Results 31 to 40 of about 131,666 (230)

GTI-space : the space of generalized topological indices [PDF]

, 2008
A new extension of the generalized topological indices (GTI) approach is carried out torepresent 'simple' and 'composite' topological indices (TIs) in an unified way.
A.R Matamala, A.R Matamala, A.T Balaban, Adelio R. Matamala, B Zhou, D. Plavšić, D.J Klein, D.J Klein, D.J Klein, E Estrada, E Estrada, E. Estrada, E. Estrada, E. Estrada, E. Estrada, E. Estrada, Ernesto Estrada, G.G Cash, H Wiener, H.P Schultz, H.P Schultz, I Gutman, I Gutman, I Gutman, I Gutman, J. Gálvez, J. Gálvez, J.R Votano, M. Randić, M. Randić, O Ivanciuc, R Todeschini, R.F Brown, W.R. Müller, Z. Mihalić   +34 more
core   +1 more source

具有最小Wiener指数的三圈图(The tricyclic graphs with minimal Wiener index)

Zhejiang Daxue xuebao. Lixue ban, 2014
The Wiener index W(G) is defined as the sum of distances between all pairs of vertices of a graph G. The graph with the minimum Wiener index among all connected tricyclic graphs with order n is characterized.
XINGBaohua(邢抱花), SHAOYun(邵云), YUGuidong(余桂东)   +2 more
doaj   +1 more source

The n-Hosoya Polynomials of the Composite of Some Special Graphs [PDF]

Al-Rafidain Journal of Computer Sciences and Mathematics, 2013
It is not easy to find the n-Hosoya polynomial of the compound graphs constructed in the form G1⊠G2 for any two disjoint connected graphs  and .Therefore, in this paper, we obtain n-Hosoya polynomial of G1⊠G2 when  is a complete graph and  is a special ...
Ahmed Ali
doaj   +1 more source

On spectral radius and Nordhaus-Gaddum type inequalities of the generalized distance matrix of graphs

Karpatsʹkì Matematičnì Publìkacìï, 2022
If $Tr(G)$ and $D(G)$ are respectively the diagonal matrix of vertex transmission degrees and distance matrix of a connected graph $G$, the generalized distance matrix $D_{\alpha}(G)$ is defined as $D_{\alpha}(G)=\alpha ~Tr(G)+(1-\alpha)~D(G)$, where $0 ...
M. Merajuddin, S. Bhatnagar, S. Pirzada
doaj   +1 more source

Hosoya Polynomial and Wiener Index of Zero-Divisor Graph of Z_n [PDF]

Al-Rafidain Journal of Computer Sciences and Mathematics, 2018
Let R be a commutative ring with identity. We associate a graph . In this paper, we find Hosoya polynomial and Wiener index of  Zn , with  n= pm or n= pmq, where p and q are distinct prime numbers and m is an integer with m 2.
Husam Mohammad, Mohammad Authman
doaj   +1 more source

Generalizations of Wiener polarity index and terminal Wiener index

, 2012
In theoretical chemistry, distance-based molecular structure descriptors are used for modeling physical, pharmacologic, biological and other properties of chemical compounds.
Ilic, Aleksandar, Ilic, Milovan
core   +1 more source

On the difference between the Szeged and Wiener index

, 2016
We prove a conjecture of Nadjafi-Arani, Khodashenas and Ashrafi on the difference between the Szeged and Wiener index of a graph. Namely, if $G$ is a 2-connected non-complete graph on $n$ vertices, then $Sz(G)-W(G)\ge 2n-6$.
Bonamy, Marthe, Knor, Martin, Lužar, Borut, Pinlou, Alexandre, Škrekovski, Riste   +4 more
core   +2 more sources

The n-Hosoya Polynomials of Some Classes of Thorn Graphs [PDF]

Al-Rafidain Journal of Computer Sciences and Mathematics, 2010
The n-Hosoya Polynomials of cog-complete graphs , thorn cog-complete graphs , cog-stars , thorn cog-stars , cog-wheels , and thorn cog-wheels are obtained . The n-Wiener indices of these graphs are also determined .
Ali Ali, Ahmed Ali
doaj   +1 more source

Wiener index of an ideal-based zero-divisor graph of commutative ring with unity

AKCE International Journal of Graphs and Combinatorics
The Wiener index of a connected graph G is [Formula: see text]. In this paper, we obtain the Wiener index of H-generalized join of graphs [Formula: see text]. As a consequence, we obtain some earlier known results in [Alaeiyan et al. in Aust. J.
Balamoorthy S., Kavaskar T., Vinothkumar K   +2 more
doaj   +1 more source

Diabetes‐induced vascular calcification is associated with low pyrophosphate and its oral supplementation prevents calcification in diabetic mice

FEBS Open Bio, EarlyView.
Induction of diabetes in three different mouse strains uniformly resulted in an increase in TNAP activity and a reduction in pyrophosphate (PPi) in the circulation. Inhibition of TNAP restored plasma PPi. Diabetes‐induced calcification in the media layer of the aorta was detected only in the Abcc6−/− strain, which is predisposed to ectopic ...
Krisztina Fülöp, Eszter Kozák, Natália Tőkési, Lilian Kocsis, Anikó Kelemen, Zsuzsanna Geszti, Adriána Kutás, Mariann Harangi, Ágnes Diószegi, Zsolt Rapi, József Balla, Olivier Le Saux, András Váradi, Viola Pomozi   +13 more
wiley   +1 more source