Results 111 to 120 of about 2,666,039 (345)

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

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

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

Cyclic coloring of plane graphs

open access: yesDiscrete Mathematics, 1992
Let \(G\) be a plane graph, and let \(x_ k(G)\) be the minimum number of colors to color the vertices of \(G\) so that every two of them which lie in the boundary of the same face of the size at most \(k\), receive different colors. \textit{O. Ore} and \textit{M. D. Plummer} [Recent Progress Combin., Proc. 3rd Waterloo Conf.
openaire   +2 more sources

The critical role of DNA damage‐inducible transcript 4 (DDIT4) in stemness character of leukemia cells and leukemia initiation

open access: yesMolecular Oncology, EarlyView.
Stemness properties, including quiescence, self‐renewal, and chemoresistance, are closely associated with leukemia relapse. Here, we demonstrate that DNA damage‐inducible transcript 4 (DDIT4) is induced in the hypoxic bone marrow niche and is essential for maintaining the stemness of AML1‐ETO9a leukemia cells.
Yishuang Li   +12 more
wiley   +1 more source

A Note On Vertex Colorings Of Plane Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2014
Given an integer valued weighting of all elements of a 2-connected plane graph G with vertex set V , let c(v) denote the sum of the weight of v ∈ V and of the weights of all edges and all faces incident with v.
Fabricia Igor   +2 more
doaj   +1 more source

The Clique Problem in Ray Intersection Graphs

open access: yes, 2011
Ray intersection graphs are intersection graphs of rays, or halflines, in the plane. We show that any planar graph has an even subdivision whose complement is a ray intersection graph.
Cabello, Sergio   +2 more
core   +1 more source

Rook-Drawing for Plane Graphs [PDF]

open access: yes, 2015
Motivated by visualization of large graphs, we introduce a new type of graph drawing called "rook-drawing". A rook-drawing of a graph G is obtained by placing the n nodes of G on the intersections of a regular grid, such that each row and column of the grid supports exactly one node. This paper focuses on rook-drawings of planar graphs. We first give a
Auber, David   +3 more
openaire   +3 more sources

RKIP overexpression reduces lung adenocarcinoma aggressiveness and sensitizes cells to EGFR‐targeted therapies

open access: yesMolecular Oncology, EarlyView.
RKIP, a metastasis suppressor protein, modulates key oncogenic pathways in lung adenocarcinoma. In silico analyses linked low RKIP expression to poor survival. Functional studies revealed RKIP overexpression reduces tumor aggressiveness and enhances sensitivity to EGFR‐targeted therapies, while its loss promotes resistance.
Ana Raquel‐Cunha   +10 more
wiley   +1 more source

A note on face coloring entire weightings of plane graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2014
Given a weighting of all elements of a 2-connected plane graph G = (V,E, F), let f(α) denote the sum of the weights of the edges and vertices incident with the face _ and also the weight of _.
Jendrol Stanislav, Šugerek Peter
doaj   +1 more source

PARP inhibitors elicit distinct transcriptional programs in homologous recombination competent castration‐resistant prostate cancer

open access: yesMolecular Oncology, EarlyView.
PARP inhibitors are used to treat a small subset of prostate cancer patients. These studies reveal that PARP1 activity and expression are different between European American and African American prostate cancer tissue samples. Additionally, different PARP inhibitors cause unique and overlapping transcriptional changes, notably, p53 pathway upregulation.
Moriah L. Cunningham   +21 more
wiley   +1 more source

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