3 citations · 5 across the 4 of their papers we have counts for
4 papers
4-critical wheel graphs of higher order
Dainis Zeps
4-critical wheel graphs of higher order are considered concerning their belonging to free-planar or free-Hadwiger classes.
Combinatorial Maps with Normalized Knot
Dainis Zeps
We consider combinatorial maps with fixed combinatorial knot numbered with augmenting numeration called normalized knot. We show that knot's normalization doesn't affect combinator…
Free Minor Closed Classes and the Kuratowski theorem
Dainis Zeps
Free-minor closed classes [2] and free-planar graphs [3] are considered. Versions of Kuratowski-like theorem for free-planar graphs and Kuratowski theorem for planar graphs are con…
Graphs as rotations
Dainis Zeps
Using a notation of corner between edges when graph has a fixed rotation, i.e. cyclical order of edges around vertices, we define combinatorial objects - combinatorial maps as pair…