Integral representation of even positive-definite functions of two variables
AbstractWe obtain integral representation of even functions of two variables, for which the kernel $[k_1( x + y) + k_2( x - y)],\quad x, y \in R^2$, is positive definite.
How to Cite
Lopotko, O. V. “Integral Representation of Even Positive-Definite Functions of Two Variables”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 63, no. 6, June 2011, pp. 844-53, https://umj.imath.kiev.ua/index.php/umj/article/view/2768.