Results 91 to 100 of about 1,967 (126)

Adding an Edge in a Cograph

open access: yes, 2005
In this paper, we establish structural properties of cographs which enable us to present an algorithm which, for a cograph G and a non-edge xy (i.e., two non-adjacent vertices x and y) of G, finds the minimum number of edges that need to be added to the edge set of G such that the resulting graph is a cograph and contains the edge xy.
Nikolopoulos, S. D., Palios, L.
openaire   +2 more sources

Indirect identification of horizontal gene transfer. [PDF]

open access: yesJ Math Biol, 2021
Schaller D   +4 more
europepmc   +1 more source

Infinite cographs and chain complete N-free posets

open access: yes, 2018
We give a necessary and sufficient condition for a $P_4$-free graph to be a cograph. This allows us to obtain a simple proof of the fact that finite $P_4$-free graphs are finite cographs. We also prove that chain complete posets whose comparability graph
Zaguia, Imed
core  

Complete Characterization of Incorrect Orthology Assignments in Best Match Graphs. [PDF]

open access: yesJ Math Biol, 2021
Schaller D   +3 more
europepmc   +1 more source

Some spectral properties of cographs

open access: yesDiscrete Mathematics, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mohammadian, A., Trevisan, V.
openaire   +1 more source

Strong tree-cographs are birkhoff graphs

open access: yesDiscrete Applied Mathematics, 1988
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Best match graphs and reconciliation of gene trees with species trees. [PDF]

open access: yesJ Math Biol, 2020
Geiß M   +6 more
europepmc   +1 more source

On 3-Coloring of ( 2 P 4 , C 5 )-Free Graphs. [PDF]

open access: yesAlgorithmica, 2022
Jelínek V   +4 more
europepmc   +1 more source

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