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Related papers: Cross-sections of multibrot sets

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Our sensor system consists of a combination of Photonic Mixer Device - PMD and Mono optical cameras. Some traffic signs have stripes at 45{deg}. These traffic signs cancel different restrictions on the road. We detect this class of signs…

Computer Vision and Pattern Recognition · Computer Science 2019-08-14 Koba Natroshvili

There are many generalizations of the Erd\H{o}s-Ko-Rado theorem. We give new results (and problems) concerning families of $t$-intersecting $k$-element multisets of an $n$-set and point out connections to coding theory and classical…

Combinatorics · Mathematics 2014-03-11 Zoltán Füredi , Dániel Gerbner , Máté Vizer

We classify the connected-homogeneous digraphs with more than one end. We further show that if their underlying undirected graph is not connected-homogeneous, they are highly-arc-transitive.

Combinatorics · Mathematics 2010-04-30 Matthias Hamann , Fabian Hundertmark

What is the maximum number of intersections of the boundaries of a simple $m$-gon and a simple $n$-gon, assuming general position? This is a basic question in combinatorial geometry, and the answer is easy if at least one of $m$ and $n$ is…

Combinatorics · Mathematics 2023-05-17 Eyal Ackerman , Balázs Keszegh , Günter Rote

We prove a structure theorem for the multibrot sets, which are the higher degree analogues of the Mandelbrot set, and give a complete picture of the landing behavior of the rational parameter rays and the bifurcation phenomenon. Our proof…

Dynamical Systems · Mathematics 2016-05-27 Dominik Eberlein , Sabyasachi Mukherjee , Dierk Schleicher

Let $S_{g,p}$ denote the genus $g$ orientable surface with $p \ge 0$ punctures, and let $\omega(g,p)= 3g+p-4$. We prove the existence of infinitely long geodesic rays $\left\{v_{0},v_{1}, v_{2}, ...\right\}$ in the curve graph satisfying…

Geometric Topology · Mathematics 2017-05-17 Tarik Aougab , Samuel J. Taylor

We show that a typical Besicovitch set $B$ has intersections of measure zero with every line not contained in it. Moreover, every line in $B$ intersects the union of all the other lines in $B$ in a set of measure zero.

Metric Geometry · Mathematics 2020-01-01 T. Kátay

We analyse the intersection of positively and negatively sectional-hyperbolic sets for flows on compact manifolds. First we prove that such an intersection is hyperbolic if the intersecting sets are both transitive (this is false without…

Dynamical Systems · Mathematics 2014-10-03 S. Bautista , C. A. Morales

We consider bond percolation on $\Z^d\times \Z^s$ where edges of $\Z^d$ are open with probability $p<p_c(\Z^d)$ and edges of $\Z^s$ are open with probability $q$, independently of all others. We obtain bounds for the critical curve in $(p,…

Probability · Mathematics 2017-11-22 Rémy Sanchis , Roger W. C. Silva

Cross-ratio degrees count configurations of points $z_1,\ldots, z_n \in \mathbb{P}^1$ satisfying $n - 3$ cross-ratio constraints, up to isomorphism. These numbers arise in multiple contexts in algebraic and tropical geometry, and may be…

Algebraic Geometry · Mathematics 2021-08-10 Rob Silversmith

We prove that every end of a graph contains either uncountably many disjoint rays or a set of disjoint rays that meet all rays of the end and start at any prescribed feasible set of start vertices. This confirms a conjecture of…

Combinatorics · Mathematics 2017-04-24 J. Pascal Gollin , Karl Heuer

In this article, we give the exact interval of the cross section of the Multibrot sets generated by the polynomial $z^p+c$ where $z$ and $c$ are complex numbers and $p \geq 2$ is an even integer. Furthermore, we show that the same…

General Mathematics · Mathematics 2017-06-07 Pierre-Olivier Parisé , Thomas Ransford , Dominic Rochon

Given a family of sets on the plane, we say that the family is intersecting if for any two sets from the family their interiors intersect. In this paper, we study intersecting families of triangles with vertices in a given set of points. In…

Combinatorics · Mathematics 2021-02-19 Peter Frankl , Andreas Holmsen , Andrey Kupavskii

We prove a symmetric version of B\'ezout's theorem. More precisely, we show that the symmetric orbit type of a transverse intersection of complex symmetric hypersurfaces in projective space is determined by the degrees. In the projective…

Algebraic Geometry · Mathematics 2024-10-01 Samuel Lidz , Zachary Lihn , Adam Melrod

The intersection of two Steiner triple systems (X,A) and (X,B) is the set A intersect B. The fine intersection problem for Steiner triple systems is to determine for each v, the set I(v), consisting of all possible pairs (m,n) such that…

Combinatorics · Mathematics 2008-07-17 Yeow Meng Chee , Alan C. H. Ling , Hao Shen

We propose a general framework governing the intersection properties of extremal rays of irreducible holomorphic symplectic manifolds under the Beauville-Bogomolov form. Our main thesis is that extremal rays associated to Lagrangian…

Algebraic Geometry · Mathematics 2010-06-08 Brendan Hassett , Yuri Tschinkel

Let $\mathcal{A}\subseteq{[n]\choose a}$ and $\mathcal{B}\subseteq{[n]\choose b}$ be two families of subsets of $[n]$, we say $\mathcal{A}$ and $\mathcal{B}$ are cross-intersecting if $A\cap B\neq \emptyset$ for all $A\in\mathcal{A}$,…

Combinatorics · Mathematics 2019-07-30 Xiangliang Kong , Yuanxiao Xi , Gennian Ge

Let \ell be the projected intersection local time of two independent Brownian paths in R^d for d=2,3. We determine the lower tail of the random variable \ell(U), where U is the unit ball. The answer is given in terms of intersection…

Probability · Mathematics 2007-05-23 Achim Klenke , Peter Morters

Three intersection theorems are proved. First, we determine the size of the largest set system, where the system of the pairwise unions is l-intersecting. Then we investigate set systems where the union of any s sets intersect the union of…

Combinatorics · Mathematics 2014-03-04 Gyula O. H. Katona , Dániel T. Nagy

We prove that every pointed closed convex set in $\mathbb{R}^n$ is the intersection of all the rational closed halfspaces that contain it. This generalizes a previous result by the authors for compact convex sets.

Optimization and Control · Mathematics 2018-02-12 Marcel K. de Carli Silva , Levent Tunçel