The aim of the present paper is to investigate new types of recurrence in Finsler geometry, namely, hyper-generalized recurrence and generalized conharmonic recurrence. The properties of such recurrences and their relations to other Finsler recurrences are studied.
Recently, we have studied the Finsler space with h-Matsumoto change and found Cartan connection for the transformed space [2]. In this paper, we have discussed certain geometrical properties of the hypersurface of a Finsler space for the h-Matsumoto change.
In this paper, we study the relationship between isoparametric hypersurfaces and hypersurfaces with constant principal curvatures in Finsler spaces. We give some examples of isoparametric hypersurfaces with (non)constant principal curvatures on Randers manifolds with nonconstant flag curvatures. Furthermore, we construct an example of a conformally flat Randers manifold which admits a family of nonisoparametric hyperplanes with constant principal curvatures.
In this paper, we introduce isoparametric functions and isoparametric hypersurfaces in conic Finsler spaces. We find that in a conic Minkowski space, besides the conic Minkowski hyperplanes, conic Minkowski hyperspheres and conic Minkowski cylinders, which are all isoparametric hypersurfaces, there are probably other isoparametric hypersurfaces, such as helicoids. Moreover, we give a complete classification of isoparametric hypersurfaces in kropina spaces with constant flag curvature.
Using a navigation process with the datum $(F,V)$, in which $F$ is a Finsler metric and the smooth tangent vector field $V$ satisfies $F(-V(x))>1$ everywhere, a Lorentz Finsler metric $\tilde{F}$ can be induced. Isoparametric functions and isoparametric hypersurfaces with or without involving a smooth measure can be defined for $\tilde{F}$. When the vector field $V$ in the navigation datum is homothetic, we prove the local correspondences between isoparametric functions and isoparametric hypersurfaces before and after this navigation process. Using these correspondences, we provide some exampl…
We consider a natural mechanical system on a Finsler manifold and study its \emph{curvature} using the intrinsic Jacobi equations (called \emph{Jacobi curves}) along the extremals of the least action of the system. The curvature for such a system is expressed in terms of the Riemann curvature and the Chern curvature (involving the gradient of the potential) of the Finsler manifold and the Hessian of the potential w.r.t. a Riemannian metric induced from the Finslerian metric. As an application, we give sufficient conditions for the Hamiltonian flows of the least action to be hyperbolic and show…
We show how some of well-known recurrent operators such as recurrent curvature operator, recurrent Ricci operator, recurrent Jacobi operator, recurrent shape and Weyl operators have the significant role for biharmonic hypersurfaces to be minimal in the Euclidean space.
Some remarks on Finsler manifolds with constant flag curvature
本文是对具有常正旗曲率的Finsler流形几何的四个松散相关的评论的阐述。<p>第一个注记是在这样一个流形的测地线空间上存在一个典型的Kahler结构。<p>第二点是,有一种自然的方法可以从复射影n-空间中适当一般位置的超曲面中构造一个(不一定是完备的)具有常正旗曲率的芬斯勒n-流形。<p>第三个注记是2-球面上常曲率的Finsler度量可用其测地线空间上的黎曼度量和1-形式来描述。特别地,这允许使用2-球面上正高斯曲率的任何(黎曼)Zoll度量来构造2-球面上常正曲率的全局Finsler度量。<p>第四点是关于维数n+1>2中具有常正旗曲率的(局部)Finsler度量空间的一般性。证明了这样的度量依赖于n(n+1)个n+1元的任意函数,并且这样的度量自然地对应于2n-流形上的某些无挠S^1 x GL(n,R)-结构.作为一个副产品,它被发现,这些群体确实出现的holonomy的挠自由仿射联络在2n维,迄今未被怀疑的现象。
On the existence of a generalized class of recurrent manifolds
本文研究了一类广义回归流形,即超广义回归流形的真存在性。我们已经建立了递归流形的各种广义概念的正确存在性。为此,我们提出了一个度量,并计算了它的曲率性质,最后得到了一类新的半黎曼流形的存在性,它们是非递归的,但却是超广义递归的、Ricci递归的、共调和递归的、具有递归曲率2-形式的流形和半对称的;非爱因斯坦但Ricci简单;不满足$P\cdot P =0$但满足条件$P \cdot P = -\frac{1}{3}Q(S, P)$,$P$是投影曲率张量。