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We extend so-called slit-slide-sew bijections to constellations and quasiconstellations. We present an involution on the set of hypermaps given with an orientation, one distinguished corner, and one distinguished edge leading away from the…

Combinatorics · Mathematics 2025-12-08 Jérémie Bettinelli , Dimitri Korkotashvili

The preference graph is a combinatorial representation of the structure of a normal-form game. Its nodes are the strategy profiles, with an arc between profiles if they differ in the strategy of a single player, where the orientation…

Computer Science and Game Theory · Computer Science 2025-02-07 Oliver Biggar , Iman Shames

By introducing the notion of relative derangements of type $B$, also called signed relative derangements, which are defined in terms of signed permutations, we obtain a type $B$ analogue of the well-known relation between relative…

Combinatorics · Mathematics 2007-08-28 William Y. C. Chen , Jessica C. Y. Zhang

Embedding diagrams have been used extensively to visualize the properties of curved space in Relativity. We introduce a new kind of embedding diagram based on the {\it extrinsic} curvature (instead of the intrinsic curvature). Such an…

General Relativity and Quantum Cosmology · Physics 2015-06-25 J. L. Lu , W. -M. Suen

This is a preliminary work on configuration knowledge representation which serves as a foundation for building interactive configuration systems in Answer Set programming (ASP). The major concepts of the product configuration problem are…

Artificial Intelligence · Computer Science 2021-09-20 Seemran Mishra

An $(n_k)$-configuration is a set of $n$ points and $n$ lines in the projective plane such that their point-line incidence graph is $k$-regular. The configuration is geometric, topological, or combinatorial depending on whether lines are…

Computational Geometry · Computer Science 2023-11-14 Jürgen Bokowski , Vincent Pilaud

The notion of an equational shell is studied to involve the objects and their environment. Appropriate methods are studied as valid embeddings of refined objects. The refinement process determines the linkages between the variety of…

Logic in Computer Science · Computer Science 2007-05-23 Larissa Ismailova

Ideological attitudes and stance are often expressed through subtle meanings of words and phrases. Understanding these connotations is critical to recognizing the cultural and emotional perspectives of the speaker. In this paper, we use…

Computation and Language · Computer Science 2021-03-02 Emily Allaway , Kathleen McKeown

We relate the notions of spectral gap for unitary representations and subfactors with definability of certain important sets in the corresponding structures. We give several applications of this relationship.

Logic · Mathematics 2018-05-09 Isaac Goldbring

This exploratory paper considers the notion of a covering of a configuration and $G$-coverings which are coverings that are quotients under a semi-regular group action. We consider prime configurations, those which cannot $G$-cover other…

Combinatorics · Mathematics 2021-02-24 Benjamin Peet

A new category of algebro-geometric objects is defined. This construction is a vast generalization of existing F1-theories, as it contains the the theory of monoid schemes on the one hand and classical algebraic theory, e.g. Grothendieck…

Algebraic Geometry · Mathematics 2017-09-04 Anton Deitmar

In [1] we introduced the concept of structured space, which is a topological space that locally resembles some algebraic structures. In [2] we proceeded the study of these spaces, developing two cohomology theories. The aim of this paper is…

Algebraic Topology · Mathematics 2020-04-28 Manuel Norman

The phenomenon of Human Pose Estimation (HPE) is a problem that has been explored over the years, particularly in computer vision. But what exactly is it? To answer this, the concept of a pose must first be understood. Pose can be defined…

Computer Vision and Pattern Recognition · Computer Science 2021-10-14 Rohit Josyula , Sarah Ostadabbas

A concept of "evolving categories" is suggested to build a simple, scalable, mathematically consistent framework for representing in uniform way both data and algorithms. A state machine for executing algorithms becomes clear, rich and…

Data Structures and Algorithms · Computer Science 2007-05-23 Evgeny Yanenko

It is shown that the projection image of an oriented spatial arc to any oriented plane is approximated by a unique arc diagram (up to isomorphic arc diagrams) determined from the spatial arc and the projection. In a separated paper, the…

Geometric Topology · Mathematics 2019-07-25 Akio Kawauchi

Combinatorial optimization can be described as the problem of finding a feasible subset that maximizes a objective function. The paper discusses combinatorial optimization problems, where for each dimension the set of feasible subsets is…

Computational Complexity · Computer Science 2024-11-27 Nimrod Megiddo

We investigate the relationship between the configuration category of a manifold and the configuration category of a covering space of that manifold.

Algebraic Topology · Mathematics 2024-01-02 Pedro Boavida de Brito , Michael S. Weiss

We introduce ConceptVision, a method that aims for high accuracy in categorizing large number of scenes, while keeping the model relatively simpler and efficient for scalability. The proposed method combines the advantages of both low-level…

Computer Vision and Pattern Recognition · Computer Science 2014-10-31 Ahmet Iscen , Eren Golge , Ilker Sarac , Pinar Duygulu

We introduce the warping matrix which is a new description of oriented knots from a viewpoint of warping degree.

Geometric Topology · Mathematics 2015-08-17 Ayaka Shimizu

A schemoid is a generalization of association schemes from the point of view of small categories. In this article, we discuss schemoid structures for two kinds of small categories; the canonical small category defined by a poset, and…

Combinatorics · Mathematics 2016-11-16 Yasuhide Numata
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