MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  ecovcom Structured version   Unicode version

Theorem ecovcom 7007
Description: Lemma used to transfer a commutative law via an equivalence relation. (Contributed by NM, 29-Aug-1995.) (Revised by David Abernethy, 4-Jun-2013.)
Hypotheses
Ref Expression
ecovcom.1  |-  C  =  ( ( S  X.  S ) /.  .~  )
ecovcom.2  |-  ( ( ( x  e.  S  /\  y  e.  S
)  /\  ( z  e.  S  /\  w  e.  S ) )  -> 
( [ <. x ,  y >. ]  .~  .+ 
[ <. z ,  w >. ]  .~  )  =  [ <. D ,  G >. ]  .~  )
ecovcom.3  |-  ( ( ( z  e.  S  /\  w  e.  S
)  /\  ( x  e.  S  /\  y  e.  S ) )  -> 
( [ <. z ,  w >. ]  .~  .+  [
<. x ,  y >. ]  .~  )  =  [ <. H ,  J >. ]  .~  )
ecovcom.4  |-  D  =  H
ecovcom.5  |-  G  =  J
Assertion
Ref Expression
ecovcom  |-  ( ( A  e.  C  /\  B  e.  C )  ->  ( A  .+  B
)  =  ( B 
.+  A ) )
Distinct variable groups:    x, y,
z, w, A    z, B, w    x,  .+ , y,
z, w    x,  .~ , y, z, w    x, S, y, z, w    z, C, w
Allowed substitution hints:    B( x, y)    C( x, y)    D( x, y, z, w)    G( x, y, z, w)    H( x, y, z, w)    J( x, y, z, w)

Proof of Theorem ecovcom
StepHypRef Expression
1 ecovcom.1 . 2  |-  C  =  ( ( S  X.  S ) /.  .~  )
2 oveq1 6080 . . 3  |-  ( [
<. x ,  y >. ]  .~  =  A  -> 
( [ <. x ,  y >. ]  .~  .+ 
[ <. z ,  w >. ]  .~  )  =  ( A  .+  [ <. z ,  w >. ]  .~  ) )
3 oveq2 6081 . . 3  |-  ( [
<. x ,  y >. ]  .~  =  A  -> 
( [ <. z ,  w >. ]  .~  .+  [
<. x ,  y >. ]  .~  )  =  ( [ <. z ,  w >. ]  .~  .+  A
) )
42, 3eqeq12d 2449 . 2  |-  ( [
<. x ,  y >. ]  .~  =  A  -> 
( ( [ <. x ,  y >. ]  .~  .+ 
[ <. z ,  w >. ]  .~  )  =  ( [ <. z ,  w >. ]  .~  .+  [
<. x ,  y >. ]  .~  )  <->  ( A  .+  [ <. z ,  w >. ]  .~  )  =  ( [ <. z ,  w >. ]  .~  .+  A ) ) )
5 oveq2 6081 . . 3  |-  ( [
<. z ,  w >. ]  .~  =  B  -> 
( A  .+  [ <. z ,  w >. ]  .~  )  =  ( A  .+  B ) )
6 oveq1 6080 . . 3  |-  ( [
<. z ,  w >. ]  .~  =  B  -> 
( [ <. z ,  w >. ]  .~  .+  A )  =  ( B  .+  A ) )
75, 6eqeq12d 2449 . 2  |-  ( [
<. z ,  w >. ]  .~  =  B  -> 
( ( A  .+  [
<. z ,  w >. ]  .~  )  =  ( [ <. z ,  w >. ]  .~  .+  A
)  <->  ( A  .+  B )  =  ( B  .+  A ) ) )
8 ecovcom.4 . . . 4  |-  D  =  H
9 ecovcom.5 . . . 4  |-  G  =  J
10 opeq12 3978 . . . . 5  |-  ( ( D  =  H  /\  G  =  J )  -> 
<. D ,  G >.  = 
<. H ,  J >. )
11 eceq1 6933 . . . . 5  |-  ( <. D ,  G >.  = 
<. H ,  J >.  ->  [ <. D ,  G >. ]  .~  =  [ <. H ,  J >. ]  .~  )
1210, 11syl 16 . . . 4  |-  ( ( D  =  H  /\  G  =  J )  ->  [ <. D ,  G >. ]  .~  =  [ <. H ,  J >. ]  .~  )
138, 9, 12mp2an 654 . . 3  |-  [ <. D ,  G >. ]  .~  =  [ <. H ,  J >. ]  .~
14 ecovcom.2 . . 3  |-  ( ( ( x  e.  S  /\  y  e.  S
)  /\  ( z  e.  S  /\  w  e.  S ) )  -> 
( [ <. x ,  y >. ]  .~  .+ 
[ <. z ,  w >. ]  .~  )  =  [ <. D ,  G >. ]  .~  )
15 ecovcom.3 . . . 4  |-  ( ( ( z  e.  S  /\  w  e.  S
)  /\  ( x  e.  S  /\  y  e.  S ) )  -> 
( [ <. z ,  w >. ]  .~  .+  [
<. x ,  y >. ]  .~  )  =  [ <. H ,  J >. ]  .~  )
1615ancoms 440 . . 3  |-  ( ( ( x  e.  S  /\  y  e.  S
)  /\  ( z  e.  S  /\  w  e.  S ) )  -> 
( [ <. z ,  w >. ]  .~  .+  [
<. x ,  y >. ]  .~  )  =  [ <. H ,  J >. ]  .~  )
1713, 14, 163eqtr4a 2493 . 2  |-  ( ( ( x  e.  S  /\  y  e.  S
)  /\  ( z  e.  S  /\  w  e.  S ) )  -> 
( [ <. x ,  y >. ]  .~  .+ 
[ <. z ,  w >. ]  .~  )  =  ( [ <. z ,  w >. ]  .~  .+  [
<. x ,  y >. ]  .~  ) )
181, 4, 7, 172ecoptocl 6987 1  |-  ( ( A  e.  C  /\  B  e.  C )  ->  ( A  .+  B
)  =  ( B 
.+  A ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 359    = wceq 1652    e. wcel 1725   <.cop 3809    X. cxp 4868  (class class class)co 6073   [cec 6895   /.cqs 6896
This theorem is referenced by:  addcomsr  8954  mulcomsr  8956  axmulcom  9022
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1555  ax-5 1566  ax-17 1626  ax-9 1666  ax-8 1687  ax-14 1729  ax-6 1744  ax-7 1749  ax-11 1761  ax-12 1950  ax-ext 2416  ax-sep 4322  ax-nul 4330  ax-pr 4395
This theorem depends on definitions:  df-bi 178  df-or 360  df-an 361  df-3an 938  df-tru 1328  df-ex 1551  df-nf 1554  df-sb 1659  df-clab 2422  df-cleq 2428  df-clel 2431  df-nfc 2560  df-ne 2600  df-ral 2702  df-rex 2703  df-rab 2706  df-v 2950  df-dif 3315  df-un 3317  df-in 3319  df-ss 3326  df-nul 3621  df-if 3732  df-sn 3812  df-pr 3813  df-op 3815  df-uni 4008  df-br 4205  df-opab 4259  df-xp 4876  df-cnv 4878  df-dm 4880  df-rn 4881  df-res 4882  df-ima 4883  df-iota 5410  df-fv 5454  df-ov 6076  df-ec 6899  df-qs 6903
  Copyright terms: Public domain W3C validator