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This note introduces a new analytic approach to the solution of a very general class of finite-horizon optimal control problems formulated for discrete-time systems. This approach provides a parametric expression for the optimal control…

最优化与控制 · 数学 2012-09-03 Augusto Ferrante , Lorenzo Ntogramatzidis

We revisit the well-established regularity estimates on harmonic maps on surfaces to question their independence with respect to the dimension of the target manifold. We are mainly interested in harmonic maps into target ellipsoids, that we…

偏微分方程分析 · 数学 2025-08-15 Romain Petrides

In this paper we give concrete estimations for the pseudo symplectic capacities of toric manifolds in combinatorial data. Some examples are given to show that our estimates can compute their pseudo symplectic capacities. As applications we…

辛几何 · 数学 2007-05-23 Guangcun Lu

Quantification of the number of variables needed to locally explain complex data is often the first step to better understanding it. Existing techniques from intrinsic dimension estimation leverage statistical models to glean this…

机器学习 · 计算机科学 2023-12-13 Eric Yeats , Cameron Darwin , Frank Liu , Hai Li

We find upper bounds for the essential dimension of various moduli stacks of $\sln$-bundles over a curve. When $n$ is a prime power, our calculation computes the essential dimension of the stack of stable bundles exactly and the essential…

代数几何 · 数学 2009-08-04 Ajneet Dhillon , Nicole Lemire

P. Buser and P. Sarnak showed in 1994 that the maximum, over the moduli space of Riemann surfaces of genus s, of the least conformal length of a nonseparating loop, is logarithmic in s. We present an application of (polynomially) dense…

微分几何 · 数学 2007-05-23 Mikhail G. Katz

In this article, we derive the asymptotic expansion, up to an arbitrary order in theory, for the solution of a two-dimensional elliptic equation with strongly anisotropic diffusion coefficients along different directions, subject to the…

偏微分方程分析 · 数学 2017-01-13 Ling Lin , Xiang Zhou

Sampling-based motion planners have proven to be efficient solutions to a variety of high-dimensional, geometrically complex motion planning problems with applications in several domains. The traditional view of these approaches is that…

机器人学 · 计算机科学 2014-04-09 Andrew Dobson , George V. Moustakides , Kostas E. Bekris

We investigate the interaction between systolic geometry and positive scalar curvature through spinorial methods. Our main theorem establishes an upper bound for the two-dimensional stable systole on certain high-dimensional manifolds with…

微分几何 · 数学 2025-09-30 Shunichiro Orikasa

In this paper we provide asymptotic upper bounds on the complexity in two (closely related) situations. We confirm for the total doubling coverings and not only for the chains the expected bounds of the form $$ \kappa({\mathcal U}) \le…

经典分析与常微分方程 · 数学 2019-03-12 Raf Cluckers , Omer Friedland , Yosef Yomdin

We derive optimal estimates in stochastic homogenization of linear elliptic equations in divergence form in dimensions $d\ge 2$. In previous works we studied the model problem of a discrete elliptic equation on $\mathbb{Z}^d$. Under the…

偏微分方程分析 · 数学 2014-09-03 Antoine Gloria , Felix Otto

Potential theory on the complement of a subset of the real axis attracts a lot of attention both in function theory and applied sciences. The paper discusses one aspect of the theory - the logarithmic capacity of closed subsets of the real…

复变函数 · 数学 2009-05-21 V. N. Dubinin , D. Karp

In this paper, we prove the propagation of uniform upper bounds for the spatially homogeneous relativistic Boltzmann equation. These $L^\infty$ bounds have been known to be a challenging open problem in relativistic kinetic theory. To…

偏微分方程分析 · 数学 2021-03-18 Jin Woo Jang , Robert M. Strain , Seok-Bae Yun

Le th\'eor\`eme principal de cet article est un r\'esultat de transversalit\'e quantitative relatif \`a une sous-vari\'et\'e. The main theorem of this paper is a result of estimated transversality with respect to a given submanifold.

辛几何 · 数学 2021-06-03 Jean-Paul Mohsen

We prove that on any symplectic manifold whose symplectic form represents a rational cohomology class there exists a sequence of compatible almost complex structures whose Nijenhuis energy (the $L^2$-norm of the Nijenhuis tensor) tends to…

辛几何 · 数学 2012-08-03 Jonathan David Evans

In this article we obtain uniform effective upper bounds for the projective dimension and the Castelnuovo-Mumford regularity of homogeneous ideals inside a standard graded polynomial ring $S$ over a field. Such bounds are independent of the…

交换代数 · 数学 2026-05-14 Giulio Caviglia , Alessandro De Stefani

We derive nearly tight and non-asymptotic convergence bounds for solutions of entropic semi-discrete optimal transport. These bounds quantify the stability of the dual solutions of the regularized problem (sometimes called Sinkhorn…

人工智能 · 计算机科学 2022-05-05 Alex Delalande

The manifold hypothesis says that natural high-dimensional data lie on or around a low-dimensional manifold. The recent success of statistical and learning-based methods in very high dimensions empirically supports this hypothesis,…

机器学习 · 计算机科学 2025-05-06 Hong Ye Tan , Subhadip Mukherjee , Junqi Tang , Carola-Bibiane Schönlieb

We study asymptotic estimates of the dimension of cohomology on possibly non-compact complex manifolds for line bundles endowed with Hermitian metrics with algebraic singularities. We give a unified approach to establishing singular…

复变函数 · 数学 2023-11-28 Dan Coman , George Marinescu , Huan Wang

This short and fairly informal note is an attempt to explain how methods of homological algebra may be brought to bear on problems in symplectic geometry. We do this by looking at a familiar sample question, which is that of the topology of…

辛几何 · 数学 2016-09-07 Paul Seidel