English
Related papers

Related papers: A computer based classification of caps in PG(4,2)

200 papers

This article aims to find explicit congruences between Dirichlet characters and gives various results on how to find some effectively on a computer. It ends with concrete examples putting those ideas in application.

Number Theory · Mathematics 2012-12-18 Julien Puydt

Shape completion, the problem of estimating the complete geometry of objects from partial observations, lies at the core of many vision and robotics applications. In this work, we propose Point Completion Network (PCN), a novel…

Computer Vision and Pattern Recognition · Computer Science 2019-09-30 Wentao Yuan , Tejas Khot , David Held , Christoph Mertz , Martial Hebert

We survey group-theoretic algorithms for finding (some or all) subgroups of a finite group and discuss the implementation of these algorithms in the computer algebra system GAP

Group Theory · Mathematics 2020-12-04 Alexander Hulpke

Nondegenerate plane congruences in the four-dimensional complex projective space with degenerate general focal conic are classified by using the focal method due to Corrado Segre.

Algebraic Geometry · Mathematics 2007-05-23 Manuel Pedreira-Perez , Luis-Eduardo Sola-Conde

Understanding morphological types of galaxies is a key parameter for studying their formation and evolution. Neural networks that have been used previously for galaxy morphology classification have some disadvantages, such as not being…

Instrumentation and Methods for Astrophysics · Physics 2019-04-10 Reza Katebi , Yadi Zhou , Ryan Chornock , Razvan Bunescu

In this paper, we first prove the 2-rank of full incidence matrix of PG(n,q) with $q$ an odd prime power. Then by the quadratic form defined on PG(n,q), the points of it are classified as isotropic and anisotropic points. We divide the full…

Number Theory · Mathematics 2013-03-19 Chunlei Liu , Yan Liu

It is known that the Hermitian varieties are codewords in the code defined by the points and hyperplanes of the projective spaces $PG(r,q^2)$. In finite geometry, also quasi-Hermitian varieties are defined. These are sets of points of…

Combinatorics · Mathematics 2017-06-22 A. Aguglia , D. Bartoli , L. Storme , Zs. Weiner

We present a powerful method to extract per-point semantic class labels from aerialphotogrammetry data. Labeling this kind of data is important for tasks such as environmental modelling, object classification and scene understanding. Unlike…

Computer Vision and Pattern Recognition · Computer Science 2017-05-24 Carlos Becker , Nicolai Häni , Elena Rosinskaya , Emmanuel d'Angelo , Christoph Strecha

Graph neural networks have emerged as a promising paradigm for image processing, yet their performance in image classification tasks is hindered by a limited consideration of the underlying structure and relationships among visual entities.…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Usama Zidan , Mohamed Gaber , Mohammed M. Abdelsamea

We introduce an end-to-end learnable technique to robustly identify feature edges in 3D point cloud data. We represent these edges as a collection of parametric curves (i.e.,lines, circles, and B-splines). Accordingly, our deep neural…

Computer Vision and Pattern Recognition · Computer Science 2020-10-27 Xiaogang Wang , Yuelang Xu , Kai Xu , Andrea Tagliasacchi , Bin Zhou , Ali Mahdavi-Amiri , Hao Zhang

We present an improved incremental selection algorithm of the selection algorithm presented in [1] and prove all the selected conjectures.

Artificial Intelligence · Computer Science 2025-11-04 Jovial Cheukam Ngouonou , Ramiz Gindullin , Claude-Guy Quimper , Nicolas Beldiceanu , Remi Douence

Point cloud completion is a vital task focused on reconstructing complete point clouds and addressing the incompleteness caused by occlusion and limited sensor resolution. Traditional methods relying on fixed local region partitioning, such…

Graphics · Computer Science 2025-09-30 Zhenyu Shu , Jian Yao , Shiqing Xin

The method of preliminary group classification is rigorously defined, enhanced and related to the theory of group classification of differential equations. Typical weaknesses in papers on this method are discussed and strategies to overcome…

Mathematical Physics · Physics 2011-06-22 Elsa Dos Santos Cardoso-Bihlo , Alexander Bihlo , Roman O. Popovych

Hypergraph spectral analysis has emerged as an effective tool processing complex data structures in data analysis. The surface of a three-dimensional (3D) point cloud and the multilateral relationship among their points can be naturally…

Signal Processing · Electrical Eng. & Systems 2021-01-01 Songyang Zhang , Shuguang Cui , Zhi Ding

We investigate the computational complexity of mining guarded clauses from clausal datasets through the framework of inductive logic programming (ILP). We show that learning guarded clauses is NP-complete and thus one step below the…

Computational Complexity · Computer Science 2021-10-08 Andrei Draghici , Georg Gottlob , Matthias Lanzinger

We classify, up to conjugacy, the finite subgroups of PGL(2,K) of order prime to char(K).

Algebraic Geometry · Mathematics 2009-09-23 Arnaud Beauville

In this paper, we introduce a novel method that combines multiple neural network results to decide the class of the input. This is the first study which used the method for web pages classification. In our model, each element is represented…

Computer Vision and Pattern Recognition · Computer Science 2020-12-29 Fahri Aydos , A. Murat Özbayoğlu , Yahya Şirin , M. Fatih Demirci

In this paper we give a unified approach in categorical setting to the problem of finding the Galois closure of a finite cover, which includes as special cases the familiar finite separable field extensions, finite unramified covers of a…

Number Theory · Mathematics 2017-07-04 Hau-Wen Huang , Wen-Ching Winnie Li

This paper is devoted to the investigation of selected situations when the computation of projective (and other) equivalences of algebraic varieties can be efficiently solved with the help of finding projective equivalences of finite sets…

Computational Geometry · Computer Science 2018-06-18 Michal Bizzarri , Miroslav Lávička , Jan Vršek

We completely classify edge-to-edge tilings of the sphere by congruent quadrilaterals. As part of the classification, we also present a modern version of the classification of edge-to-edge tilings of the sphere by congruent triangles.…

Combinatorics · Mathematics 2024-02-09 Ho Man Cheung , Hoi Ping Luk , Min Yan