.  V  ( a  .+  b
)  e.  V )
21 oveq1 5882 . . . . . . . . 9  |-  ( a  =  c  ->  (
a  .+  b )  =  ( c  .+  b ) )
2221eleq1d 2246 . . . . . . . 8  |-  ( a  =  c  ->  (
( a  .+  b
)  e.  V  <->  ( c  .+  b )  e.  V
) )
23 oveq2 5883 . . . . . . . . 9  |-  ( b  =  d  ->  (
c  .+  b )  =  ( c  .+  d ) )
2423eleq1d 2246 . . . . . . . 8  |-  ( b  =  d  ->  (
( c  .+  b
)  e.  V  <->  ( c  .+  d )  e.  V
) )
2522, 24cbvral2v 2717 . . . . . . 7  |-  ( A. a  e.  V  A. b  e.  V  (
a  .+  b )  e.  V  <->  A. c  e.  V  A. d  e.  V  ( c  .+  d
)  e.  V )
2620, 25sylib 122 . . . . . 6  |-  ( ph  ->  A. c  e.  V  A. d  e.  V  ( c  .+  d
)  e.  V )
2726adantr 276 . . . . 5  |-  ( (
ph  /\  ( C  e.  V  /\  D  e.  V ) )  ->  A. c  e.  V  A. d  e.  V  ( c  .+  d
)  e.  V )
28 ovrspc2v 5901 . . . . 5  |-  ( ( ( C  e.  V  /\  D  e.  V
)  /\  A. c  e.  V  A. d  e.  V  ( c  .+  d )  e.  V
)  ->  ( C  .+  D )  e.  V
)
2918, 19, 27, 28syl21anc 1237 . . . 4  |-  ( (
ph  /\  ( C  e.  V  /\  D  e.  V ) )  -> 
( C  .+  D
)  e.  V )
30293adant2 1016 . . 3  |-  ( (
ph  /\  ( A  e.  V  /\  B  e.  V )  /\  ( C  e.  V  /\  D  e.  V )
)  ->  ( C  .+  D )  e.  V
)
314, 6, 7, 17, 30ercpbllemg 12749 . 2  |-  ( (
ph  /\  ( A  e.  V  /\  B  e.  V )  /\  ( C  e.  V  /\  D  e.  V )
)  ->  ( ( F `  ( A  .+  B ) )  =  ( F `  ( C  .+  D ) )  <-> 
( A  .+  B
)  .~  ( C  .+  D ) ) )
322, 14, 313imtr4d 203 1  |-  ( (
ph  /\  ( A  e.  V  /\  B  e.  V )  /\  ( C  e.  V  /\  D  e.  V )
)  ->  ( (
( F `  A
)  =  ( F `
 C )  /\  ( F `  B )  =  ( F `  D ) )  -> 
( F `  ( A  .+  B ) )  =  ( F `  ( C  .+  D ) ) ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    /\ w3a 978    = wceq 1353    e. wcel 2148   A.wral 2455   class class class wbr 4004    |-> cmpt 4065   ` cfv 5217  (class class class)co 5875    Er wer 6532   [cec 6533
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-io 709  ax-5 1447  ax-7 1448  ax-gen 1449  ax-ie1 1493  ax-ie2 1494  ax-8 1504  ax-10 1505  ax-11 1506  ax-i12 1507  ax-bndl 1509  ax-4 1510  ax-17 1526  ax-i9 1530  ax-ial 1534  ax-i5r 1535  ax-14 2151  ax-ext 2159  ax-sep 4122  ax-pow 4175  ax-pr 4210
This theorem depends on definitions:  df-bi 117  df-3an 980  df-tru 1356  df-nf 1461  df-sb 1763  df-eu 2029  df-mo 2030  df-clab 2164  df-cleq 2170  df-clel 2173  df-nfc 2308  df-ral 2460  df-rex 2461  df-v 2740  df-sbc 2964  df-csb 3059  df-un 3134  df-in 3136  df-ss 3143  df-pw 3578  df-sn 3599  df-pr 3600  df-op 3602  df-uni 3811  df-br 4005  df-opab 4066  df-mpt 4067  df-id 4294  df-xp 4633  df-rel 4634  df-cnv 4635  df-co 4636  df-dm 4637  df-rn 4638  df-res 4639  df-ima 4640  df-iota 5179  df-fun 5219  df-fv 5225  df-ov 5878  df-er 6535  df-ec 6537
This theorem is referenced by:  qusaddvallemg  12752  qusaddflemg  12753
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