Results 1 to 10 of about 1,670 (73)

Schwartz-Zippel bounds for two-dimensional products [PDF]

open access: yesDiscrete Analysis, 2017
Schwartz-Zippel bounds for two-dimensional products, Discrete Analysis 2017:20, A famous open problem in combinatorial geometry is Erdős's unit-distances problem, which asks the following: given a subset $A\subset\mathbb R^2$ of size $n$, how many ...
Hossein Nassajian Mojarrad   +3 more
doaj   +3 more sources

Combinatorial Nullstellensatz modulo prime powers and the Parity Argument [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2014
We present new generalizations of Olson's theorem and of a consequence of Alon's Combinatorial Nullstellensatz. These enable us to extend some of their combinatorial applications with conditions modulo primes to conditions modulo prime powers. We analyze
Varga, László
core   +5 more sources

Application of the Combinatorial Nullstellensatz to Integer-magic Graph Labelings

open access: yesTheory and Applications of Graphs, 2022
Let $A$ be a nontrivial abelian group and $A^* = A \setminus \{0\}$. A graph is $A$-magic if there exists an edge labeling $f$ using elements of $A^*$ which induces a constant vertex labeling of the graph.
Richard Low, Dan Roberts
doaj   +3 more sources

Neighbor Sum Distinguishing Total Choosability of IC-Planar Graphs without Theta Graphs Θ2,1,2

open access: yesMathematics, 2021
A theta graph Θ2,1,2 is a graph obtained by joining two vertices by three internally disjoint paths of lengths 2, 1, and 2. A neighbor sum distinguishing (NSD) total coloring ϕ of G is a proper total coloring of G such that ∑z∈EG(u)∪{u}ϕ(z)≠∑z∈EG(v)∪{v}ϕ(
Donghan Zhang
doaj   +1 more source

Graph choosability and double list colorability [PDF]

open access: yesOpuscula Mathematica, 2010
In this paper, we give a sufficient condition for graph choosability, based on Combinatorial Nullstellensatz and a specific property, called "double list colorability", which means that there is a list assignment for which there are exactly two ...
Hamid-Reza Fanaï
doaj   +1 more source

List circular backbone colouring [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2014
A natural generalization of graph colouring involves taking colours from a metric space and insisting that the endpoints of an edge receive colours separated by a minimum distance dictated by properties of the edge.
Frederic Havet, Andrew D. King
doaj   +1 more source

Neighbor Product Distinguishing Total Colorings of Planar Graphs with Maximum Degree at least Ten

open access: yesDiscussiones Mathematicae Graph Theory, 2021
A proper [k]-total coloring c of a graph G is a proper total coloring c of G using colors of the set [k] = {1, 2, . . . , k}. Let p(u) denote the product of the color on a vertex u and colors on all the edges incident with u.
Dong Aijun, Li Tong
doaj   +1 more source

Combinatorial Nullstellensatz and DP-coloring of graphs [PDF]

open access: yesDiscrete Mathematics, 2020
17 ...
Hemanshu Kaul, Jeffrey A. Mudrock
openaire   +2 more sources

Bounding the monomial index and (1,l)-weight choosability of a graph [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2014
Graph ...
Ben Seamone
doaj   +1 more source

Tropical Combinatorial Nullstellensatz and Sparse Polynomials [PDF]

open access: yesFoundations of Computational Mathematics, 2019
Tropical algebra emerges in many fields of mathematics such as algebraic geometry, mathematical physics and combinatorial optimization. In part, its importance is related to the fact that it makes various parameters of mathematical objects computationally accessible.
Grigoriev, Dima, Podolskii, Vladimir
openaire   +3 more sources

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