Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Thorsten Raasch"'
We are concerned with the eigenstructure of supersymmetric tensors. Like in the matrix case, normalized tensor eigenvectors are fixed points of the tensor power iteration map. However, unless the given tensor is orthogonally decomposable, some of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::041d674cde2fbbdd1ff02e309d75bc02
http://arxiv.org/abs/2203.01865
http://arxiv.org/abs/2203.01865
Publikováno v:
IMA Journal of Numerical Analysis. 41:2608-2638
This paper is concerned with new discretization methods for the numerical treatment of elliptic partial differential equations. We derive an adaptive approximation scheme that is based on frames of quarkonial type, which can be interpreted as a wavel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b86e2444d6e85054bb664f7f4dd038b
https://doi.org/10.1093/imanum/draa030
https://doi.org/10.1093/imanum/draa030
We show that B-spline quarks and the associated quarklets fit into the theory of biorthogonal multiwavelets. Quark vectors are used to define sequences of subspaces $ V_{p,j} $ of $ L_{2}(\mathbb{R}) $ which fulfill almost all conditions of a multire
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b60b1f519b9710f321c5a8cd9d9c7018
Publikováno v:
Calcolo. 54:823-855
In the spirit of subatomic or quarkonial decomposition of function spaces (Triebel in Fractals and spectra related to fourier analysis and function spaces. Birkhauser, Boston, 1997), we construct compactly supported, piecewise polynomial functions wh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93c4420c752914f14e3cfc36b1b93fc4
https://doi.org/10.1007/s10092-016-0210-3
https://doi.org/10.1007/s10092-016-0210-3
Publikováno v:
The European Physical Journal Special Topics. 225:1527-1549
We discuss in detail a recently proposed hybrid particle-continuum scheme for complex fluids and evaluate it at the example of a confined homopolymer solution in slit geometry. The hybrid scheme treats polymer chains near the impenetrable walls as pa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::40595221e4ca923707e20d38325aa118
https://doi.org/10.1140/epjst/e2016-60096-8
https://doi.org/10.1140/epjst/e2016-60096-8
Publikováno v:
Journal of Complexity. 59:101470
This paper is concerned with approximation properties of polynomially enriched wavelet systems, so-called quarklet frames. We show that certain model singularities that arise in elliptic boundary value problems on polygonal domains can be approximate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc2f43fa5ede39adf51a0acc24828060
https://doi.org/10.1016/j.jco.2020.101470
https://doi.org/10.1016/j.jco.2020.101470
Publikováno v:
Journal of Inverse and Ill-posed Problems. 23:393-414
This paper is concerned with the development of numerical schemes for the minimization of functionals involving sparsity constraints and nonconvex fidelity terms. These functionals appear in a natural way in the context of Tikhonov regularization of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2503ffebb659ca4086a438cdfe35dfe1
https://doi.org/10.1515/jiip-2014-0031
https://doi.org/10.1515/jiip-2014-0031
Autor:
Stephan Dahlke, Stefan Kinzel, René L. Schilling, Klaus Ritter, Nicolas Döhring, Thorsten Raasch, Felix Lindner, Ulrich Friedrich, Petru A. Cioica
Publikováno v:
Foundations of Computational Mathematics. 14:863-912
This paper is concerned with the convergence analysis of the horizontal method of lines for evolution equations of the parabolic type. Following a semidiscretization in time by $$S$$ S -stage one-step methods, the resulting elliptic stage equations p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4121d5ef8f93a4073377bec62fc8b3a
https://doi.org/10.1007/s10208-013-9183-7
https://doi.org/10.1007/s10208-013-9183-7
Publikováno v:
Mathematische Nachrichten. 286:600-613
We discuss the connection between the theory of quarkonial decompositions for function spaces developed by Hans Triebel, and the multilevel partition of unity method. The central result is an alternative approach to the stability of quarkonial decomp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c844018143cd3d2e2ac345983820f9c
https://doi.org/10.1002/mana.201100246
https://doi.org/10.1002/mana.201100246