activity
19962019
most citedRestrictions and extensions of semibounded operators

17 citations · 101 across the 37 of their papers we have counts for

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Showing 2017Show all

6 papers · 1 filter

math.FA2017

Spectral pairs and positive definite tempered distributions

Palle Jorgensen, Feng Tian

The present paper presents two new approaches to Fourier series and spectral analysis of singular measures.

math.FA2017

Positive definite (p.d.) functions vs p.d. distributions

Palle Jorgensen, Feng Tian

We give explicit transforms for Hilbert spaces associated with positive definite functions on , and positive definite tempered distributions, incl., generalizations to…

math.SP2017

Realizations and Factorizations of Positive Definite Kernels

Palle Jorgensen, Feng Tian

Given a fixed sigma-finite measure space , we shall study an associated family of positive definite kernels . Their factorizations will be studied…

math.FA2017

Reproducing kernels and choices of associated feature spaces, in the form of -spaces

Palle Jorgensen, Feng Tian

Motivated by applications to the study of stochastic processes, we introduce a new analysis of positive definite kernels , their reproducing kernel Hilbert spaces (RKHS), and an…

math.FA2017

Metric duality between positive definite kernels and boundary processes

Palle Jorgensen, Feng Tian

We study representations of positive definite kernels in a general setting, but with view to applications to harmonic analysis, to metric geometry, and to realizations of certa…

math.FA2017

Reflection positivity and spectral theory

Palle Jorgensen, Feng Tian

We consider reflection-positivity (Osterwalder-Schrader positivity, O.S.-p.) as it is used in the study of renormalization questions in physics. In concrete cases, this refers to s…