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We present two constructions, both inspired by ideas from graph theory, of sequences random surfaces of growing area, whose systoles grow logarithmically as a function of their area. This also allows us to prove a new lower bound on the…

Geometric Topology · Mathematics 2024-03-04 Mingkun Liu , Bram Petri

We present new constructions of Kaehler metrics with constant scalar curvature on complex surfaces, in particular on certain del Pezzo surfaces. Some higher dimensional examples are provided as well.

Differential Geometry · Mathematics 2007-05-23 Yann Rollin , Michael A. Singer

This is the English translation of Leonhard Euler's Latin paper "De solidis quorum superficiem in planum explicare licet". Euler explains several methods to obtain equations for developable surfaces. Therefore, this paper might be…

History and Overview · Mathematics 2018-10-02 Leonhard Euler , Alexander Aycock

We propose an extension of the Allen-Cahn model for pattern synthesis on two dimensional curved surfaces. This model is based on a single PDE and it offers improved ability of controlling the type of generated surface patterns via the…

Numerical Analysis · Mathematics 2020-08-19 Lorina Dascal , Gautam Pai , Ron Kimmel

Delineating the lesion area is an important task in image-based diagnosis. Pixel-wise classification is a popular approach to segmenting the region of interest. However, at fuzzy boundaries such methods usually result in glitches,…

Computer Vision and Pattern Recognition · Computer Science 2021-08-03 Haichou Chen , Yishu Deng , Bin Li , Zeqin Li , Haohua Chen , Bingzhong Jing , Chaofeng Li

We present algorithms used in the computational part of the article "Special homogeneous linear systems on Hirzebruch surfaces".

Algebraic Geometry · Mathematics 2009-11-10 Marcin Dumnicki

A method is presented for constructing closed surfaces out of Euclidean polygons with infinitely many segment identifications along the boundary. The metric on the quotient is identified. A sufficient condition is presented which guarantees…

Dynamical Systems · Mathematics 2014-11-11 André de Carvalho , Toby Hall

We classify hyperbolic polynomials in two real variables that admit a transitive action on some component of their hyperbolic level sets. Such surfaces are called special homogeneous surfaces, and they are equipped with a natural Riemannian…

Differential Geometry · Mathematics 2024-12-11 David Lindemann , Andrew Swann

In this paper we present an iterative construction of irreducible polynomials over finite fields based upon repeated applications of transforms induced by endomorphisms of odd prime degree of ordinary elliptic curves.

Number Theory · Mathematics 2019-07-31 Simone Ugolini

In this article we describe an algorithm that can be applied for the generation of various classes of maps on orientable surfaces. It uses existing generators for abstract graphs and combines them with an efficient embedding and isomorphism…

Combinatorics · Mathematics 2024-08-30 Gunnar Brinkmann

In this paper we develop and study adaptive empirical Bayesian smoothing splines. These are smoothing splines with both smoothing parameter and penalty order determined via the empirical Bayes method from the marginal likelihood of the…

Statistics Theory · Mathematics 2015-11-18 Paulo Serra , Tatyana Krivobokova

Subdivision schemes are iterative methods for the design of smooth curves and surfaces. Any linear subdivision scheme can be identified by a sequence of Laurent polynomials, also called subdivision symbols, which describe the linear rules…

Numerical Analysis · Mathematics 2014-11-14 Costanza Conti , Luca Gemignani , Lucia Romani

Polygon meshes are an efficient representation of 3D geometry, and are of central importance in computer graphics, robotics and games development. Existing learning-based approaches have avoided the challenges of working with 3D meshes,…

Graphics · Computer Science 2020-02-26 Charlie Nash , Yaroslav Ganin , S. M. Ali Eslami , Peter W. Battaglia

An extension to triangular domains of the univariate q-Bernstein basis functions is introduced and analyzed. Some recurrence relations and properties such as partition of unity and degree elevation are proved for them. It is also proved…

Numerical Analysis · Mathematics 2025-01-23 Jorge Delgado , Héctor Orera , Juan Manuel Peña

Motivated by a conjecture of Xiao, we study supporting divisors of fibred surfaces. On the one hand, after developing a formalism to treat one-dimensional families of varieties of any dimension, we give a structure theorem for fibred…

Algebraic Geometry · Mathematics 2016-02-22 Víctor González-Alonso

Intrinsic and parametric regression models are of high interest for the statistical analysis of manifold-valued data such as images and shapes. The standard linear ansatz has been generalized to geodesic regression on manifolds making it…

Optimization and Control · Mathematics 2020-10-19 Martin Hanik , Hans-Christian Hege , Anaja Hennemuth , Christoph von Tycowicz

We propose and experimentally test a method to fabricate patterns of steep, sharp features on surfaces, by exploiting the nonlinear dynamics of uniformly ion bombarded surfaces. We show via theory, simulation, and experiment, that the…

Materials Science · Physics 2017-02-08 Joy C. Perkinson , Michael J. Aziz , Michael P. Brenner , Miranda Holmes-Cerfon

We investigate the notion of the $p$-divisor for foliations on a smooth algebraic surface defined over a field of positive characteristic $p$ and we study some of their properties. We present a structure theorem for the $p$-divisor of…

Algebraic Geometry · Mathematics 2022-06-16 Wodson Mendson

We analyze the space of geometrically continuous piecewise polynomial functions or splines for quadrangular and triangular patches with arbitrary topology and general rational transition maps. To define these spaces of G 1 spline functions,…

Algebraic Geometry · Mathematics 2016-03-24 Bernard Mourrain , Raimundas Vidunas , Nelly Villamizar

The paper develops a method for recovering a one-dimensional rough surface profile from scattered wave field, using a single receiver and repeated measurements when the surface is moving with respect to source and receiver. This extends a…

Computational Physics · Physics 2023-12-26 Yuxuan Chen , Mark Spivack , Orsola Rath Spivack