Results 41 to 50 of about 34,352 (308)

On the ρ-Edge Stability Number of Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2022
For an arbitrary invariant ρ(G) of a graph G the ρ-edge stability number esρ(G) is the minimum number of edges of G whose removal results in a graph H ⊆ G with ρ(H) ≠ ρ(G) or with E(H) = ∅.
Kemnitz Arnfried, Marangio Massimiliano
doaj   +1 more source

Classifying textile designs using region graphs [PDF]

open access: yes, 2010
Markov random field pixel labelling is often used to obtain image segmentations in which each segment or region is labelled according to its attributes such as colour or texture.
Edwards, Keith   +7 more
core   +1 more source

Second Hyper Zagreb Spectral Radii of Graph Operations

open access: yesScientific Annals of Computer Science
Chemical graph theory is essential for deriving graph spectral radius, especially in quantum chemistry; a significant link exists between eigenvalues and this invariant of spectral graph theory.
Ahmad Bilal, Muhammad Mobeen Munir
doaj   +1 more source

Continuous Orbit Equivalence on Self-Similar Graph Actions

open access: yesMathematics, 2019
For self-similar graph actions, we show that isomorphic inverse semigroups associated to a self-similar graph action are a complete invariant for the continuous orbit equivalence of inverse semigroup actions on infinite path spaces.
Inhyeop Yi
doaj   +1 more source

Extremum Modified First Zagreb Connection Index of n-Vertex Trees with Fixed Number of Pendent Vertices

open access: yesDiscrete Dynamics in Nature and Society, 2020
The modified first Zagreb connection index ZC1∗ is a graph invariant that appeared about fifty years ago within a study of molecular modeling, and after a long time, it has been revisited in two papers ((Ali and Trinajstić, 2018) and (Naji et al., 2017))
Sadia Noureen   +2 more
doaj   +1 more source

The odd–even invariant for graphs

open access: yesEuropean Journal of Combinatorics, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Richard Eager, Jim Lawrence
openaire   +2 more sources

On a Hierarchy of Spectral Invariants for Graphs

open access: yes, 2023
32 pages, 1 diagram, 1 figure. A preliminary version of this paper appeared in the Proceedings of the 41st International Symposium on Theoretical Aspects of Computer Science (STACS'24), published in LIPIcs Vol.
Vikraman Arvind   +3 more
openaire   +4 more sources

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

open access: yesFEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi   +5 more
wiley   +1 more source

Semi-equivariant conditional normalizing flows, with applications to target-aware molecule generation

open access: yesMachine Learning: Science and Technology, 2023
Learning over the domain of 3D graphs has applications in a number of scientific and engineering disciplines, including molecular chemistry, high energy physics, and computer vision.
Eyal Rozenberg, Daniel Freedman
doaj   +1 more source

Dilation theory for rank two graph algebras. [PDF]

open access: yes, 2010
An analysis is given of $*$-representations of rank 2 single vertex graphs. We develop dilation theory for the non-selfadjoint algebras $\A_\theta$ and $\A_u$ which are associated with the commutation relation permutation $\theta$ of a 2-graph and, more ...
Yang, Dilian   +2 more
core  

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