Bart Litjens

activity

20162019

most citedSemidefinite bounds for nonbinary codes based on quadruples

26 citations · 50 across the 7 of their papers we have counts for

collaborators

Showing 2018Show all

2 papers · 1 filter

math.CO2018

A Tutte polynomial for maps II: the non-orientable case

Andrew Goodall, Bart Litjens, Guus Regts +1

We construct a new polynomial invariant of maps (graphs embedded in a compact surface, orientable or non-orientable), which contains as specializations the Krushkal polynomial, the…

math.CO2018★ 3 cited

On the circular chromatic number of a subgraph of the Kneser graph

Bart Litjens, Sven Polak, Bart Sevenster +1

Let $n, k, r$ be positive integers with $n \geq r k$ and $r \geq 2$ . Consider a circle $C$ with~ $n$ points~ $1, \dots, n$ in clockwise order. The $r$ -stable \emph{interlacing graph} $\t…