搜索结果: 136-150 共查到“理学 symmetric”相关记录276条 . 查询时间(0.062 秒)
The representation dimension of Hecke algebras and symmetric groups
Hecke algebras symmetric groups
font style='font-size:12px;'>
2010/11/22
We establish a lower bound for the representation dimension of all the classical Hecke algebras of types A, B and D. For all the type A algebras, and most of the algebras of types B and D, we also es...
On positive definite preserving linear transformations of rank $r$ on real symmetric matrices
positive definite linear transformations
font style='font-size:12px;'>
2010/11/22
We study on what conditions on $B_k,$ \ a linear transformation of rank $r$ \label{form} T(A)=\sum_{k=1}^r\tr(AB_k)U_k where $U_k,\ k=1,2,..., r$ are linear independent and all positive definite; is p...
Plane-symmetric spacetimes with positive cosmological constant. The case of stiff fluids
Plane-symmetric spacetimes positive cosmological constant stiff fluids
font style='font-size:12px;'>
2010/12/20
We consider plane-symmetric spacetimes satisfying Einstein’s field equations with positive cosmological constant, when the matter is a fluid whose pressure is equal to its mass-energy density (i.e. a ...
Analytic properties of fractional Schrödinger semigroups and Gibbs measures for symmetric stable processes
Schrö dinger semigroups Gibbs measures symmetric stable processes
font style='font-size:12px;'>
2010/11/18
We establish a Feynman-Kac-type formula to define fractional Schr\"odinger operators for fractional Kato-decomposable potentials as self-adjoint operators. In this functional integral representation ...
Boundary value problems on Riemannian Symmetric Spaces of the noncompact Type
Boundary value problems Riemannian the noncompact Type
font style='font-size:12px;'>
2010/11/11
We characterize the image of the Poisson transform on each boundary component of a Riemannian symmetric space of the noncompact type by a system of differential equations. The system corresponds to a...
Symmetric Criticality in Classical Field Theory
Symmetric Criticality Classical Field Theory
font style='font-size:12px;'>
2010/12/21
This is a brief overview of work done by Ian Anderson, Mark Fels, and myself on symmetry reduction of Lagrangians and Euler-Lagrange equations, a subject closely related to Palais’ Principle of Symmet...
Homotopes of Symmetric Spaces II. Structure Variety and Classification
Homotopes of Symmetric Spaces II Structure
font style='font-size:12px;'>
2010/11/19
We classify homotopes of classical symmetric spaces (studied in Part I of this work). Our classification uses the fibered structure of homotopes: they are fibered as symmetric spaces, with flat fibers...
Existence of Spherically Symmetric Initial Data with Zero Energy, Unit Mass, and Virial less than - 1/2 for the Relativistic Vlasov-Poisson Equation with Attractive Coupling
Zero Energy Unit Mass
font style='font-size:12px;'>
2010/11/19
In a recent paper, Kiessling and Tahvildar-Zadeh proved that any spherically symmetric classical solution of the attractive relativistic Vlasov-Poisson equation launched by sufficiently regular initi...
Modular branching rules for projective representations of symmetric groups and lowering operators for the supergroup Q(n)
projective representations symmetric groups lowering operators the supergroup Q(n)
font style='font-size:12px;'>
2010/11/9
There are two approaches to projective representation theory of symmetric and alternating groups, which are powerful enough to work for modular representations. One is based on Sergeev duality, which...
Associative superalgebras with homogeneous symmetric structures
Associative superalgebras homogeneous symmetric structures
font style='font-size:12px;'>
2010/11/19
A homogeneous symmetric structure on an associative superalgebra A is a non-degenerate, supersymmetric, homogeneous (i.e. even or odd) and associative bilinear form on A. In this paper, we show that ...
Radially symmetric minimizers for a $p$-Ginzburg Landau type energy in $\R^2$
Radially symmetric minimizers math
font style='font-size:12px;'>
2010/11/17
We consider the minimization of a p-Ginzburg-Landau energy functional over the class of radially symmetric functions of degree one. We prove the existence of a unique minimizer in this class, and sho...
Some peculiarities of motion of neutral and charged test particles in the field of a spherically symmetric charged object in General Relativity
Motions classification Mass potential Stability conditions
font style='font-size:12px;'>
2010/12/20
We propose the method of investigation of radial motions for charged and neutral test particles in the Reissner-Nordstr¨om field by means of mass potential. In this context we analyze special features...
On the Stable Spherically-Symmetric Charged Dust Configurations in General Relativity
Stable Spherically-Symmetric Charged Dust Configurations General Relativity
font style='font-size:12px;'>
2010/12/20
The radial motion of a self-graviting charged dust and stability condition of the static
charged dust spheres are considered. The stability is possible for the bound states of the weakly charged laye...
Two-symmetric Lorentzian manifolds
Two-symmetric Lorentzian manifolds math
font style='font-size:12px;'>
2010/11/22
The local form of all two-symmetric Lorentzian manifolds is found. To do this, the methods of the theory of the holonomy groups is used.
On the Uniqueness of Solutions of the Schrödinger Equation on Riemannian Symmetric Spaces of the Noncompact Type
the Schrö dinger Equation Riemannian Symmetric Spaces the Noncompact Type
font style='font-size:12px;'>
2010/11/11
Let X be a Riemannian symmetric space of the noncompact type. We prove that the solution of the time-dependent Schr\"odinger equation on X with square integrable initial condition f is identically ze...