Theorem caov32 6220

Description: Rearrange arguments in a commutative, associative operation. (Contributed by NM, 26-Aug-1995.)

Hypotheses

Ref	Expression
caov.1	|- A e. _V
caov.2	|- B e. _V
caov.3	|- C e. _V
caov.com	|- ( x F y ) = ( y F x )
caov.ass	|- ( ( x F y ) F z ) = ( x F ( y F z ) )

Assertion

Ref	Expression
caov32	|- ( ( A F B ) F C ) = ( ( A F C ) F B )

Distinct variable groups:   x, y, z, A   x, B, y, z   x, C, y, z   x, F, y, z

Proof of Theorem caov32

Step	Hyp	Ref	Expression
1		caov.2	. . . 4 |- B e. _V
2		caov.3	. . . 4 |- C e. _V
3		caov.com	. . . 4 |- ( x F y ) = ( y F x )
4	1, 2, 3	caovcom 6190	. . 3 |- ( B F C ) = ( C F B )
5	4	oveq2i 6039	. 2 |- ( A F ( B F C ) ) = ( A F ( C F B ) )
6		caov.1	. . 3 |- A e. _V
7		caov.ass	. . 3 |- ( ( x F y ) F z ) = ( x F ( y F z ) )
8	6, 1, 2, 7	caovass 6193	. 2 |- ( ( A F B ) F C ) = ( A F ( B F C ) )
9	6, 2, 1, 7	caovass 6193	. 2 |- ( ( A F C ) F B ) = ( A F ( C F B ) )
10	5, 8, 9	3eqtr4i 2262	1 |- ( ( A F B ) F C ) = ( ( A F C ) F B )

Syntax hints:   = wceq 1398   e. wcel 2202   _Vcvv 2803  (class class class)co 6028

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 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-ext 2213

This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1811  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2364  df-ral 2516  df-rex 2517  df-v 2805  df-un 3205  df-sn 3679  df-pr 3680  df-op 3682  df-uni 3899  df-br 4094  df-iota 5293  df-fv 5341  df-ov 6031

This theorem is referenced by:  caov31  6222