Yeah, there are tons of associative functions. For example, f(x,y)=(x^k+y^k)^(1/k) is associative for any k, but linear only for k=1.
Yeah, there are tons of associative functions. For example, f(x,y)=(x^k+y^k)^(1/k) is associative for any k, but linear only for k=1.