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A set of vertices in a graph is c-colorable if the subgraph induced by the set has a proper c-coloring. In this paper, we study the problem of finding a step-by-step transformation (reconfiguration) between two c-colorable sets in the same…

Data Structures and Algorithms · Computer Science 2018-02-20 Takehiro Ito , Yota Otachi

Let I be an independent set of a graph G. Imagine that a token is located on any vertex of I. We can now move the tokens of I along the edges of the graph as long as the set of tokens still defines an independent set of G. Given two…

Discrete Mathematics · Computer Science 2016-05-03 Marthe Bonamy , Nicolas Bousquet

Given a graph $G$ and two independent sets of $G$, the independent set reconfiguration problem asks whether one independent set can be transformed into the other by moving a single vertex at a time, such that at each intermediate step we…

Discrete Mathematics · Computer Science 2024-02-06 Valentin Bartier , Nicolas Bousquet , Moritz Mühlenthaler

We settle the complexity of the Independent Set Reconfiguration problem on bipartite graphs under all three commonly studied reconfiguration models. We show that under the token jumping or token addition/removal model the problem is…

Computational Complexity · Computer Science 2017-07-11 Daniel Lokshtanov , Amer E. Mouawad

We study reconfiguration of independent sets in interval graphs under the token sliding rule. We show that if two independent sets of size $k$ are reconfigurable in an $n$-vertex interval graph, then there is a reconfiguration sequence of…

Combinatorics · Mathematics 2021-05-10 Marcin Briański , Stefan Felsner , Jędrzej Hodor , Piotr Micek

In this article, we revisit the complexity of the reconfiguration of independent sets under the token sliding rule on chordal graphs. In the \textsc{Token Sliding-Connectivity} problem, the input is a graph $G$ and an integer $k$, and the…

Data Structures and Algorithms · Computer Science 2025-02-19 Rajat Adak , Saraswati Girish Nanoti , Prafullkumar Tale

Let $S$ be an independent set of a simple undirected graph $G$. Suppose that each vertex of $S$ has a token placed on it. The tokens are allowed to be moved, one at a time, by sliding along the edges of $G$, so that after each move, the…

Discrete Mathematics · Computer Science 2024-10-10 Mathew C. Francis , Veena Prabhakaran

In the Token Jumping problem we are given a graph $G = (V,E)$ and two independent sets $S$ and $T$ of $G$, each of size $k \geq 1$. The goal is to determine whether there exists a sequence of $k$-sized independent sets in $G$, $\langle S_0,…

Computational Complexity · Computer Science 2025-01-15 Valentin Bartier , Nicolas Bousquet , Clément Dallard , Kyle Lomer , Amer E. Mouawad

Reconfiguration problems involve determining whether two given configurations can be transformed into each other under specific rules. The Token Sliding problem asks whether, given two different set of tokens on vertices of a graph $G$, we…

Data Structures and Algorithms · Computer Science 2026-03-26 Niranka Banerjee , Christian Engels , Duc A. Hoang

Let $G$ be a graph such that each vertex has its list of available colors, and assume that each list is a subset of the common set consisting of $k$ colors. For two given list colorings of $G$, we study the problem of transforming one into…

Data Structures and Algorithms · Computer Science 2017-05-23 Tatsuhiko Hatanaka , Takehiro Ito , Xiao Zhou

An independent set of a graph $G$ is a vertex subset $I$ such that there is no edge joining any two vertices in $I$. Imagine that a token is placed on each vertex of an independent set of $G$. The $\mathsf{TS}$- ($\mathsf{TS}_k$-)…

Combinatorics · Mathematics 2023-05-18 David Avis , Duc A. Hoang

We study reconfiguration problems for cliques in a graph, which determine whether there exists a sequence of cliques that transforms a given clique into another one in a step-by-step fashion. As one step of a transformation, we consider…

Data Structures and Algorithms · Computer Science 2014-12-15 Takehiro Ito , Hirotaka Ono , Yota Otachi

\textsc{Directed Token Sliding} asks, given a directed graph and two sets of pairwise nonadjacent vertices, whether one can reach from one set to the other by repeatedly applying a local operation that exchanges a vertex in the current set…

Data Structures and Algorithms · Computer Science 2022-03-28 Takehiro Ito , Yuni Iwamasa , Yasuaki Kobayashi , Yu Nakahata , Yota Otachi , Masahiro Takahashi , Kunihiro Wasa

In the \textsc{Coloring Reconfiguration} problem, we are given two proper $k$-colorings of a graph and asked to decide whether one can be transformed into the other by repeatedly applying a specified recoloring rule, while maintaining a…

Data Structures and Algorithms · Computer Science 2025-11-11 Janosch Fuchs , Rin Saito , Tatsuhiro Suga , Takahiro Suzuki , Yuma Tamura

Given a graph $G$ and two independent sets $I_s$ and $I_t$ of size $k$, the independent set reconfiguration problem asks whether there exists a sequence of $k$-sized independent sets $I_s = I_0, I_1, I_2, \ldots, I_\ell = I_t$ such that…

Computational Complexity · Computer Science 2022-04-13 Valentin Bartier , Nicolas Bousquet , Amer E. Mouawad

Suppose that we are given two independent sets I_b and I_r of a graph such that |I_b|=|I_r|, and imagine that a token is placed on each vertex in |I_b|. Then, the sliding token problem is to determine whether there exists a sequence of…

Data Structures and Algorithms · Computer Science 2015-11-03 Takeshi Yamada , Ryuhei Uehara

We study the problem of transforming one list (vertex) coloring of a graph into another list coloring by changing only one vertex color assignment at a time, while at all times maintaining a list coloring, given a list of allowed colors for…

Data Structures and Algorithms · Computer Science 2016-01-20 Tatsuhiko Hatanaka , Takehiro Ito , Xiao Zhou

We study the dominating set reconfiguration problem with the token sliding rule. It consists, given a graph G=(V,E) and two dominating sets D_s and D_t of G, in determining if there exists a sequence S=<D_1:=D_s,...,D_l:=D_t> of dominating…

Combinatorics · Mathematics 2021-02-23 Nicolas Bousquet , Alice Joffard

Suppose that two independent sets $I$ and $J$ of a graph with $\vert I \vert = \vert J \vert$ are given, and a token is placed on each vertex in $I$. The Sliding Token problem is to determine whether there exists a sequence of independent…

Data Structures and Algorithms · Computer Science 2019-05-22 Duc A. Hoang , Amanj Khorramian , Ryuhei Uehara

In the Token Sliding problem we are given a graph $G$ and two independent sets $I_s$ and $I_t$ in $G$ of size $k \geq 1$. The goal is to decide whether there exists a sequence $\langle I_1, I_2, \ldots, I_\ell \rangle$ of independent sets…

Computational Complexity · Computer Science 2022-05-03 Valentin Bartier , Nicolas Bousquet , Jihad Hanna , Amer E. Mouawad , Sebastian Siebertz
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