搜索结果: 1-10 共查到“偏微分方程 s-closed”相关记录10条 . 查询时间(0.103 秒)
Alternative construction of the closed form of the Green's function for the wavized Maxwell fish-eye problem
Maxwell’s fish-eye problem Green’s function scalar wave optics gradient-index (GRIN) optics
2011/8/31
Abstract: In the recent paper [J.\ Phys.\ A 44 (2011) 065203], we have arrived at the closed-form expression for the Green's function for the partial differential operator describing propagation of a ...
Unsteady mixed flows in non uniform closed water pipes: a Full Kinetic Appraoch
Mixed flows in closed water pipes drying and flooding flows kinetic interpretation of conservation laws
2011/8/26
Abstract: We recall the \PFS} model constructed for the modeling of unsteady mixed flows in closed water pipes where transition points between the free surface and pressurized flow are treated as a fr...
Unique Solutions to Hartree-Fock Equations for Closed Shell Atoms
Unique Solutions Hartree-Fock Equations Closed Shell Atoms
2011/2/25
In this paper we study the problem of uniqueness of solutions to the Hartree and Hartree-Fock equations of atoms. We show, for example, that the Hartree-Fock ground state of a closed shell atom is uni...
Counting Essential Surfaces in a Closed Hyperbolic 3-Manifold
Counting Essential Surfaces Closed Hyperbolic 3-Manifold
2011/1/21
Let M3 be a closed hyperbolic three manifold. We show that the number of genus g surface subgroups of 1(M3) grows like g 2g.
Contracting Convex Immersed Closed Plane Curves with Slow Speed of Curvature
Convex Immersed Closed Plane Curves Slow Speed of Curvature
2010/12/13
We study the contraction of a convex immersed plane curve with speed 1 k , where ∈ (0, 1] is a constant and show that, if the blow-up rate of the curvature is of type one, it will converge to a homo...
Algebraic characterization of simple closed curves via Turaev's cobracket
surfaces conjugacy classes Lie algebras intersection number
2010/12/6
The vector space V generated by the conjugacy classes in the funda-mental group of an orientable surface has a natural Lie cobracket : V −→ V × V.For negatively curved surfaces, can be compu...
Simple closed curves, word length, and nilpotent quotients of free groups
ISimple closed curves word length nilpotent quotients of free groups
2010/11/29
We consider the fundamental group p of a surface of finite type equipped with the infinite generating set consisting of all simple closed curves. We show that every nilpotent quotient of p has finite ...
On Some Characterizations of Ruled Surface of a Closed Spacelike Curve with Timelike Binormal in Dual Lorentzian Space
Spacelike dual curve ruled surface Lorentzian space dual num-bers
2010/12/6
In this paper, we investigate the relations between the pitch, the angle of pitch and drall of parallel ruled surface of a closed spacelike curve with timelike binormal in dual Lorentzian space.
Closed magnetic geodesics on closed hyperbolic Riemann surfaces
prescribed geodesic curvature periodic orbits in magnetic fields closed magnetic geodesics
2010/12/1
We prove the existence of Alexandrov embedded closed magnetic geodesics on closed hyperbolic surfaces. Closed magnetic geodesics correspond to closed curves with prescribed geodesic curvature.
On Some Characterizations of Ruled Surface of a Closed Spacelike Curve with a Spacelike Binormal in Dual Lorentzian Space
Spacelike dual curve ruled surface Lorentzian space dual numbers
2010/12/8
In this paper, we investigate the relations between the pitch, the angle of pitch and drall of parallel ruled surface of a closed spacelike curve with a spacelike binormal in dual Lorentzian space.