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In this short note, we prove that the restriction conjecture for the (hyperbolic) paraboloid in $\mathbb{R}^d$ implies the $l^p$-decoupling theorem for the (hyperbolic) paraboloid in $\mathbb{R}^{2d-1}$. In particular, this gives a simple…

Classical Analysis and ODEs · Mathematics 2025-10-08 Changkeun Oh

We give a method for computing upper and lower bounds for the volume of a non-obtuse hyperbolic polyhedron in terms of the combinatorics of the 1-skeleton. We introduce an algorithm that detects the geometric decomposition of good…

Geometric Topology · Mathematics 2012-11-22 Christopher K. Atkinson

We construct an explicit lower bound for the volume of a complex hyperbolic orbifold that depends only on dimension.

Geometric Topology · Mathematics 2013-11-28 Ilesanmi Adeboye , Guofang Wei

In this paper we obtain new upper bounds on volumes of right-angled polyhedra in hyperbolic space $\mathbb{H}^3$ in three different cases: for ideal polyhedra with all vertices on the ideal hyperbolic boundary, for compact polytopes with…

Geometric Topology · Mathematics 2022-01-06 Stepan Alexandrov , Nikolay Bogachev , Andrei Egorov , Andrei Vesnin

We revisit the Ou-Wang's approach to the cone restriction problem via polynomial partitioning. By recasting their inductive scheme as a recursive algorithm and incorporating the nested polynomial Wolff axioms, we obtain improved bounds for…

Classical Analysis and ODEs · Mathematics 2026-03-10 Xiangyu Wang

In connection with the restriction problem in $\mathbb R^n$ for hypersurfaces including the sphere and paraboloid, the bilinear (adjoint) restriction estimates have been extensively studied. However, not much is known about such estimates…

Classical Analysis and ODEs · Mathematics 2017-10-23 Jong-Guk Bak , Jungjin Lee , Sanghyuk Lee

Using a bilinear restriction theorem of Lee and a bilinear-to-linear argument of Stovall, we obtain the conjectured range of Fourier restriction estimates for a conical hypersurface in $\mathbb{R}^4$ with hyperbolic cross sections.

Classical Analysis and ODEs · Mathematics 2020-05-28 Benjamin Bruce

We conjecture that for every dimension n not equal 3 there exists a noncompact hyperbolic n-manifold whose volume is smaller than the volume of any compact hyperbolic n-manifold. For dimensions n at most 4 and n=6 this conjecture follows…

Metric Geometry · Mathematics 2015-04-09 Mikhail Belolipetsky , Vincent Emery

We consider hyperbolic manifolds with boundary, which admit an ideal triangulation with n ideal triangles and one edge. We prove that the number of these manifolds is $\exp(n\ln(n)+O(n))$.

Combinatorics · Mathematics 2015-06-30 A. Magazinov , I. Shnurnikov

The existence of hyperbolic orbits is proved for a class of restricted three-body problems with a fixed energy by taking limit for a sequence of periodic solutions which are obtained by variational methods.

Mathematical Physics · Physics 2012-08-06 Donglun Wu , Shiqing Zhang

We consider constrained partial differential equations of hyperbolic type with a small parameter $\varepsilon>0$, which turn parabolic in the limit case, i.e., for $\varepsilon=0$. The well-posedness of the resulting systems is discussed…

Analysis of PDEs · Mathematics 2022-02-15 Robert Altmann , Christoph Zimmer

In this note, we continue our research on Fourier restriction for hyperbolic surfaces, by studying local perturbations of the hyperbolic paraboloid $z=xy,$ which are of the form $z=xy+h(y),$ where $h(y)$ is a smooth function of finite type.…

Classical Analysis and ODEs · Mathematics 2019-07-24 Stefan Buschenhenke , Detlef Müller , Ana Vargas

We utilize ideal bipyramids to obtain new upper bounds on volume for hyperbolic link complements in terms of the combinatorics of their projections.

Geometric Topology · Mathematics 2015-11-10 Colin Adams

H\"older estimates for second derivatives are proved for solutions of fully nonlinear parabolic equations in two space variables. Related techniques extend the regularity theory for fully nonlinear parabolic equations in higher dimensions.

Analysis of PDEs · Mathematics 2007-05-23 Ben Andrews

We prove a class of modified paraboloid restriction estimates with a loss of angular derivatives for the full set of paraboloid restriction conjecture indices. This result generalizes the paraboloid restriction estimate in radial case from…

Analysis of PDEs · Mathematics 2019-06-12 Changxing Miao , Junyong Zhang , Jiqiang Zheng

A holomorphic representation formula for special parabolic hyperspheres is given.

Differential Geometry · Mathematics 2007-05-23 Vicente Cortes

We construct families of hyperbolic hypersurfaces of degree $2n$ in the projective space $\mathbb{P}^n(\mathbb{C})$ for $3 \leq n \leq 6$.

Complex Variables · Mathematics 2015-12-31 Dinh Tuan Huynh

We give a refined upper bound for the hyperbolic volume of an alternating link in terms of the first three and the last three coefficients of its colored Jones polynomial.

Geometric Topology · Mathematics 2015-08-18 Oliver Dasbach , Anastasiia Tsvietkova

This article emphasizes an extension of the study of metric and par- tition dimension to hypergraphs. We give a sharp lower bounds for the metric and partition dimension of hypergraphs in general and give exact values under specified…

Combinatorics · Mathematics 2024-06-18 Imran Javaid , Azeem Haider , Muhammad Salman , Sadaf Mehtab

We consider the Poisson Boolean continuum percolation model in n-dimensional hyperbolic space. In 2 dimensions we show that there are intensities for the underlying Poisson process for which there are infinitely unbounded components in the…

Probability · Mathematics 2007-11-05 Johan Tykesson