Results 31 to 40 of about 272,456 (331)

Topological dynamics indexed by words

open access: yesTopology and its Applications, 2012
20 ...
Farmaki, V., Koutsogiannis, A.
openaire   +3 more sources

Topological properties of Graphene using some novel neighborhood degree-based topological indices

open access: yesInternational Journal of Mathematics for Industry, 2019
Topological indices are numeric quantities that transform chemical structure to real number. Topological indices are used in QSAR/QSPR studies to correlate the bioactivity and physiochemical properties of molecule.
Sourav Mondal, Nilanjan De, Anita Pal
doaj   +1 more source

Some Topological Invariants of Graphs Associated with the Group of Symmetries

open access: yesJournal of Chemistry, 2020
A topological index is a quantity that is somehow calculated from a graph (molecular structure), which reflects relevant structural features of the underlying molecule.
Chang-Cheng Wei   +6 more
doaj   +1 more source

A Numerical Study of Spectral Flows of Hermitian Wilson-Dirac Operator and the Index Theorem in Abelian Gauge Theories on Finite Lattices [PDF]

open access: yes, 2000
We investigate the index of the Neuberger's Dirac operator in abelian gauge theories on finite lattices by numerically analyzing the spectrum of the hermitian Wilson-Dirac operator for a continuous family of gauge fields connecting different topological ...
Fujiwara, T.
core   +2 more sources

Eccentric topological properties of a graph associated to a finite dimensional vector space

open access: yesMain Group Metal Chemistry, 2020
A topological index is actually designed by transforming a chemical structure into a number. Topological index is a graph invariant which characterizes the topology of the graph and remains invariant under graph automorphism.
Liu Jia-Bao   +5 more
doaj   +1 more source

Solitary Waves in Massive Nonlinear S^N-Sigma Models [PDF]

open access: yes, 2010
The solitary waves of massive (1+1)-dimensional nonlinear S^N-sigma models are unveiled. It is shown that the solitary waves in these systems are in one-to-one correspondence with the separatrix trajectories in the repulsive N-dimensional Neumann ...
Izquierdo, A. Alonso   +2 more
core   +5 more sources

Computation of Several Banhatti and Reven Invariants of Silicon Carbides

open access: yesمجلة بغداد للعلوم, 2023
Expressions for the molecular topological features of silicon carbide compounds are essential for quantitative structure-property and structure-activity interactions.
Abid Mahboob   +3 more
doaj   +1 more source

Mostar Index of Cycle-Related Structures

open access: yesJournal of Chemistry, 2022
A topological index is a numerical quantity associated with the molecular structure of a chemical compound. This number remains fixed with respect to the symmetry of a molecular graph.
Fatima Asif   +3 more
doaj   +1 more source

Mathematical aspects and topological properties of two chemical networks

open access: yesAIMS Mathematics, 2023
Graphs give a mathematical model of molecules, and thery are used extensively in chemical investigation. Strategically selections of graph invariants (formerly called "topological indices" or "molecular descriptors") are used in the mathematical modeling
Ali Al Khabyah
doaj   +1 more source

Topological Interference Management Through Index Coding [PDF]

open access: yesIEEE Transactions on Information Theory, 2014
This work studies linear interference networks, both wired and wireless, with no channel state information at the transmitters (CSIT) except a coarse knowledge of the end-to-end one-hop topology of the network that only allows a distinction between weak (zero) and significant (non-zero) channels and no further knowledge of the channel coefficients ...
openaire   +3 more sources

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