Rapid mixing of geodesic walks on manifolds with positive curvature

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Rapid Mixing of Geodesic Walks on Manifolds with Positive Curvature

We introduce a Markov chain for sampling from the uniform distribution on a Riemannian manifoldM, which we call the geodesic walk. We prove that the mixing time of this walk on any manifold with positive sectional curvature Cx(u, v) bounded both above and below by 0 < m2 ≤ Cx(u, v) ≤ M2 < ∞ is O∗ ( M2 m2 ) . In particular, this bound on the mixing time does not depend explicitly on the dimensio...

متن کامل

On the Number of Geodesic Segments Connecting Two Points on Manifolds of Non-positive Curvature

1. Introduction Let M be a compact manifold Riemannian manifold of dimension n ≥ 2, with a metric of sectional curvature bounded above by χ ≤ 0 (non-positive curvature). In this paper we prove that in the case of negative curvature (χ < 0) on such manifolds there exist pairs of points connected by at least 2n + 1 geometrically distinct geodesic segments (i.e. length minimizing). A class of poin...

متن کامل

Geodesic Flows in Manifolds of Nonpositive Curvature

I. Introduction-a quick historical survey of geodesic flows on negatively curved spaces. II. Preliminaries on Riemannian manifolds A. Riemannian metric and Riemannian volume element B. Levi Civita connection and covariant differentiation along curves C. Parallel translation of vectors along curves D. Curvature E. Geodesics and geodesic flow F. Riemannian exponential map and Jacobi vector fields...

متن کامل

On Stretch curvature of Finsler manifolds

In this paper, Finsler metrics with relatively non-negative (resp. non-positive), isotropic and constant stretch curvature are studied.  In particular, it is showed that every compact Finsler manifold with relatively non-positive (resp. non-negative) stretch curvature is a Landsberg metric. Also, it is proved that every  (α,β)-metric of non-zero constant flag curvature and non-zero relatively i...

متن کامل

Flow invariant subsets for geodesic flows of manifolds with non-positive curvature

Consider a closed, smooth manifold M of non-positive curvature. Write p:UM→M for the unit tangent bundle over M and let � > denote the subset consisting of all vectors of higher rank. This subset is closed and invariant under the geodesic flow � on UM. We define the structured dimension s-dim � > which, essentially, is the dimension of the set p(� > ) of base points of � > . The main result of ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: The Annals of Applied Probability

سال: 2018

ISSN: 1050-5164

DOI: 10.1214/17-aap1365