Results 1 to 10 of about 2,185 (129)

Geometric Biplane Graphs II: Graph Augmentation [PDF]

open access: yesGraphs and Combinatorics, 2015
We study biplane graphs drawn on a finite point set $S$ in the plane in general position. This is the family of geometric graphs whose vertex set is $S$ and which can be decomposed into two plane graphs. We show that every sufficiently large point set admits a 5-connected biplane graph and that there are arbitrarily large point sets that do not admit ...
Hurtado Díaz, Fernando Alfredo   +7 more
openaire   +9 more sources

Geometric Biplane Graphs I: Maximal Graphs [PDF]

open access: yesGraphs and Combinatorics, 2015
We study biplane graphs drawn on a finite planar point set $S$ in general position. This is the family of geometric graphs whose vertex set is $S$ and can be decomposed into two plane graphs. We show that two maximal biplane graphs---in the sense that no edge can be added while staying biplane---may differ in the number of edges, and we provide an ...
Garcia Olaverri, Alfredo Martin   +7 more
openaire   +9 more sources

Spectral characterization of a graph on the flags of the eleven point biplane [PDF]

open access: yesDesigns, Codes and Cryptography, 2011
We characterize a 55-point graph by its spectrum $ 4^1, (-2)^{10}, (-1 \pm \sqrt{3})^{10}, ((3 \pm \sqrt{5})/2)^{12} $. No interlacing is used: examination of tr A^m for m = 7 together with study of the representation in the eigenspace for the eigenvalue -2 suffices.
Blokhuis, A., Brouwer, A.E.
openaire   +2 more sources

3D reconstruction of coronary artery bifurcations from intravascular ultrasound and angiography. [PDF]

open access: yesSci Rep, 2023
Wu W   +10 more
europepmc   +1 more source

A machine learning-based score for precise echocardiographic assessment of cardiac remodelling in hypertensive young adults. [PDF]

open access: yesEur Heart J Imaging Methods Pract, 2023
Alsharqi M   +12 more
europepmc   +1 more source

Prognostic value of <sup>68</sup>Ga-DOTATATE PET/CT in assessing cardiac involvement in autoimmune diseases: a prospective study. [PDF]

open access: yesFront Cardiovasc Med
Lin X   +9 more
europepmc   +1 more source

Right Atrial Contraction Strain Is Associated With Clinically Significant Cellular Rejection in Patients After Heart Transplantation. [PDF]

open access: yesTranspl Int
Rieth AJ   +8 more
europepmc   +1 more source

Home - About - Disclaimer - Privacy