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Higher-order regularity for a structurally damped plate equation on rough domains. [PDF]
Math AnnDenk R, Roodenburg FB.
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Vibrationally Induced Resonances in Lasing. [PDF]
J Phys Chem LettMüller K, Luoma K, Schäfer C.
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Quantum computation via local control theory: Direct sum vs. direct product Hilbert spaces
Chemical Physics, 2006Abstract The central objective in any quantum computation is the creation of a desired unitary transformation; the mapping that this unitary transformation produces between the input and output states is identified with the computation. In [S.E. Sklarz, D.J.
David Tannor
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On spectrality criterion for operators on a direct sum of Hilbert spaces
Israel Journal of Mathematics, 1965In [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].
S R Foguel
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Gaps between some spectral characteristics of direct sum of Hilbert space operators
Operators and Matrices, 2022Summary: In the present study, we investigate how the gaps between some spectral characteristics (operator norm, upper and lower bounds of spectrum and numerical range) of finite direct sum of Hilbert space operators are related to the same spectral characteristics of the coordinate operators.
Ismailov, Zameddin I. +1 more
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A study of Frames and Bases for Operators in Direct Sums of Complex Hilbert Spaces
Acta Scientiarum Mathematicarumexaly +2 more sources