A new proof of the 6 color theorem
Journal of Graph Theory
Journal of the ACM (JACM)
Right angle crossing graphs and 1-planarity
Discrete Applied Mathematics
Parameterized complexity of 1-planarity
WADS'13 Proceedings of the 13th international conference on Algorithms and Data Structures
An upper bound on the sum of powers of the degrees of simple 1-planar graphs
Discrete Applied Mathematics
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A graph is called 1-planar if there exists its drawing in the plane such that each edge is crossed at most once. We present the full characterization of 1-planar complete k-partite graphs.