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We study the arithmetic self-intersection number of the dualizing sheaf on arithmetic surfaces with respect to morphisms of a particular kind. We obtain upper bounds for the arithmetic self-intersection number of the dualizing sheaf on…

Number Theory · Mathematics 2013-08-15 Ulf Kuehn

In this work, we study a mathematically rigorous metric of a graph visualization quality under conditions that relate to visualizing a bipartite graph. Namely we study rectilinear crossing number in a special arrangement of the complete…

Combinatorics · Mathematics 2023-10-25 Mohsen Nafar

We unfold the codimension-two simultaneous occurrence of a border-collision bifurcation and a period-doubling bifurcation for a general piecewise-smooth, continuous map. We find that, with sufficient non-degeneracy conditions, a locus of…

Dynamical Systems · Mathematics 2015-05-13 David J. W. Simpson , James D. Meiss

In the realm of computer-aided design (CAD) software, the intersection of B-spline surfaces stands as a fundamental operation. Despite the extensive history of surface intersection algorithms, the challenge of handling complex intersection…

Computational Geometry · Computer Science 2026-04-15 Chenming Gao , Hongwei Lin , Gengchen Li

Expansions are provided for the moments of the number of collisions $X_n$ in the $\beta(2,b)$-coalescent restricted to the set $\{1,...,n\}$. We verify that $X_n/\mathbb{E}X_n$ converges almost surely to one and that $X_n$, properly…

Statistics Theory · Mathematics 2009-09-07 Alex Iksanov , Alex Marynych , Martin Möhle

We present an efficient method for classifying the morphology of the intersection curve of two quadrics (QSIC) in PR3, 3D real projective space; here, the term morphology is used in a broad sense to mean the shape, topological, and…

Computational Geometry · Computer Science 2007-05-23 Changhe Tu , Wenping Wang , Bernard Mourrain , Jiaye Wang

In this paper, we compute the number of self-intersections of a plane projection of a generic complete intersection curve defined by polynomials with the given support. Moreover, we discuss the tropical counterpart of this problem.

Algebraic Geometry · Mathematics 2020-03-24 Arina Voorhaar

The quantum graph plays the role of a solvable model for a two-dimensional network. Here fitting parameters of the quantum graph for modelling the junction is discussed, using previous results of the second author.

Mathematical Physics · Physics 2007-06-13 M. Harmer , B. S. Pavlov , A. Yafyasov

We study integral plane curves meeting at a single unibranch point and show that such curves must satisfy two equivalent conditions. A numeric condition: the local invariants of the curves at the contact point must be arithmetically…

Algebraic Geometry · Mathematics 2026-03-17 Lucia Caporaso , Amos Turchet

In this short note, we give a new sufficient condition for the existence of long cycles in graphs involving Fan-type degree condition and neighborhood intersection.

Combinatorics · Mathematics 2016-06-27 Bo Ning

We give lower bounds on the case of worst inhomogeneous approximation.

Number Theory · Mathematics 2016-03-22 Chris Pinner

We show that oriented percolation occurs whenever a condition is satisfied called "exponential intersection tails". This condition says that a measure on paths exists for which the probability of two independent paths intersecting in more…

Probability · Mathematics 2016-09-07 Itai Benjamini , Robin Pemantle , Yuval Peres

Classically, B\'ezout's theorem says that an intersection of hypersurfaces in a projective space is rationally equivalent to a number of copies of a smaller projective space, the number depending on the degrees of the hypersurfaces. We give…

Algebraic Topology · Mathematics 2023-12-04 Steven R. Costenoble , Thomas Hudson

In this paper, we consider two properties on the braid index of a two-bridge knot. We prove an inequality on the braid indices of two-bridge knots if there exists an epimorphism between their knot groups. Moreover, we provide the average…

Geometric Topology · Mathematics 2023-10-05 Masaaki Suzuki , Anh T. Tran

We show the possible Milnor numbers of deformations of semi-quasi-homogeneous isolated plane curve singularities. In Theorem 1.1 we list integers can be attained as Milnor numbers of a given semi-quasi-homogeneous singularity.

Algebraic Geometry · Mathematics 2016-08-15 Maria Michalska , Justyna Walewska

The {\it crossing number} of a graph $G$ is the minimum number of pairwise intersections of edges in a drawing of $G$. In this paper, we study the crossing numbers of $K_{m}\times P_n$ and $K_{m}\times C_n$.

Discrete Mathematics · Computer Science 2012-11-21 Yuansheng Yang , Baigong Zheng , Xirong Xu , Xiaohui Lin

The "finite intersection property" for bifunctions is introduced and its relationship with generalized monotonicity properties is studied. Some results concerning existence of solution for (quasi-)equilibrium problems are established and…

Optimization and Control · Mathematics 2020-02-13 John Cotrina , Anton Svensson

We present certain new properties about the intersection numbers on moduli spaces of curves $\bar{\sM}_{g,n}$, including a simple explicit formula of $n$-point functions and several new identities of intersection numbers. In particular we…

Algebraic Geometry · Mathematics 2011-03-24 Kefeng Liu , Hao Xu

Suppose $V$ is a singular complex analytic curve inside $\mathbb{C}^{2}$. We investigate when a singular or non-singular complex analytic curve $W$ inside $\mathbb{C}^{2}$ with sufficiently small Hausdorff distance $d_{H}(V, W)$ from $V$…

Complex Variables · Mathematics 2025-02-07 Achinta Kumar Nandi

We investigate edge-intersection graphs of paths in the plane grid, regarding a parameter called the bend-number. I.e., every vertex is represented by a grid path and two vertices are adjacent if and only if the two grid paths share at…

Combinatorics · Mathematics 2012-08-21 Daniel Heldt , Kolja Knauer , Torsten Ueckerdt