Concept
Coxeter graph
Related publications (4)
Stability results for vertex Turatn problems in Kneser graphs
The vertex set of the Kneser graph K(n, k) is V = (([n])(k)) and two vertices are adjacent if the corresponding sets are disjoint. For any graph F, the largest size of a vertex set U subset of V such that K(n, k)[U] is F-free, was recently determined by Al ...
ELECTRONIC JOURNAL OF COMBINATORICS2019Approximating the rectilinear crossing number
A straight-line drawing of a graph G is a mapping which assigns to each vertex a point in the plane and to each edge a straight-line segment connecting the corresponding two points. The rectilinear crossing number of a graph G, (cr) over bar (G), is the mi ...
2019On random subgraphs of Kneser and Schrijver graphs
A Kneser graph KG(n,k) is a graph whose vertices are in oneto-one correspondence with k -element subsets of [n], with two vertices connected if and only if the corresponding sets do not intersect. A famous result due to Lowisz states that the chromatic num ...
Academic Press Inc Elsevier Science2016Node-weighted network design and maximum sub-determinants
We consider the Node-weighted Steiner Forest problem on planar graphs. Demaine et al. showed that a generic primal-dual algorithm gives a 6-approximation. We present two different proofs of an approximation factor of~. Then, we draw a connection to Goem ...
EPFL2014