Results 51 to 60 of about 8,535,805 (358)

On Relationships of Eigenvalue–Based Topological Molecular Descriptors

open access: yesActa Chimica Slovenica, 2020
Three eigenvalue-based topological molecular descriptors are compared using several datasets of alkanes. Two of them are well-known and frequently employed in various QSPR/QSAR investigations, and third-one is a newly derived whose predictive potential ...
Izudin Redžepović, Boris Furtula
doaj   +1 more source

Heterotic-string amplitudes at one loop: modular graph forms and relations to open strings [PDF]

open access: yes, 2019
We investigate one-loop four-point scattering of non-abelian gauge bosons in heterotic string theory and identify new connections with the corresponding open-string amplitude.
Gerken, Jan E.   +2 more
core   +3 more sources

Defect graph neural networks for materials discovery in high-temperature clean-energy applications

open access: yesNature Computational Science, 2023
We present a graph neural network approach that fully automates the prediction of defect formation enthalpies for any crystallographic site from the ideal crystal structure, without the need to create defected atomic structure models as input.
M. Witman   +4 more
semanticscholar   +1 more source

On Laplacian resolvent energy of graphs [PDF]

open access: yesTransactions on Combinatorics, 2023
Let $G$ be a simple connected graph of order $n$ and size $m$. The matrix $L(G)=D(G)-A(G)$ is the Laplacian matrix of $G$, where $D(G)$ and $A(G)$ are the degree diagonal matrix and the adjacency matrix, respectively. For the graph $G$, let $d_{1}\geq d_{
Sandeep Bhatnagar   +2 more
doaj   +1 more source

Remarks on the energy of regular graphs

open access: yes, 2016
The energy of a graph is the sum of the absolute values of the eigenvalues of its adjacency matrix. This note is about the energy of regular graphs. It is shown that graphs that are close to regular can be made regular with a negligible change of the ...
Nikiforov, V.
core   +1 more source

Impact of graph energy on a measurement of resilience for tipping points in complex systems

open access: yesSystems Engineering
Societies depend on various complex and highly interconnected systems, leading to increasing interest in methods for managing the resilience of these complex systems and the risks associated with their disruption or failure.
Christine M. Edwards   +2 more
semanticscholar   +1 more source

Mobius Energy of Graphs

open access: yesMathematical Notes, 2006
In the present paper we introduce Mobius energy for the embedded graphs and formulate its main properties. This energy is invariant under the action of the group generated by all inversions in three-dimensional real space. We study critical configurations for the angles at vertices of degree less than five, and discuss the techniques of construction of
openaire   +3 more sources

The graph energy game

open access: yesDiscrete Applied Mathematics, 2023
We study the graph energy from a cooperative game viewpoint. We introduce \emph{the graph energy game} and show various properties. In particular, we see that it is a superadditive game and that the energy of a vertex, as defined in Arizmendi and Juarez-Romero (2018), belongs to the core of the game.
Arizmendi, Gerardo, Arizmendi, Octavio
openaire   +2 more sources

Energy-based Analysis of Biochemical Cycles using Bond Graphs [PDF]

open access: yes, 2014
Thermodynamic aspects of chemical reactions have a long history in the Physical Chemistry literature. In particular, biochemical cycles - the building-blocks of biochemical systems - require a source of energy to function.
Crampin, Edmund J., Gawthrop, Peter J.
core   +1 more source

Certain Energies of Graphs for Dutch Windmill and Double-Wheel Graphs

open access: yesJournal of Mathematics, 2022
Energy of a graph is defined as the sum of the absolute values of the eigenvalues of the adjacency matrix associated with the graph. In this research work, we find color energy, distance energy, Laplacian energy, and Seidel energy for the Dutch windmill ...
Jing Wu   +3 more
doaj   +1 more source

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