Results 91 to 100 of about 165,123,802 (106)

Sub-direct sum of operators on Hilbert spaces and nonnegative Moore—Penrose inverses

Acta Scientiarum Mathematicarum, 2015
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Jose, Shani, Sivakumar, K. C.
openaire   +1 more source

On spectrality criterion for operators on a direct sum of Hilbert spaces

Israel Journal of Mathematics, 1965
In [1, Theorem 2.7] N. Dunford gave a necessary and sufficient condition for an operator in U p to be spectral. The purpose of this note is to furnish a direct proof for his criterion avoiding the use of his Lemma 2.5 and Theorem 2.6 of [1].
openaire   +2 more sources

Continuous direct sums of Hilbert spaces and some of their applications.

1955
Naĭmark, M. A., Fomin, S. V.
openaire   +2 more sources

Central Limit Theorems for Weighted Sums of Dependent Random Vectors in Hilbert Spaces via the Theory of the Regular Variation

Journal of Theoretical Probability, 2021
Ta Cong Son
exaly  

On the Sum of g-Frames and Their Stability in Hilbert Spaces

Mediterranean Journal of Mathematics, 2023
Javad Baradaran
exaly  

Estimation in Reproducing Kernel Hilbert Spaces With Dependent Data

IEEE Transactions on Information Theory, 2021
Alessio Sancetta
exaly  

Some limiting behavior of the maximum of the partial sum for asymptotically negatively associated random vectors in Hilbert space

Communications in Statistics - Theory and Methods, 2023
Mi-Hwa Ko
exaly  

Hilbert spaces

2022
Ami Viselter, Shmuel Kantorovitz
exaly  

The Moore–Penrose inverses of unbounded closable operators and the direct sum of closed operators in Hilbert spaces

Linear and Multilinear Algebra
Arup Majumdar, P. Sam Johnson
openaire   +1 more source

Sums of Hilbert space frames

Journal of Mathematical Analysis and Applications, 2009
Peter Casazza
exaly