Bjarne Toft

ph.d. (London 1970)

  • Campusvej 55

    5230 Odense M

    Denmark

1992 …2019
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Personal profile

Curriculum

CV Bjarne Toft 2019

Born 30.04.1945 in Thisted, Denmark.
Married 1975 to Bente Østergaard Toft (high school teacher in social science and German, now retired).
Children: Tomas 1977 (Ph.d. in computer science, postdoc at Aarhus University and now in The Danish Bank) and Peter 1985 (MA in English and Media Science – stay in San Diego as part of his final masters project in winter 2013, now high school teacher in Ringe, Denmark).
Associate professor at Odense University (now the University of Southern Denmark SDU) since 1974.

Emeritus from September 2015.

EDUCATION
High school diploma 1963.
M.Sc. in mathematics and physics, Aarhus University 1968 (thesis in graph theory with G.A. Dirac as supervisor). Stipend from Aarhus University 1968-1970. Research stays at the University of Wales (1968), the
Hungarian Academy of Science (1969) and at Birkbeck College, University of London (1969 and 1970).
Ph.D. University of London 1970 (supervisors H. Dowker and G.A. Dirac, external examiner C.A.B. Smith).
Assistant professor, Aarhus University 1970-1973. Postdoc, University of Waterloo, Canada, 1973.

RESEARCH
Guest professor, University of Regina, Canada, 1985 (6 months) and 1993-1994 (12 months).
Guest profe ssor, Vanderbilt University, USA, 1986 (6 months) and 2001 (6 months).
Guest researcher, London School of Economics, England, 2011 (4 months).
Visiting scholar, Human Sciences and Technology Advanced Researh Institute, Stanford University, USA, 2013 (3 months).


Author of around 70 papers (Studia Sci. Math. Hungar., J.Reine und Angew. Math., Monatshefte für Mathematik, Mathematische Annalen, Journal Comb. Theory B, Combinatorica, Discrete Math., Journal of Graph Theory, Ars Combinatoria). Co-author with Tommy Jensen of the book Graph Coloring Problems (Wiley 1995). Co-author with Stiebitz, Scheide, Favrholdt of the book Graph Edge Coloring (Wiley 2012). Editor and co-editor of conference proceedings.


Conference lectures (Canada, England, France, Russia, Czech Republic, Germany, Hungary, USA, Japan, Spain, Finland, China, Slovakia, Malta). Conference lectures in 2008-2018: AMS and MAA Joint Meeting, San Diego, January 2008; Cumberland Meeting, Nashville, May 2008; RIMS Winter School on Graphs and Algorithms, Kyoto, Japan, December 2008), Pretty Structures, Paris, April 2009, Algebraic Graph Theory, Dubrovnik, June 2009, Bordeaux Graph Workshop, Nov. 2011, Cycles in Graphs, Nashville, May 2012. In the summer of 2013 three invited talks at conferences (Budapest, Kosice, Tokyo). ESU7 Copenhagen July 2014, One-day meeting in Paris for Adrian Bondy, November 2014, Talks and session organizer at the centenary for DMV 2015 in Hamburg and the centenary for the Mittag-Leffler Institute in Stockholm (27. Nordic Congress, March 2016), Scandinavian Combinatorial Congress in Levi, Finland, June 2016, Cycles and Colourings, Slovakia September 2016, International Conference at Zhejiang Normal University, China, October 2016, Boardgame Conference in Copenhagen, May 2017, Second Malta Conference in Graph Theory and Combinatorics, June 2017, AMS meeting at Vanderbilt University, April 2018. Speaker at Board Game Colloquium XXII (Bologna, May 2019) and invited speaker at CID Colourings, Independence and Domination 2019 (Poland, September 2019).

Member of evaluation committees (Denmark, Sweden, Germany, Canada). Organizer/co-organizer of international meetings in Denmark, in particular Graph Theory in Memory of G.A. Dirac (Sandbjerg 1985), The Julius Petersen Conference (Hindsgavl 1990), Graph Theory Days at Dalum (1999), Graph Theory at Nyborg Strand (2000), Graph Theory 2002, Graph Theory 2003, Graph Theory 2005, Graph Theory 2008 at Sandbjerg Manor in honour of Carsten Thomassen, Graph Theory 2009, Graph Theory Workshop Denmark Germany Japan, Sept. 2009, Graph Theory 2011, Graph Theory 2012, Graph Theory 2015, Graph Theory 2018 and of NORCOM20 19 (Copenhagen, August 2019).
Member of the editorial board of Journal of Graph Theory.

ADMINISTRATION, TEACHING, POPULARIZATION
Member of a variety of administrative bodies, among them the mathematics library committee, chairman of the committee for the joint degree in mathematics and economy at SDU (1985-2015) and the governing board of the Danish Mathematical Society (2008-2016).
President of the Danish Mathematical Society (2013-2016).
Teacher of a variety of university mathematics courses, ranging from first year calculus to specialized courses, thesis advisor for more than 40 M.Sc.-students and for 3 Ph.D. students.

