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We consider tilings of Euclidean spaces by polygons or polyhedra, in particular, tilings made by a substitution process, such as the Penrose tilings of the plane. We define an isomorphism invariant related to a subgroup of rotations and…

Dynamical Systems · Mathematics 2018-07-10 Charles Radin , Lorenzo Sadun

We have exhaustively enumerated all simple, connected graphs of a finite order and have computed a selection of invariants over this set. Integer sequences were constructed from these invariants and checked against the Online Encyclopedia…

Combinatorics · Mathematics 2015-10-23 Travis Hoppe , Anna Petrone

We introduce a novel framework, called Interface Laplace learning, for graph-based semi-supervised learning. Motivated by the observation that an interface should exist between different classes where the function value is non-smooth, we…

Machine Learning · Computer Science 2025-07-08 Tangjun Wang , Chenglong Bao , Zuoqiang Shi

3D pose estimation has recently gained substantial interests in computer vision domain. Existing 3D pose estimation methods have a strong reliance on large size well-annotated 3D pose datasets, and they suffer poor model generalization on…

Computer Vision and Pattern Recognition · Computer Science 2022-07-11 Shannan Guan , Haiyan Lu , Linchao Zhu , Gengfa Fang

We develop a simple method of constructing topological spaces from countable posets with finite levels, one which applies to all second countable T_1 compacta. This results in a duality amenable to building such spaces from finite building…

General Topology · Mathematics 2024-12-06 Adam Bartoš , Tristan Bice , Alessandro Vignati

An $N$-free poset is a poset whose comparability graph does not embed an induced path with four vertices. We use the well-quasi-order property of the class of countable $N$-free posets and some labelled ordered trees to show that a…

Combinatorics · Mathematics 2023-01-09 Davoud Abdi

A generalization of the filled-in Julia set is presented using the multicomplex numbers and an algorithm is presented to visualize these sets in the tridimensional space. There are many ways to visualize these higher dimensional fractals…

Dynamical Systems · Mathematics 2025-05-05 Quentin Charles , Pierre-Olivier Parisé

Given a symmetric monoidal category $C$ with product $\sqcup$, where the neutral element for the product is an initial object, we consider the poset of $\sqcup$-complemented subobjects of a given object $X$. When this poset has finite…

Combinatorics · Mathematics 2025-07-30 Kevin Ivan Piterman , Volkmar Welker

Three new graph invariants are introduced which may be measured from a quantum graph state and form examples of a framework under which other graph invariants can be constructed. Each invariant is based on distinguishing a different number…

Quantum Physics · Physics 2019-11-20 P. W. Mills , R. P. Rundle , J. H. Samson , Simon J. Devitt , Todd Tilma , V. M. Dwyer , Mark J. Everitt

Earlier an arbitrary poset $P$ was proved to be isomorphic to the collection of subsets of a space $M$ with two closures which are closed in the first closure and open in the other. As a space $M$ for this representation an algebraic dual…

General Topology · Mathematics 2007-05-23 R. Breslav , A. Stavrova , R. R. Zapatrin

In this dissertation, we explore the structure of inversion graphs of permutations--a class of graphs that naturally arises by representing each permutation as a graph, where vertices correspond to entries and edges encode inversions.…

Combinatorics · Mathematics 2025-06-30 Sean Mandrick

The aim of the present paper is to extend the concept of a congruence from lattices to posets. We use an approach different from that used by the first author and V. Sn\'a\v{s}el. By using our definition we show that congruence classes are…

Combinatorics · Mathematics 2025-03-25 Ivan Chajda , Helmut Länger

We present the Julia interface Polymake.jl to polymake, a software for research in polyhedral geometry. We describe the technical design and how the integration into Julia makes it possible to combine polymake with state-of-the-art…

Combinatorics · Mathematics 2020-03-26 Marek Kaluba , Benjamin Lorenz , Sascha Timme

This paper presents a novel approach to constructing finite generating sets for infinitely generated ideals. By integrating algebraic and computational techniques, we provide a method to identify finite generators, demonstrated through…

Commutative Algebra · Mathematics 2025-08-08 Takafumi Shibuta

Grasping unseen objects in unconstrained, cluttered environments is an essential skill for autonomous robotic manipulation. Despite recent progress in full 6-DoF grasp learning, existing approaches often consist of complex sequential…

Robotics · Computer Science 2021-03-29 Martin Sundermeyer , Arsalan Mousavian , Rudolph Triebel , Dieter Fox

We search for faces of the convex set consisting of all separable states, which are affinely isomorphic to simplices, to get separable states with unique decompositions. In the two-qutrit case, we found that six product vectors spanning a…

Quantum Physics · Physics 2014-07-22 Kil-Chan Ha , Seung-Hyeok Kye

In this paper, we study the dualization in distributive lattices, a generalization of the well-known hypergraph dualization problem. We in particular propose equivalent formulations of the problem in terms of graphs, hypergraphs, and…

Discrete Mathematics · Computer Science 2020-05-26 Oscar Defrain , Lhouari Nourine , Takeaki Uno

For any finite totally ordered set, the multisets of intervals form an abelian category. Various classes of subcategories admit natural combinatorial descriptions, and counting them yields familiar integer sequences. Surprisingly, in some…

Representation Theory · Mathematics 2026-02-02 Henning Krause , Balduin Stoye

We propose ways to speed up the initial pose-graph generation for global Structure-from-Motion algorithms. To avoid forming tentative point correspondences by FLANN and geometric verification by RANSAC, which are the most time-consuming…

Computer Vision and Pattern Recognition · Computer Science 2020-11-30 Daniel Barath , Dmytro Mishkin , Ivan Eichhardt , Ilia Shipachev , Jiri Matas

The interval poset of a permutation is the set of intervals of a permutation, ordered with respect to inclusion. It has been introduced and studied recently in [B. Tenner, arXiv:2007.06142]. We study this poset from the perspective of the…

Combinatorics · Mathematics 2024-06-11 Mathilde Bouvel , Lapo Cioni , Benjamin Izart
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