Now showing items 1-18 of 18

• #### A 3-local characterization of Co2 ﻿

[OWP-2008-11] (Mathematisches Forschungsinstitut Oberwolfach, 2008-03-15)
Conway’s second largest simple group, $Co_2$, is characterized by the centralizer of an element of order 3 and certain fusion data.
• #### Formal punctured ribbons and two-dimensional local fields ﻿

[OWP-2008-01] (Mathematisches Forschungsinstitut Oberwolfach, 2008-03-05)
We investigate formal ribbons on curves. Roughly speaking, formal ribbon is a family of locally linearly compact vector spaces on a curve. We establish a one-to-one correspondence between formal ribbons on curves plus some ...
• #### Hecke duality relations of Jacobi forms ﻿

[OWP-2008-03] (Mathematisches Forschungsinstitut Oberwolfach, 2008-03-07)
In this paper we introduce a new subspace of Jacobi forms of higher degree via certain relations among Fourier coefficients. We prove that this space can also be characterized by duality properties of certain distinguished ...
• #### Hölder-Differentiability of Gibbs Distribution Functions ﻿

[OWP-2007-13] (Mathematisches Forschungsinstitut Oberwolfach, 2007-03-29)
In this paper we give non-trivial applications of the thermodynamic formalism to the theory of distribution functions of Gibbs measures (devil’s staircases) supported on limit sets of finitely generated conformal iterated ...
• #### Interpolation in Bernstein and Paley-Wiener Spaces ﻿

[OWP-2008-04] (Mathematisches Forschungsinstitut Oberwolfach, 2008-03-08)
We construct closed sets S of arbitrarily small measure with the property: given any discrete set L, every l-function on L can be interpolated by an L-function with spectrum on F. This should be contrasted against ...
• #### Non-Standard Behavior of Density Estimators for Sums of Squared Observations ﻿

[OWP-2008-07] (Mathematisches Forschungsinstitut Oberwolfach, 2008-03-11)
It has been shown recently that, under an appropriate integrability condition, densities of functions of independent and identically distributed random variables can be estimated at the parametric rate by a local U-statistic, ...
• #### Nonlinear matroid optimization and experimental design ﻿

[OWP-2007-06] (Mathematisches Forschungsinstitut Oberwolfach, 2007-03-24)
We study the problem of optimizing nonlinear objective functions over matroids presented by oracles or explicitly. Such functions can be interpreted as the balancing of multi-criteria optimization. We provide a combinatorial ...
• #### Nonlinear Optimization for Matroid Intersection and Extensions ﻿

[OWP-2008-14] (Mathematisches Forschungsinstitut Oberwolfach, 2008-03-17)
We address optimization of nonlinear functions of the form $f(W_x)$ , where $f : \mathbb{R}^d \to \mathbb{R}$ is a nonlinear function, $W$ is a $d \times n$ matrix, and feasible $x$ are in some large finite set $\mathcal{F}$ ...
• #### Nonlinear optimization over a Weighted Independence System ﻿

[OWP-2008-10] (Mathematisches Forschungsinstitut Oberwolfach, 2008-03-14)
We consider the problem of optimizing a nonlinear objective function over a weighted independence system presented by a linear-optimization oracle. We provide a polynomial-time algorithm that determines an r-best solution ...
• #### On test sets for nonlinear integer maximization ﻿

[OWP-2007-05] (Mathematisches Forschungsinstitut Oberwolfach, 2007-03-23)
A finite test set for an integer maximation problem enables us to verify whether a feasible point atains the global maximum. We establish in this paper several general results that apply to integer maximization problems ...
• #### Resolution of symplectic cyclic orbifold singularities ﻿

[OWP-2007-03] (Mathematisches Forschungsinstitut Oberwolfach, 2007-03-21)
In this paper we present a method to obtain resolutions of symplectic orbifolds arising as quotients of pre-symplectic semi-free S1-actions. This includes, in particular, all orbifolds arising from symplectic reduction of ...
• #### Secondary heat flow between confocal ellipses: an application of extended thermodynamics ﻿

[OWP-2007-11] (Mathematisches Forschungsinstitut Oberwolfach, 2007-03-27)
Much as non-Newtonian fluids exhibit secondary flows in elliptic pipes, rarefied gases exhibit secondary heat flows between elliptical cylinders. The phenomenon may be called non-Fourierian, because it is not covered by ...
• #### Self-dual polygons and self-dual curves ﻿

[OWP-2007-09] (Mathematisches Forschungsinstitut Oberwolfach, 2007-03-25)

[OWP-2009-07] (Mathematisches Forschungsinstitut Oberwolfach, 2009-03-01)
• #### Slowly oscillating wave solutions of a single species reaction-diffusion equation with delay ﻿

[OWP-2007-12] (Mathematisches Forschungsinstitut Oberwolfach, 2007-03-28)
We study positive bounded wave solutions $u(t, x) = \phi(\nu \cdot x+ct)$, $\phi(-\infty)=0$, of equation $u_t(t, x)=\delta u(t,x)−u(t,x) +g(u(t−h,x))$, $x \in \mathbb{R}^m$(*). It is supposed that Eq. (∗) has exactly two ...
• #### Upper tails for intersection local times of random walks in supercritical dimensions ﻿

[OWP-2008-02] (Mathematisches Forschungsinstitut Oberwolfach, 2008-03-06)
We determine the precise asymptotics of the logarithmic upper tail probability of the total intersection local time of $p$ independent random walks in $\mathbb{Z}^d$ under the assumption $p(d-2)>d$. Our approach allows a ...
• #### Vector bundles on degenerations of elliptic curves and Yang-Baxter equations ﻿

[OWP-2007-04] (Mathematisches Forschungsinstitut Oberwolfach, 2007-03-22)
In this paper we introduce the notion of a gemetric associative r-matrix attached to a genus one fibration with a section and irreducible fibres. It allows us to study degenerations of solutions of the classical Yang-Baxter ...
• #### Zeta functions of 3-dimensional p-adic Lie algebras ﻿

[OWP-2007-10] (Mathematisches Forschungsinstitut Oberwolfach, 2007-03-26)
We give an explicit formula for the subalgebra zeta function of a general 3-dimensional Lie algebra over the $p$-adic integers $\mathbb{Z}_p$. To this end, we associate to such a Lie algebra a ternary quadratic form over ...