In analysis, one considers integral operators which transform a functionf into a function Tf given by (Tf)(x) = ∫ K(x,y)f(y) dy. The function K is called the kernel of the operator T. This usage applies also to convolution operators such as the Dirichlet kernel.
All Wikipedia text
is available under the
terms of the GNU Free Documentation License
Search Encyclopedia
Search over one million articles, find something about almost anything!