搜索结果: 76-90 共查到“知识库 几何学其他学科”相关记录139条 . 查询时间(4.52 秒)
Using Hook Schur Functions to Compute Matrix Cocharacters
Using Hook Schur Functions Compute Matrix Cocharacters
font style='font-size:12px;'>
2010/11/12
We use hook Schur functions to compute trace cocharacters of matrices in hooks. As an example we compute the cocharacters of 3 x 3 matrices in the one by two hook
Limits of spiked random matrices I
Limits of spiked random matrices I math
font style='font-size:12px;'>
2010/11/15
Given a large, high-dimensional sample from a spiked population, the top sample covariance eigenvalue is known to exhibit a phase transition. We show that the largest eigenvalues have asymptotic dist...
The Schrödinger-Poisson system on the sphere
The Schrö dinger-Poisson system the sphere
font style='font-size:12px;'>
2010/11/11
We study the Schr\"odinger-Poisson system on the unit sphere $\SS^2$ of $\RR^3$, modeling the quantum transport of charged particles confined on a sphere by an external potential. Our first results c...
Finding approximately rank-one submatrices with the nuclear norm and l1 norm
rank-one submatrices the nuclear norm and l1 norm
font style='font-size:12px;'>
2010/11/15
We propose a convex optimization formulation with the nuclear norm and $\ell_1$-norm to find a large approximately rank-one submatrix of a given nonnegative matrix. We develop optimality conditions f...
Short loop decompositions of surfaces and the geometry of Jacobians
Short loop decompositions the geometry of Jacobians
font style='font-size:12px;'>
2010/11/19
Given a Riemannian surface, we consider a naturally embedded graph which captures part of the topology and geometry of the surface. By studying this graph, we obtain results in three different directi...
Computation of the highest coefficients of weighted Ehrhart quasi-polynomials of rational polyhedra
coefficients weighted Ehrhart quasi-polynomials rational polyhedra
font style='font-size:12px;'>
2010/11/12
This article concerns the computational problem of counting the lattice points inside convex polytopes, when each point must be counted with a weight associated to it. We describe an efficient algori...
Five lectures on optimal transportation: Geometry, regularity and applications
optimal transportation Geometry regularity applications
font style='font-size:12px;'>
2010/11/19
In this series of lectures we introduce the Monge-Kantorovich problem of optimally transporting one distribution of mass onto another, where optimality is measured against a cost function c(x,y). Con...
Period Doubling Renormalization for Area-Preserving Maps and Mild Computer Assistance in Contraction Mapping Principle
Period Doubling Renormalization Area-Preserving Maps Mild Computer Assistance
font style='font-size:12px;'>
2010/11/29
A universal period doubling cascade analogous to the famous Feigenbaum-Coullet-Tresser period doubling has been observed in area-preserving maps of R2. Existence of the “universal” map with orbits of ...
A refined Agler decomposition and geometric applications
refined Agler decomposition geometric applications
font style='font-size:12px;'>
2010/12/13
We prove a refined Agler decomposition for bounded analytic functions on the bidisk and show how it can be used to reprove an interesting result of Guo et al. related to extending
holomorphic functio...
Drawing planar graphs of bounded degree with few slopes
planar graphs bounded degree few slopes
font style='font-size:12px;'>
2010/12/1
settle a problem of Dujmović, Eppstein, Suderman, and Wood by showing that there exists
a function f with the property that every planar graph G with maximum degree d admits a drawing
with nonc...
Calibrations in hyperkahler geometry
Calibrations hyperkahler geometry
font style='font-size:12px;'>
2010/11/30
We describe a family of calibrations arising naturally on a hyperk¨ahler manifoldM. These calibrations calibrate the holomorphic Lagrangian,holomorphic isotropic and holomorphic coisotropic subvarieti...
A gradient bound for free boundary graphs
gradient bound f free boundary graphs
font style='font-size:12px;'>
2010/12/10
We prove an analogue for a one-phase free boundary problem of the classical gradient bound for solutions to the minimal surface equation. It follows, in particular, that every energy-minimizing free b...
Representation stacks, D-branes and noncommutative geometry
Representation stacks D-branes noncommutative geometry
font style='font-size:12px;'>
2010/12/13
n this note we prove that the spec(C)-points of the representation Artin-stack [repnR/PGLn] of n-dimensional representations of an affine C-algebra R correspond to C-algebra morphisms R - An where An ...
On piecewise linear cell decompositions
piecewise linear cell decompositions
font style='font-size:12px;'>
2010/12/9
In this note, we introduce a class of cell decompositions of PL manifolds and polyhedra which are more general than triangulations yet not as general as CW complexes; we propose calling them PLCW comp...
Resonance equals reducibility for A-hypergeometric systems
toric hypergeometric Euler–Koszul homology D-module resonant
font style='font-size:12px;'>
2010/12/8
Classical Theorems of Gel’fand et al., and recent results of Beuk-ers show essentially that non-confluent A-hypergeometric systems have re-ducible monodromy representation if and only if the continuou...