Zobrazeno 1 - 10
of 272
pro vyhledávání: '"Jahn Thomas P"'
We study the Besov regularity of wavelet series on $\mathbb{R}^d$ with randomly chosen coefficients. More precisely, each coefficient is a product of a random factor and a parameterized deterministic factor (decaying with the scale $j$ and the norm o
Externí odkaz:
http://arxiv.org/abs/2411.18155
We study the universality of complex-valued neural networks with bounded widths and arbitrary depths. Under mild assumptions, we give a full description of those activation functions $\varrho:\mathbb{C}\to \mathbb{C}$ that have the property that thei
Externí odkaz:
http://arxiv.org/abs/2305.16910
The recovery of multivariate functions and estimating their integrals from finitely many samples is one of the central tasks in modern approximation theory. Marcinkiewicz--Zygmund inequalities provide answers to both the recovery and the quadrature a
Externí odkaz:
http://arxiv.org/abs/2303.00045
Using techniques developed recently in the field of compressed sensing we prove new upper bounds for general (nonlinear) sampling numbers of (quasi-)Banach smoothness spaces in $L^2$. In particular, we show that in relevant cases such as mixed and is
Externí odkaz:
http://arxiv.org/abs/2212.00445
Autor:
Hill, Gary J., Lee, Hanshin, MacQueen, Phillip J., Kelz, Andreas, Drory, Niv, Vattiat, Brian L., Good, John M., Ramsey, Jason, Kriel, Herman, Peterson, Trent, DePoy, D. L., Gebhardt, Karl, Marshall, J. L., Tuttle, Sarah E., Bauer, Svend M., Chonis, Taylor S., Fabricius, Maximilian H., Froning, Cynthia, Haeuser, Marco, Indahl, Briana L., Jahn, Thomas, Landriau, Martin, Leck, Ron, Montesano, Francesco, Prochaska, Travis, Snigula, Jan M., Zeimann, Gregory R., Bryant, Randy, Damm, George, Fowler, J. R., Janowiecki, Steven, Martin, Jerry, Mrozinski, Emily, Odewahn, Stephen, Rostopchin, Sergey, Shetrone, Matthew, Spencer, Renny, Cooper, Erin Mentuch, Armandroff, Taft, Bender, Ralf, Dalton, Gavin, Hopp, Ulrich, Komatsu, Eiichiro, Nicklas, Harald, Ramsey, Lawrence W., Roth, Martin M., Schneider, Donald P., Sneden, Chris, Steinmetz, Matthias
Publikováno v:
AJ 162 298 (2021)
The Hobby-Eberly Telescope (HET) Dark Energy Experiment (HETDEX) is undertaking a blind wide-field low-resolution spectroscopic survey of 540 square degrees of sky to identify and derive redshifts for a million Lyman-alpha emitting galaxies (LAEs) in
Externí odkaz:
http://arxiv.org/abs/2110.03843
Autor:
Jahn, Thomas, Richter, Christian
We show that, for vector spaces in which distance measurement is performed using a gauge, the existence of best coapproximations in $1$-codimensional closed linear subspaces implies in dimensions $\geq 2$ that the gauge is a norm, and in dimensions $
Externí odkaz:
http://arxiv.org/abs/2101.05594
Autor:
Jahn, Thomas, Ullrich, Tino
We address the optimal constants in the strong and the weak Stechkin inequalities, both in their discrete and continuous variants. These inequalities appear in the characterization of approximation spaces which arise from sparse approximation or have
Externí odkaz:
http://arxiv.org/abs/2006.07441
Autor:
Wagner Annemarie, Nilsson Henrik R, Schüssler Manuela D, Thorsen Michael, Bienert Gerd P, Tamás Markus J, Jahn Thomas P
Publikováno v:
BMC Biology, Vol 6, Iss 1, p 26 (2008)
Abstract Background Arsenic is a toxic and highly abundant metalloid that endangers human health through drinking water and the food chain. The most common forms of arsenic in the environment are arsenate (As(V)) and arsenite (As(III)). As(V) is a no
Externí odkaz:
https://doaj.org/article/dd50fdd467a24e8ba54bfe294f4c9bdc
Autor:
Jahn, Thomas, Winter, Martin
Motivated by the search for reduced polytopes, we consider the following question: For which polytopes exists a vertex-facet assignment, that is, a matching between vertices and non-incident facets, so that the matching covers either all vertices, or
Externí odkaz:
http://arxiv.org/abs/1812.08640
In an $n$-dimensional normed space every bounded set has a unique circumball if and only if every set of cardinality two has a unique circumball and if and only if the unit ball of the space is strictly convex. When the symmetry of the norm is droppe
Externí odkaz:
http://arxiv.org/abs/1803.10702