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math.FA2020
On Gaussian kernels on Hilbert spaces and kernels on Hyperbolic spaces
Jean Carlo Guella
This paper describes the concepts of Universal/ Integrally Strictly Positive Definite/ -Universal for the Gaussian kernel on a Hilbert space. As a consequence we obtain a si…
math.FA2020
Operator valued positive definite kernels and differentiable universality
Jean Carlo Guella
We present a characterization for a positive definite operator valued kernel to be universal or -universal, and apply these characterizations to a family of operator valued…