A symplectic version of Nash C1-isometric embedding theorem

نویسندگان
چکیده

برای دانلود رایگان 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

Notes on Günther’s Method and the Local Version of the Nash Isometric Embedding Theorem

and the condition that f be an immersion is just that the vectors ∂if = ∂f/∂xi are pointwise linearly independent in U . The image of a smooth immersion can be thought of as a smooth n-dimensional submanifold of R . To understand the geometry of the image a first step is to see what happens to the length of curves in U as they are mapped by f . Let c(t) := (x(t), . . . , x(t)), a ≤ t ≤ b be a s...

متن کامل

Gunther’s Proof of Nash’s Isometric Embedding Theorem

Around 1987 a German mathematician named Matthias Gunther found a new way of obtaining the existence of isometric embeddings of a Riemannian manifold. His proof appeared in [1, 2]. His approach avoids the so-called Nash-Moser iteration scheme and, therefore, the need to prove smooth tame or Moser-type estimates for the inverse of the linearized operator. This simplifies the proof of Nash’s isom...

متن کامل

Geometric, Algebraic, and Analytic Descendants of Nash Isometric Embedding Theorems

Is there anything interesting left in isometric embeddings after the problem had been solved by John Nash? We do not venture a definite answer, but we outline the boundary of our knowledge and indicate conjectural directions one may pursue further. Our presentation is by no means comprehensive. The terrain of isometric embeddings and the fields surrounding this terrain are vast and craggy with ...

متن کامل

A Quasi-isometric Embedding Algorithm

The Whitney embedding theorem gives an upper bound on the smallest embedding dimension of a manifold. If a data set lies on a manifold, a random projection into this reduced dimension will retain the manifold structure. Here we present an algorithm to find a projection that distorts the data as little as possible.

متن کامل

A More General Version of the Costa Theorem

In accordance with the Costa theorem, the interference which is independent of the channel input and known non-causally at the transmitter, does not affect the capacity of the Gaussian channel. In some applications, the known interference depends on the input and hence has some information. In this paper, we study the channel with input dependent interference and prove a capacity theorem that n...

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: Differential Geometry and its Applications

سال: 2002

ISSN: 0926-2245

DOI: 10.1016/s0926-2245(02)00067-0