On Harmonic Hilbert Spaces on Compact Abelian Groups
On Harmonic Hilbert Spaces on Compact Abelian Groups
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紧阿贝尔群上的调和希尔伯特空间
DOI:
10.1007/s00041-023-09992-4
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发表时间:
2023
影响因子:
1.2
通讯作者:
Giannakis, Dimitrios
中科院分区:
文献类型:
--
作者:
Das, Suddhasattwa;Giannakis, Dimitrios
Harmonic Hilbert spaces on locally compact abelian groups are reproducing kernel Hilbert spaces (RKHSs) of continuous functions constructed by Fourier transform of weightedspaces on the dual group. It is known that for suitably chosen subadditive weights, every such space is a Banach algebra with respect to pointwise multiplication of functions. In this paper, we study RKHSs associated with subconvolutive functions on the dual group. Sufficient conditions are established for these spaces to be symmetric Banach-algebras with respect to pointwise multiplication and complex conjugation of functions (here referred to as RKHAs). In addition, we study aspects of the spectra and state spaces of RKHAs. Sufficient conditions are established for an RKHA on a compact abelian groupGto have the same spectrum as the-algebra of continuous functions onG. We also consider one-parameter families of RKHSs associated with semigroups of self-adjoint Markov operators on, and show that in this setting subconvolutivity is a necessary and sufficient condition for these spaces to have RKHA structure. Finally, we establish embedding relationships between RKHAs and a class of Fourier–Wermer algebras that includes spaces of dominating mixed smoothness used in high-dimensional function approximation.
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DOI:
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发表时间:
1994
期刊:
影响因子:
--
作者:
R. Kerman;E. Sawyer
通讯作者:
E. Sawyer
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
Yulia Kuznetsova;C. Molitor
通讯作者:
C. Molitor
影响因子:
1
作者:
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通讯作者:
V. Menegatto
DOI:
10.2991/978-94-6239-115-4
发表时间:
2016
期刊:
arXiv: Mathematical Physics
影响因子:
--
作者:
G. Dell'Antonio
通讯作者:
G. Dell'Antonio
DOI:
--
发表时间:
2007-12
期刊:
--
影响因子:
--
作者:
K. Fukumizu;A. Gretton;Xiaohai Sun;B. Scholkopf
通讯作者:
K. Fukumizu;A. Gretton;Xiaohai Sun;B. Scholkopf