Results 31 to 40 of about 1,818 (187)
The Wiener polarity index of benzenoid systems and nanotubes [PDF]
, 2017 In this paper, we consider a molecular descriptor called the Wiener polarity index, which is defined as the number of unordered pairs of vertices at distance three in a graph.
Tratnik, Niko
core +3 more sources
QUANTUM ASPECTS OF 2+1 GRAVITY [PDF]
, 1995 We review and systematize recent attempts to canonically quantize general relativity in 2+1 dimensions, defined on space-times $\R\times\Sigma^g$, where $\Sigma^g$ is a compact Riemann surface of genus $g$.
Okai T., R. Loll
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ADM approach to 2+1 dimensional gravity coupled to particles [PDF]
, 1999 We develop the canonical ADM approach to 2+1 dimensional gravity in presence of point particles. The instantaneous York gauge can be applied for open universes or universes with the topology of the sphere.
't Hooft +20 more
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The Hosoya polynomial of double weighted graphs
Ars Mathematica Contemporanea, 2018 Summary: The modified Hosoya polynomial of double weighted graphs, i.e. edge and vertex weighted graphs, is introduced that enables derivation of closed expressions for Hosoya polynomial of some special graphs including unicyclic graphs. Furthermore, the Hosoya polynomial is given as a sum of edge contributions generalizing well known analogous results
Novak, Tina +2 more
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Hosoya Polynomial, Wiener Index, Coloring and Planar of Annihilator Graph of Zn [PDF]
Al-Rafidain Journal of Computer Sciences and Mathematics, 2020 Let R be a commutative ring with identity. We consider ΓB(R) an annihilator graph of the commutative ring R. In this paper, we find Hosoya polynomial, Wiener index, Coloring, and Planar annihilator graph of Zn denote ΓB(Zn) , with n= pm or n=pmq, where p,
Mohammed Ahmed +2 more
doaj +1 more source
Weak values are universal in von Neumann measurements [PDF]
, 2012 We refute the widely held belief that the quantum weak value necessarily pertains to weak measurements. To accomplish this, we use the transverse position of a beam as the detector for the conditioned von Neumann measurement of a system observable.
Andrew N. Jordan +2 more
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Results in Control and Optimization, 2023 Water is one of the main constituents on earth for a living. The Advection Diffusion Equation (ADE) serves as an essential water standard model in environmental engineering since water pollution seriously threatens all life.
Kumbinarasaiah S., Nirmala A.N.
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Hosoya and Harary Polynomials of Hourglass and Rhombic Benzenoid Systems
Journal of Chemistry, 2020 In the fields of chemical graph theory, topological index is a type of a molecular descriptor that is calculated based on the graph of a chemical compound.
Zhong-Lin Cheng +4 more
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The n-Hosoya Polynomial of 𝑊𝛼⊠ Cβ [PDF]
Al-Rafidain Journal of Computer Sciences and Mathematics, 2012 For a wheel and a cycle the composite graphs ⊠ is constructed from the union of and and adding the edges and , where is an edge of and is an edge of . The n – diameter , the n – Hosoya polynomial and the n – Wiener index of ⊠ are obtained in
Ahmed Ali, Haveen Ahmed
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Relationship Between the Hosoya Polynomial and the Edge-Hosoya Polynomial of Trees
, 2016 We prove the relationship between the Hosoya polynomial and the edge-Hosoya polynomial of trees. The connection between the edge-hyper-Wiener index and the edge-Hosoya polynomial is established. With these results we also prove formulas for the computation of the edge-Wiener index and the edge-hyper-Wiener index of trees using the Wiener index and the ...
Tratnik, Niko, Pleteršek, Petra Žigert
openaire +2 more sources