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A vertex subset $S$ of a graph $G$ is a general position set of $G$ if no vertex of $S$ lies on a geodesic between two other vertices of $S$. The cardinality of a largest general position set of $G$ is the general position number ${\rm…

Combinatorics · Mathematics 2019-04-17 Bijo S. Anand , Ullas Chandran S. V. , Manoj Changat , Sandi Klavžar , Elias John Thomas

In the geodetic convexity, a set of vertices $S$ of a graph $G$ is $\textit{convex}$ if all vertices belonging to any shortest path between two vertices of $S$ lie in $S$. The cardinality $con(G)$ of a maximum proper convex set $S$ of $G$…

Discrete Mathematics · Computer Science 2023-06-22 Diane Castonguay , Erika M. M. Coelho , Hebert Coelho , Julliano R. Nascimento

The general position number ${\rm gp}(G)$ of a connected graph $G$ is the cardinality of a largest set $S$ of vertices such that no three pairwise distinct vertices from $S$ lie on a common geodesic. The $n$-dimensional grid graph $\pn$ is…

Combinatorics · Mathematics 2020-05-07 Sandi Klavžar , Gregor Rus

A vertex subset $S$ of a graph $G$ is a general position set of $G$ if no vertex of $S$ lies on a geodesic between two other vertices of $S$. The cardinality of a largest general position set of $G$ is the general position number…

The general position number ${\rm gp}(G)$ of a connected graph $G$ is the cardinality of a largest set $S$ of vertices such that no three pairwise distinct vertices from $S$ lie on a common geodesic. It is proved that ${\rm gp}(G)\ge…

Combinatorics · Mathematics 2019-06-04 Sandi Klavzar , Ismael G. Yero

The general position number ${\rm gp}(G)$ of a connected graph $G$ is the cardinality of a largest set $S$ of vertices such that no three distinct vertices from $S$ lie on a common geodesic; such sets are refereed to as gp-sets of $G$. The…

Combinatorics · Mathematics 2021-05-11 Sandi Klavžar , Balázs Patkós , Gregor Rus , Ismael G. Yero

A set of vertices $S$ of a graph $G$ is a (geodesic)convex set, if $S$ contains all the vertices belonging to any shortest path connecting between two vertices of $S$. The cardinality of maximum proper convex set of $G$ is called the…

Combinatorics · Mathematics 2020-09-01 Neethu P. K. , Ullas Chandran S.

The general position problem is to find the cardinality of a largest vertex subset S such that no triple of vertices of S lie on a common geodesic. For a connected graph G, the cardinality of S is denoted by gp(G) and called gp-number (or…

Combinatorics · Mathematics 2020-02-11 Yan Yao , Mengya He , Shengjin Ji , Guang Li

Getting inspired by the famous no-three-in-line problem and by the general position subset selection problem from discrete geometry, the same is introduced into graph theory as follows. A set $S$ of vertices in a graph $G$ is a general…

Combinatorics · Mathematics 2020-04-10 Elias John Thomas , Ullas Chandran S. V.

Let $G$ be a finite, simple, and undirected graph and let $S$ be a set of vertices of $G$. In the geodetic convexity, a set of vertices $S$ of a graph $G$ is convex if all vertices belonging to any shortest path between two vertices of $S$…

Discrete Mathematics · Computer Science 2018-07-24 Erika M. M. Coelho , Hebert Coelho , Julliano R. Nascimento , Jayme L. Szwarcfiter

The general position number of a connected graph is the cardinality of a largest set of vertices such that no three pairwise-distinct vertices from the set lie on a common shortest path. In this paper it is proved that the general position…

Combinatorics · Mathematics 2023-06-22 Jing Tian , Kexiang Xu , Sandi Klavžar

The general $d$-position number ${\rm gp}_d(G)$ of a graph $G$ is the cardinality of a largest set $S$ for which no three distinct vertices from $S$ lie on a common geodesic of length at most $d$. This new graph parameter generalizes the…

Combinatorics · Mathematics 2020-05-19 Sandi Klavzar , Douglas F. Rall , Ismael G. Yero

Given a graph $G$, the (graph theory) general position problem is to find the maximum number of vertices such that no three vertices lie on a common geodesic. This graph invariant is called the general position number (gp-number for short)…

Combinatorics · Mathematics 2017-10-03 Paul Manuel , Sandi Klavžar

A subset $R\subseteq V(G)$ of a graph $G$ is a general position set if any triple set $R_0$ of $R$ is non-geodesic in $G$, that is, no vertex of $R_0$ lies on any geodesic between the other two vertices of $R_0$ in $G$. Let $\mathcal{R}$ be…

Combinatorics · Mathematics 2022-09-30 Jing Tian , Kexiang Xu , Daikun Chao

In a graph $G$, a geodesic between two vertices $x$ and $y$ is a shortest path connecting $x$ to $y$. A subset $S$ of the vertices of $G$ is in general position if no vertex of $S$ lies on any geodesic between two other vertices of $S$. The…

Combinatorics · Mathematics 2019-07-23 Balázs Patkós

Let ${\rm gp}(G)$ be the general position number of a graph $G$. It is proved that ${\rm gp}(G-x)\leq 2{\rm gp}(G)$ holds for any vertex $x$ of a connected graph $G$ and that if $x$ lies in some ${\rm gp}$-set of $G$, then ${\rm gp}(G) - 1…

Combinatorics · Mathematics 2025-12-10 Pakanun Dokyeesun , Sandi Klavžar , Jing Tian

A set of edges $X\subseteq E(G)$ of a graph $G$ is an edge general position set if no three edges from $X$ lie on a common shortest path. The edge general position number ${\rm gp}_{\rm e}(G)$ of $G$ is the cardinality of a largest edge…

Combinatorics · Mathematics 2023-10-17 Jing Tian , Sandi Klavžar , Elif Tan

Given a graph $G$, the general position problem is to find a largest set $S$ of vertices of $G$ such that no three vertices of $S$ lie on a common geodesic. Such a set is called a ${\rm gp}$-$set$ of $G$ and its cardinality is the ${\rm…

Combinatorics · Mathematics 2021-05-11 Paul Manuel , R. Prabha , Sandi Klavžar

A set $S$ of vertices of a graph $G$ is \emph{monophonic convex} if $S$ contains all the vertices belonging to any induced path connecting two vertices of $S$. The cardinality of a maximum proper monophonic convex set of $G$ is called the…

Combinatorics · Mathematics 2023-06-13 Neethu P. K. , Ullas Chandran S. V. , Julliano R. Nascimento

A set $S$ of vertices in a graph $G(V,E)$ is called a dominating set if every vertex $v\in V$ is either an element of $S$ or is adjacent to an element of $S$. A set $S$ of vertices in a graph $G(V,E)$ is called a total dominating set if…

Combinatorics · Mathematics 2008-10-28 Maryam Atapour , Nasrin Soltankhah
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