[PDF][PDF] Interval graphs and proper interval graphs in fuzzy and neutrosophic graphs

T Fujita - Preprint, July, 2024 - researchgate.net
Interval graphs represent vertices as intervals on the real line, with edges denoting
overlapping intervals, while proper interval graphs prevent one interval from being fully …

Triangle contact representations and duality

D Gonçalves, B Lévêque, A Pinlou - Discrete & Computational Geometry, 2012 - Springer
A contact representation by triangles of a graph is a set of triangles in the plane such that
two triangles intersect on at most one point, each triangle represents a vertex of the graph …

Contact representations of planar graphs with cubes

S Felsner, MC Francis - Proceedings of the twenty-seventh annual …, 2011 - dl.acm.org
We prove that every planar graph has a representation using axis-parallel cubes in three
dimensions in such a way that there is a cube corresponding to each vertex of the planar …

Schnyder woods and orthogonal surfaces

S Felsner, F Zickfeld - Discrete & Computational Geometry, 2008 - Springer
In this paper we study connections between planar graphs, Schnyder woods, and
orthogonal surfaces. Schnyder woods and the face counting approach have important …

Contact representations of graphs in 3D

J Alam, W Evans, S Kobourov, S Pupyrev… - Algorithms and Data …, 2015 - Springer
We study contact representations of non-planar graphs in which vertices are represented by
axis-aligned polyhedra in 3D and edges are realized by non-zero area common boundaries …

Proportional contact representations of planar graphs

MJ Alam, T Biedl, S Felsner, M Kaufmann… - Graph Drawing: 19th …, 2012 - Springer
We study contact representations for planar graphs, with vertices represented by simple
polygons and adjacencies represented by point-contacts or side-contacts between the …

On representing graphs by touching cuboids

D Bremner, W Evans, F Frati, L Heyer… - Graph Drawing: 20th …, 2013 - Springer
We consider contact representations of graphs where vertices are represented by cuboids,
ie interior-disjoint axis-aligned boxes in 3D space. Edges are represented by a proper …

A note on planar partial 3-trees

J Kratochvíl, M Vaner - arXiv preprint arXiv:1210.8113, 2012 - arxiv.org
It implicitly follows from the work of [Colbourn, El-Mallah: On two dual classes of planar
graphs. Discrete Mathematics 80 (1): 21-40 (1990)] that every planar partial 3-tree is a …

Contact graphs of circular arcs

MJ Alam, D Eppstein, M Kaufmann… - Algorithms and Data …, 2015 - Springer
We study representations of graphs by contacts of circular arcs, CCA-representations for
short, where the vertices are interior-disjoint circular arcs in the plane and each edge is …

Balanced circle packings for planar graphs

MJ Alam, D Eppstein, MT Goodrich… - Graph Drawing: 22nd …, 2014 - Springer
We study balanced circle packings and circle-contact representations for planar graphs,
where the ratio of the largest circle's diameter to the smallest circle's diameter is polynomial …