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Longer titles found: Positive-definite function on a group (view)

searching for Positive-definite function 5 found (19 total)

alternate case: positive-definite function

Mercer's theorem (1,942 words) [view diff] exact match in snippet view article find links to article

analysis, Mercer's theorem is a representation of a symmetric positive-definite function on a square as a sum of a convergent sequence of product functions

Class kappa function (317 words) [view diff] no match in snippet view article find links to article

_{r\rightarrow \infty }\alpha (r)=\infty } . A nondecreasing positive definite function β {\displaystyle \beta } satisfying all conditions of class K

Contraction (operator theory) (2,901 words) [view diff] exact match in snippet view article

operator-valued positive-definite function arises in this way. Recall that every (continuous) scalar-valued positive-definite function on a topological

Reproducing kernel Hilbert space (6,323 words) [view diff] no match in snippet view article find links to article

{\displaystyle K:X\times X\to \mathbb {R} } a continuous, symmetric, and positive definite function. Define the integral operator T K : L 2 ( X ) → L 2 ( X ) {\displaystyle

Zonal spherical function (6,698 words) [view diff] no match in snippet view article find links to article

_{K}h(xky)\,dk\,\,(x,y\in G).} h(1) =1 (normalisation) h is a positive definite function on G f * h is proportional to h for all f in Cc(K\G/K). These