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Fractional operators as traces of operator-valued curves. / Musina, Roberta; Назаров, Александр Ильич.
в: Journal of Functional Analysis, Том 287, № 2, 110443, 01.07.2024.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Fractional operators as traces of operator-valued curves
AU - Musina, Roberta
AU - Назаров, Александр Ильич
PY - 2024/7/1
Y1 - 2024/7/1
N2 - We relate non integer powers Ls, s>0 of a given (unbounded) positive self-adjoint operator L in a real separable Hilbert space H with a certain differential operator of order 2⌈s⌉, acting on even curves R→H. This extends the results by Caffarelli–Silvestre and Stinga–Torrea regarding the characterization of fractional powers of differential operators via an extension problem.
AB - We relate non integer powers Ls, s>0 of a given (unbounded) positive self-adjoint operator L in a real separable Hilbert space H with a certain differential operator of order 2⌈s⌉, acting on even curves R→H. This extends the results by Caffarelli–Silvestre and Stinga–Torrea regarding the characterization of fractional powers of differential operators via an extension problem.
KW - Higher order fractional operators
KW - Operator-valued functions
UR - https://www.mendeley.com/catalogue/4adff206-3829-36c7-9d91-db4bb15f1708/
U2 - 10.1016/j.jfa.2024.110443
DO - 10.1016/j.jfa.2024.110443
M3 - Article
VL - 287
JO - Journal of Functional Analysis
JF - Journal of Functional Analysis
SN - 0022-1236
IS - 2
M1 - 110443
ER -
ID: 126951602