Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Ville Turunen"'
Publikováno v:
Journal of Fourier Analysis and Applications. 28
A time–frequency transform is a sesquilinear mapping from a suitable family of test functions to functions on the time–frequency plane. The goal is to quantify the energy present in the signal at any given time and frequency. The transform is fur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb0e84f747ec5ee216ed923ce37972fd
https://doi.org/10.1007/s00041-021-09894-3
https://doi.org/10.1007/s00041-021-09894-3
Autor:
Niklas Olson, Oliver Kallas, Nina Karasmaa, Teppo Sotanvalta, Wladimir Segercrantz, Ville Turunen, Tarjaleena Tuukkanen, Enno Lend, Birgitta Thorslund, Jaana Kullaslahti, Igor Kabashkin, Aleksandrs Grakovskis
Publikováno v:
Lecture Notes in Networks and Systems ISBN: 9783030684754
Digitalization of Transport and Logistics (T&L) is one of the key pillars of the European Digital Single Market strategy. Creation of the Single European Transport Area, from one hand, and development of Common European Education Area, from another h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cbe6a87cc2295a4e38dc69f8fa7f9a41
https://doi.org/10.1007/978-3-030-68476-1_71
https://doi.org/10.1007/978-3-030-68476-1_71
Publikováno v:
CHEMOSPHERE. 193:521-529
Sewage sludge contains significant amounts of resources, such as nutrients and organic matter. At the same time, the organic contaminants (OC) found in sewage sludge are of growing concern. Consequently, in many European countries incineration is cur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::43b42a4c223eb7b5ee9f3cdcd680df61
https://doi.org/10.1016/j.chemosphere.2017.11.052
https://doi.org/10.1016/j.chemosphere.2017.11.052
Autor:
Ville Turunen, Michael Ruzhansky
Publikováno v:
INTERNATIONAL MATHEMATICS RESEARCH NOTICES
Global quantization of pseudo-differential operators on general compact Lie groups G is introduced relying on the representation theory of the group rather than on expressions in local coordinates. A new class of globally defined symbols is introduce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30bdc5348a80b8c3cbb7648da8b47990
https://doi.org/10.1093/imrn/rns122
https://doi.org/10.1093/imrn/rns122
Autor:
Michael Ruzhansky, Ville Turunen
Publikováno v:
JOURNAL OF FUNCTIONAL ANALYSIS
In this paper the sharp Garding inequality is established on compact Lie groups. The positivity condition is expressed in the non-commutative phase space in terms of the full symbol, which is defined using the representations of the group. Applicatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d5bd0111414d049988c248a239d7294
Autor:
Ville Turunen, Michael Ruzhansky
Publikováno v:
JOURNAL OF FOURIER ANALYSIS AND APPLICATIONS
Pseudo-differential and Fourier series operators on the torus ${{\mathbb{T}}^{n}}=(\Bbb{R}/2\pi\Bbb{Z})^{n}$ are analyzed by using global representations by Fourier series instead of local representations in coordinate charts. Toroidal symbols are in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::156573b95ee33b59b1c8858ca64be11f
https://doi.org/10.1007/s00041-009-9117-6
https://doi.org/10.1007/s00041-009-9117-6
Autor:
Ville Turunen, Michael Ruzhansky
Publikováno v:
Numerical Functional Analysis and Optimization. 30:1098-1124
On the torus, pseudo-differential operators can be presented globally by Fourier series, without local coordinate charts. Periodization of partial differential equations leads to investigating the correspondence between toroidal and Euclidean symbols
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ceed94ecf4375cf7f1e37af4ac30d6b
https://doi.org/10.1080/01630560903408747
https://doi.org/10.1080/01630560903408747
Autor:
Michael Ruzhansky, Ville Turunen
This book is devoted to the broad field of Fourier analysis and its applications to several areas of mathematics, including problems in the theory of pseudo-differential operators, partial differential equations, and time-frequency analysis. It is ba
Publikováno v:
Acta Mathematica Sinica, English Series. 23:745-748
Let T be a bounded linear operator in a Banach space, with σ(T) = {1}. In 1983, Esterle–Berkani’ s conjecture was proposed for the decay of differences (I − T) Tn as follows: Either
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49cc2ea593365b054d14a9ee824c5b76
https://doi.org/10.1007/s10114-005-0765-4
https://doi.org/10.1007/s10114-005-0765-4
Autor:
Ville Turunen
Publikováno v:
Zeitschrift für Analysis und ihre Anwendungen. 19:95-108
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb7410219b218eb2998d21a780d137a8
https://doi.org/10.4171/zaa/940
https://doi.org/10.4171/zaa/940