Home page of Bart Litjens

I am a Credit Risk Modeller at the Rabobank, located in Utrecht.

Previously I worked as a mathematician. I obtained my PhD under the supervision of Alexander Schrijver at the University of Amsterdam (February 2019). My thesis, entitled Applications of Representation Theory in Discrete Mathematics, may be found here.

Contact information

bart dot litjens at rabobank dot nl

Writing

Preprints

-B.M. Litjens, S.C. Polak, B.L. Sevenster and L. Vena, On the circular chromatic number of a subgraph of the Kneser graph. (2018; preprint arXiv:1803.04342)

Published

-A.J. Goodall, B.M. Litjens, G. Regts and L. Vena, Tutte's dichromate for signed graphs. Discrete Applied Mathematics, 289 (2021), 153-184. Journal, arXiv:1903.07548

-A.J. Goodall, B.M. Litjens, G. Regts and L. Vena, A Tutte polynomial for maps II: the non-orientable case. European Journal of Combinatorics, 87 (2020) 103095. Journal, arXiv:1804.01496

-B.M. Litjens, On dihedral flows in embedded graphs. Journal of Graph Theory, 91(2) (2019), 174-191. Journal, arXiv:1709.06469

-B.M. Litjens, S.C. Polak and V. Sivaraman, Sum-perfect graphs. Discrete Applied Mathematics, 259 (2019), 232-239. Journal, arXiv:1710.07546

-B.M. Litjens and B.L. Sevenster, Partition functions and a generalized coloring-flow duality for embedded graphs. Journal of Graph Theory, 88 (2) (2018), 271-283. Journal, arXiv:1701.00420

-B.M. Litjens, Semidefinite bounds for mixed binary/ternary codes. Discrete Mathematics, 341 (6) (2018), 1740-1748. Journal, arXiv:1606.06930

-B.M. Litjens, S.C. Polak and A. Schrijver, Semidefinite bounds for nonbinary codes based on quadruples. Designs, Codes and Cryptography, 84 (1) (2017), 87-100. Journal, arXiv:1602.02531

Refereed conference proceedings

-A.J. Goodall, B.M. Litjens, G. Regts and L. Vena, The canonical Tutte polynomial for signed graphs. Acta Mathematica Universitatis Comenianae , 88 (2019), 749-754 Journal

-B.M. Litjens, S.C. Polak, B.L. Sevenster and L. Vena, On the chromatic number of a subgraph of the Kneser graph. Electronic Notes in Discrete Mathematics, 68 (2018), 227-232 Journal

-A.J. Goodall, B.M. Litjens, G. Regts and L. Vena, A Tutte polynomial for non-orientable maps. Electronic Notes in Discrete Mathematics, 61 (2017), 513-510 Journal

Thesis

PhD thesis

My master thesis, titled `Good reduction of abelian varieties', was written under the supervision of Gerard van der Geer.

arXiv · Google scholar · ORCID · ResearchGate ·