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非结合乘积[Nonassociative Product]
[2005-8-11]
iamet
发表在
∑〖数学〗
The number of nonassociative
-products with
elements preceding the rightmost left parameter is
(1)
(2)
where
is a
binomial coefficient
. The number of
-products in a nonassociative algebra is
(3)
where
is a
Catalan number
, 1, 1, 2, 5, 14, 42, 132, ... (Sloane's A000108).
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-products with 
is a binomial coefficient. The number of 
-products in a nonassociative algebra is 
is a Catalan number, 1, 1, 2, 5, 14, 42, 132, ... (Sloane's A000108).