On Decidability of Hyperbolicity

نویسندگان

چکیده

We prove that a wide range of coloring problems for graphs on surfaces can be resolved by inspecting finite number configurations.

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

Semi-hyperbolicity and Hyperbolicity

We prove that for C1-diffeomorfisms semi-hyperbolicity of an invariant set implies its hyperbolicity. Moreover, we provide some exact estimations of hyperbolicity constants by semi-hyperbolicity ones, which can be useful in strict numerical computations.

متن کامل

Notes on Hyperbolicity Cones

minimize cx such that Ax = b and x ∈ Λ+, where c ∈ R, Ax = b is a system of linear equations and Λ+ is the closure of a so called hyperbolicity cone. Hyperbolic programming generalizes semidefinite programming, but it is not known to what extent since it is not known how general the hyperbolicity cones are. The rich algebraic structure of hyperbolicity cones makes hyperbolic programming an inte...

متن کامل

Pointwise Hyperbolicity Implies Uniform Hyperbolicity

We provide a general mechanism for obtaining uniform information from pointwise data. A sample result is that if a diffeomorphism of a compact Riemannian manifold has pointwise expanding and contracting continuous invariant cone families, then the diffeomorphism is an Anosov diffeomorphism, i.e., the entire manifold is uniformly hyperbolic.

متن کامل

On the Decidability of Process

We present general results for showing process equivalences applied to the nite control fragment of the -calculus decidable. Firstly a Finite Reachability Theorem states that up to nite name spaces and up to a static normalisation procedure, the set of reachable agent expressions is nite. Secondly a Boundedness Lemma shows that no potential computations are missed when name spaces are chosen la...

متن کامل

On Decidability of Persistence Notions

Persistence is a widely investigated fundamental property of concurrent systems, which was extended in many ways. We propose a unified characterisation of several notions considered in the literature. The main result of the paper is a detailed description of a general and extendable framework that allows to state decision problems for different persistence notions (well known as well as newly f...

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: Combinatorica

سال: 2022

ISSN: ['0209-9683', '1439-6912']

DOI: https://doi.org/10.1007/s00493-022-4891-8