Popular lectures in a variety of connections, from a Royal Library lecture at the Golden Days in Copenhagen Festival (on natural science and the “modern breakthrough” in Denmark), a lecture in Alliance Francaise (on the group OULIPO), to a lecture for long term inmates at Nyborg State Prison (on lotto). Several lectures for UNF and in schools. Typical topics: the history of mathematics, optimization, mathematics and games, mathematics and economy, nonsense (Alice in Wonderland, etc.). Author of the book Algoritmisk Kombinatorik – et datalogisk orienteret emne I matematik (Dansk Matematisk Forening 1985). Co-autor of the book PIET HEIN VERDENSDANSKEREN (Gyldendal 2015). Co-author of the book HEX – the full story (Taylor&Francis 2019). Underviser og planlægger af fælles uddannelsesdag for matematiklærere i Fåborg-Midtfyn Kommune (februar 2019). Organizer of public meetings Gathering4Gardner 2014-2017. Curator of a collection of vintage computers at SDU.

Fingerprint Dive into the research topics where Bjarne Toft is active. These topic labels come from the works of this person. Together they form a unique fingerprint.

  • 4 Similar Profiles
Edge Coloring Mathematics
Graph in graph theory Mathematics
Edge-connectivity Mathematics
Independence number Mathematics
Graph Coloring Mathematics
Theorem Mathematics
Colouring Mathematics
Interval Mathematics

Network Recent external collaboration on country level. Dive into details by clicking on the dots.

Research Output 1992 2019

Graph Edge Coloring: A Survey

Cao, Y., Chen, G., Jing, G., Stiebitz, M. & Toft, B., Jan 2019, In : Graphs and Combinatorics. 35, 1, p. 33-66

Research output: Contribution to journalJournal articleResearchpeer-review

Edge Coloring
Graph Coloring

HEX The Full Story

Toft, B. & Hayward, R. B., 2019, Boca Raton: CRC Press. 297 p.

Research output: Book/anthology/thesis/reportBookCommunication

A Brooks type theorem for the maximum local edge connectivity

Stiebitz, M. & Toft, B., 2018, In : The Electronic Journal of Combinatorics. 25, 1, 11 p., #P1.50.

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
Edge-connectivity
Graph in graph theory
Theorem
Chromatic number
Paul Adrien Maurice Dirac

On interval and cyclic interval edge colorings of (3,5)-biregular graphs

Casselgren, C. J., Petrosyan, P. & Toft, B., 2017, In : Discrete Mathematics. 340, 11, p. 2678-2687

Research output: Contribution to journalJournal articleResearchpeer-review

Edge Coloring
Coloring
Colouring
Interval
Graph in graph theory
170 Downloads (Pure)

Decomposable and indecomposable critical hypergraphs

Stiebitz, M., Storch, P. & Toft, B., 2016, In : Journal of Combinatorics (Somerville). 7, 2-3, p. 423-451

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File

Activities 2000 2019

Brætspilsdag på Ubby Bibliotek

Bjarne Toft (Panel member)
9. Feb 2019

Activity: Attending an eventOrganisation or participation in workshops, courses or seminars

Fælles Uddannelsesdag

Bjarne Toft (Guest lecturer)
4. Feb 2019

Activity: Talks and presentationsGuest lectures, external teaching and course activities at other universities

Nonsens and Mathematics

Bjarne Toft (Lecturer)
9. Nov 2018

Activity: Talks and presentationsTalks and presentations in private or public companies

Alice i Eventyrland

Bjarne Toft (Guest lecturer)
8. Oct 2018

Activity: Talks and presentationsTalks and presentations in private or public companies

Alice i Eventyrland

Bjarne Toft (Lecturer)
5. Oct 2018

Activity: Talks and presentationsTalks and presentations in private or public companies

Projects 2011 2013

Press / Media

Efterskole deltog i Forskningens Døgn

Bjarne Toft

08/05/2018

1 Media contribution

Press/Media: Press / Media

Forskningens Døgn med hjerte, matematik og nonsens på skemaet

Bjarne Toft

01/05/2018

1 Media contribution

Press/Media: Press / Media

forskningens døgn med hjerte, matematik og nonsens på skemaet

Bjarne Toft

01/05/2018

1 Media contribution

Press/Media: Press / Media

Forskningens Døgn med hjerte, matematik og nonsens på skemaet

Bjarne Toft

01/05/2018

1 Media contribution

Press/Media: Press / Media

Baglandet glæder sig til letbanen. Mere miljø - mindre støj og møg

Bjarne Toft

14/02/2018

1 Media contribution

Press/Media: Press / Media

Prizes

Modtager af Per Andersen Prisen 2013

Bjarne Toft (Recipient), 28. Jun 2013

Prize: Prizes, scholarships, distinctions