Results 91 to 100 of about 391,866 (285)

Odd facial total-coloring of unicyclic plane graphs [PDF]

open access: yesDiscrete Mathematics Letters, 2022
Július Czap
doaj   +1 more source

Graphs embedded into finite projective planes

open access: yesContributions to Discrete Mathematics, 2015
We study embeddings of graphs in finite projective planes, and present related results for some families of graphs including complete graphs and complete bipartite graphs. We also make connections between embeddings of graphs and the existence of certain substructures in a plane, such as Baer subplanes and arcs.
Mellinger, Keith   +2 more
openaire   +2 more sources

Correlation of the differential expression of PIK3R1 and its spliced variant, p55α, in pan‐cancer

open access: yesMolecular Oncology, EarlyView.
PIK3R1 undergoes alternative splicing to generate the isoforms, p85α and p55α. By combining large patient datasets with laboratory experiments, we show that PIK3R1 spliced variants shape cancer behavior. While tumors lose the protective p85α isoform, p55α is overexpressed, changes linked to poorer survival and more pronounced in African American ...
Ishita Gupta   +10 more
wiley   +1 more source

Maximal NIC-plane graphs

open access: yesDiscrete Mathematics, Algorithms and Applications
A graph is called NIC-planar if it admits a drawing in the plane such that each edge is crossed at most once and two pairs of crossing edges share at most one vertex. A graph together with a NIC-planar drawing is a  NIC-plane graph. A graph is maximal  NIC-planar or NIC-plane, if we cannot add any missing edge so that the resulting graph is still NIC ...
Ding, Zongpeng   +2 more
openaire   +3 more sources

From Tutte to Floater and Gotsman: On the Resolution of Planar Straight-line Drawings and Morphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science
The algorithm of Tutte for constructing convex planar straight-line drawings and the algorithm of Floater and Gotsman for constructing planar straight-line morphs are among the most popular graph drawing algorithms.
Giuseppe Di Battista, Fabrizio Frati
doaj   +1 more source

Chord Diagrams and Gauss Codes for Graphs [PDF]

open access: yes, 2006
Chord diagrams on circles and their intersection graphs (also known as circle graphs) have been intensively studied, and have many applications to the study of knots and knot invariants, among others.
Fleming, Thomas, Mellor, Blake
core   +3 more sources

Minor stars in plane graphs with minimum degree five

open access: yes, 2018
The weight of a subgraph $H$ in $G$ is the sum of the degrees in $G$ of vertices of $H$. The {\em height} of a subgraph $H$ in $G$ is the maximum degree of vertices of $H$ in $G$.
Li, Yangfan, Rao, Mengjiao, Wang, Tao
core   +1 more source

Circular RNA expression landscapes in myelodysplastic neoplasms: Associations with mutational signatures and disease progression

open access: yesMolecular Oncology, EarlyView.
In this explorative study, the abundance of circular RNA molecules in bone marrow stem cells was found to be elevated in patients with high‐risk myelodysplastic neoplasms, and to be associated with an increased risk of progression to acute myeloid leukemia.
Eileen Wedge   +17 more
wiley   +1 more source

The total face irregularity strength of some plane graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
A face irregular total -labeling of a 2-connected plane graph is a labeling of vertices and edges such that their face-weights are pairwise distinct. The weight of a face under a labeling is the sum of the labels of all vertices and edges surrounding ...
Meilin I. Tilukay   +3 more
doaj   +1 more source

The space of complete embedded maximal surfaces with isolated singularities in the 3-dimensional Lorentz-Minkowski space $\l^3$

open access: yes, 2005
We show that a complete embedded maximal surface in the 3-dimensional Lorentz-Minkowski space $L^3$ with a finite number of singularities is, up to a Lorentzian isometry, an entire graph over any spacelike plane asymptotic to a vertical half catenoid or ...
Fernandez, Isabel   +2 more
core   +1 more source

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