Browsing by Title
Now showing items 890909 of 2009

1226  Learning Theory and Approximation
[OWR201231] (2012)  (24 Jun  30 Jun 2012)Learning theory studies data structures from samples and aims at understanding unknown function relations behind them. This leads to interesting theoretical problems which can be often attacked with methods from Approximation ... 
0827b  Learning Theory and Approximation
[OWR200830] (2008)  (29 Jun  05 Jul 2008)Mathematical analysis of learning algorithms consists of bias measured by various kinds of approximation errors and variance investigated by probability and statistical analysis. This workshop has dealt with new developments ... 
Lectures on Algebraic Statistics
[OWS39] (Birkhäuser Basel, 2009)How does an algebraic geometer studying secant varieties further the understanding of hypothesis tests in statistics? Why would a statistician working on factor analysis raise open problems about determinantal varieties? ... 
Lectures on HermitianEinstein metrics for stable bundles and KählerEinstein metrics
[OWS08] (Birkhäuser Basel, 1987)These notes are based on the lectures I delivered at the German Mathematical Society Seminar in Schloss Michkeln in DUsseldorf in June. 1986 on HermitianEinstein metrics for stable bundles and KahlerEinstein metrics. The ... 
Lectures on spaces of nonpositive curvature : with an appendix by Misha Brin Ergodicity of geodesic flows
[OWS25] (Birkhäuser Basel, 1995)Singular spaces with upper curvature bounds and, in particular, spaces of nonpositive curvature, have been of interest in many fields, including geometric (and combinatorial) group theory, topology, dynamical systems and ... 
Lectures on vanishing theorems
[OWS20] (Birkhäuser Basel, 1992)Introduction M. Kodaira's vanishing theorem, saying that the inverse of an ample invert ible sheaf on a projective complex manifold X has no cohomology below the dimension of X and its generalization, due to Y. Akizuki ... 
2040a  Lefschetz Properties in Algebra, Geometry and Combinatorics (hybrid meeting)
[OWR202031] (2020)  (27 Sep  03 Oct 2020)The themes of the workshop are the Weak Lefschetz Property  WLP  and the Strong Lefschetz Property  SLP. The name of these properties, referring to Artinian algebras, is motivated by the Lefschetz theory for projective ... 
Legendrian Knots in Lens Spaces
[OWP201101] (Mathematisches Forschungsinstitut Oberwolfach, 2011)In this note, we first classify all topological torus knots lying on the Heegaard torus in Lens spaces, and then we classify Legendrian representatives of torus knots. We show that all Legendrian torus knots in universally ... 
Legendrian Lens Space Surgeries
[OWP201610] (Mathematisches Forschungsinstitut Oberwolfach, 20160617)We show that every tight contact structure on any of the lens spaces $L(ns^2  s + 1,s^2)$ with $n\geq 2, s \geq 1$, can be obtained by a single Legendrian surgery along a suitable Legendrian realisation of the negative ... 
Legendrian rational unknots in lens spaces
[OWP201306] (Mathematisches Forschungsinstitut Oberwolfach, 20130314)We classify Legendrian rational unknots with tight complements in the lens spaces $L(p,1)$ up to coarse equivalence. As an example of the general case, this classification is also worked out for $L(5, 2)$. The knots are ... 
Lifting Spectral Triples to Noncommutative Principal Bundles
[OWP202102] (Mathematisches Forschungsinstitut Oberwolfach, 20210111)Given a free action of a compact Lie group $G$ on a unital C*algebra $\mathcal{A}$ and a spectral triple on the corresponding fixed point algebra $\mathcal{A}^G$, we present a systematic and indepth construction of ... 
Limits of graph sequences
[SNAP2019010EN] (Mathematisches Forschungsinstitut Oberwolfach, 20190904)Graphs are simple mathematical structures used to model a wide variety of reallife objects. With the rise of computers, the size of the graphs used for these models has grown enormously. The need to efficiently represent ... 
0933  Linear and Nonlinear Eigenproblems for PDEs
[OWR200937] (2009)  (09 Aug  15 Aug 2009)The workshop discussed the numerical solution of linear and nonlinear eigenvalue problems for partial diﬀerential equations. It included the theoretical analysis the development of new (adaptive) methods, the iterative ... 
Linear Syzygies, Hyperbolic Coxeter Groups and Regularity
[OWP201715] (Mathematisches Forschungsinstitut Oberwolfach, 20170524)We build a new bridge between geometric group theory and commutative algebra by showing that the virtual cohomological dimension of a Coxeter group is essentially the regularity of the Stanley–Reisner ring of its nerve. ... 
Linking and Closed Orbits
[OWP201315] (Mathematisches Forschungsinstitut Oberwolfach, 20130610)We show that the Lagrangian of classical mechanics on a Riemannian manifold of bounded geometry carries a periodic solution of motion with prescribed energy, provided the potential satis es an asymptotic growth ... 
Local and Global Canonical Forms for DifferentialAlgebraic Equations with Symmetries
[OWP202205] (Mathematisches Forschungsinstitut Oberwolfach, 20220221)Linear timevarying differentialalgebraic equations with symmetries are studied. The structures that we address are selfadjoint and skewadjoint systems. Local and global canonical forms under congruence are presented ... 
Local asymptotics for the area of random walk excursions
[OWP201319] (Mathematisches Forschungsinstitut Oberwolfach, 20130905)We prove a local limit theorem for the area of the positive exursion of random walks with zero mean and finite variance. Our main result complements previous work of Caravenna and Chaumont, Sohier, as well as ... 
Local Existence and Conditional Regularity for the NavierStokesFourier System Driven by Inhomogeneous Boundary Conditions
[OWP202410] (Mathematisches Forschungsinstitut Oberwolfach, 20240925)We consider the Navier–Stokes–Fourier system with general inhomogeneous Dirichlet–Neumann boundary conditions. We propose a new approach to the local wellposedness problem based on conditional regularity estimates. By ... 
Localized Endomorphisms of Graph Algebras
[OWP201104] (Mathematisches Forschungsinstitut Oberwolfach, 2011057)Endomorphisms of graph $C^*$algebras are investigated. A combinatorial approach to analysis of permutative endomorphisms is developed. Then invertibility criteria for localized endomorphisms are given. Furthermore, ... 
Locally Compact Abelian pGroups Revisited
[OWP201706] (Mathematisches Forschungsinstitut Oberwolfach, 20170303)Even though the structure of locally compact abelian groups is generally considered to be rather thoroughly known through a wealth of publications, one keeps encountering corners that are not elucidated in uptodate ...