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Carl Johan Casselgren

Professor, Head of Division

Head of the Division of Algebra, Geometry and Discrete Mathematics (ALGD). I teach and do research in discrete mathematics and belong to the research group graph theory.

About me

Head of the Division of Algebra, Geometry and Discrete Mathematics (ALGD). I teach and do research in discrete mathematics and belong to the research group graph theory.

Publications

2025

Carl Johan Casselgren, Michal Malafiejski, Krzysztof Pastuszak, Petros A. Petrosyan (2025) Near-interval edge colorings of graphs Discrete Applied Mathematics, Vol. 372, p. 23-36 (Article in journal) Continue to DOI
Carl Johan Casselgren, Mesfin Masre (2025) General degree-eccentricity index of unicyclic graphs of given order, girth and maximum degree Discrete Applied Mathematics, Vol. 368, p. 30-44 (Article in journal) Continue to DOI

2024

Carl Johan Casselgren (2024) Coloring Hypergraphs from Random Lists The Electronic Journal of Combinatorics, Vol. 31, Article P4.75 (Article in journal) Continue to DOI
Carl Johan Casselgren, Jonas Granholm, Fikre B. Petros (2024) Extending partial edge colorings of iterated cartesian products of cycles and paths Discrete Mathematics & Theoretical Computer Science, Vol. 26, Article 11377 (Article in journal) Continue to DOI
Carl Johan Casselgren, Fikre B. Petros, Samuel A. Fufa (2024) Extending partial edge colorings of Cartesian products of graphs Discussiones Mathematicae. Graph Theory (Article in journal) Continue to DOI

Research

A 3-edge-coloring of the Desargues graph. Created by: Koko90. CC BY-SA 3.0. https://en.wikipedia.org/wiki/Edge_coloring#/media/

Graph Theory

The research group in graph theory at Linköping University is primarily interested in classic graph theory with a particular focus on graph coloring and Hamiltonian graph theory.

Coworkers at Algebra, Geometry and Discrete Mathematics (ALGD)

Photo of Mats Aigner
Mats Aigner
Associate Professor
Photo of Fredrik Andersson
Fredrik Andersson
Associate Professor
Photo of Pelle Andersson
Pelle Andersson
PhD student
Photo of Joakim Arnlind
Joakim Arnlind
Head of Department, Professor
Photo of Armen Asratian
Armen Asratian
Professor Emeritus
Photo of Micaela Bergfors
Micaela Bergfors
Lecturer
Placeholder for missing image of Göran Bergqvist
Göran Bergqvist
Professor
Photo of Daniel Carlsson
Daniel Carlsson
Lecturer
Photo of Erik Darpö
Erik Darpö
Associate Professor
Photo of Jonna Gill
Jonna Gill
Lecturer
Photo of Magnus Herberthson
Magnus Herberthson
Professor
Photo of Victor Hildebrandsson
Victor Hildebrandsson
PhD student
Photo of Axel Hultman
Axel Hultman
Professor
Placeholder for missing image of Milagros Izquierdo
Milagros Izquierdo
Professor
Photo of Hans Lundmark
Hans Lundmark
Associate Professor, Docent
Photo of Jonathan Nilsson
Jonathan Nilsson
Associate Professor
Photo of Mika Norlén Jäderberg
Mika Norlén Jäderberg
PhD student
Placeholder for missing image of Stefan Rauch
Stefan Rauch
Professor Emeritus
Photo of Jan Snellman
Jan Snellman
Associate Professor, Docent
Photo of Jesper Thorén
Jesper Thorén
Deputy Head of Department, Associate Professor
Photo of Axel Tiger Norkvist
Axel Tiger Norkvist
Lecturer
Placeholder for missing image of Vitalij Tjatyrko
Vitalij Tjatyrko
Senior Associate Professor

Organisation

A tiling of the hyperbolic plane. CRED: By Claudio Rocchini - Own work, CC BY 2.5, https://commons.wikimedia.org/w/index.php?curid=1669501.

Algebra, Geometry and Discrete Mathematics (ALGD)

Our research focuses on a number of different subject areas such as algebra, geometry, topology, dynamic systems, combinatorics and graph theory. The division consists of about twenty teachers, researchers and doctoral students.
Fractal Plant

Department of Mathematics (MAI)

The department conducts research in computational mathematics, mathematics and applied mathematics, mathematical statistics, and optimization. We provide courses to students in most degree programmes in mathematics, science and engineering.
Studenthuset on Campus Valla in Linköping

About LiU

Linköping University, LiU, offers innovative education and boundary-crossing research. The students are among the most desirable in the labour market and international rankings consistently place LiU as a leading global university.

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