Results 11 to 20 of about 4,473 (174)

On reformulated Zagreb indices

Discrete Applied Mathematics, 2012
The first and second reformulated Zagreb indices are defined respectively in terms of edge-degrees as EM1(G)=∑e∈Edeg(e)2 and EM2(G)=∑e∼fdeg(e)deg(f), where deg(e) denotes the degree of the edge e, and e∼f means that the edges e and f are adjacent.
Ilić, Aleksandar, Zhou, Bo, Bo Zhou, Aleksandar Ilić   +3 more
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On the Zagreb Indices Equality

Discrete Applied Mathematics, 2011
For a simple graph G with n vertices and m edges, the first Zagreb index and the second Zagreb index are defined as M1(G) = v∈V d(v) 2 and M2(G) = uv∈E d(u)d(v).
Hosam Abdo, Ivan Gutman, Darko Dimitrov
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Entire Zagreb indices of graphs

Discrete Mathematics, Algorithms and Applications, 2018
The Zagreb indices have been introduced in 1972 to explain some properties of chemical compounds at molecular level mathematically. Since then, the Zagreb indices have been studied extensively due to their ease of calculation and their numerous ...
Alqesmah, Akram, Cangul, I. N., Ismail Naci Cangul, Alwardi, Anwar, R. Rangarajan, Rangarajan, R., Anwar Alwardi, Akram Alqesmah   +7 more
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New formulae for zagreb indices

AIP Conference Proceedings, 2017
Bu çalışma, 19-25 Ekim 2016 tarihleri arasında Rhodes[Yunanistan]’da düzenlenen International Conference on Numerical Analysis and Applied Mathematics (ICNAAM)’da bildiri olarak sunulmuştur.In this paper, we study with some graph descriptors also called ...
Tsitouras, C., Çevik, Ahmet Sinan, Simos, T.   +2 more
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On Variable Zagreb Indices

Croatica Chemica Acta, 2004
A novel variant of the Zagreb indices introduced in 1972, called the variable Zagreb indices, is presented. Their performance in the QSPR modeling of lower (C3–C8) alkane boiling points is compared with the original Zagreb indices and their modifications.
Ante Milicevic, Nikolić, Sonja, Miličević, Ante, Sonja Nikolic   +3 more
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On Zagreb Eccentricity Indices

Croatica Chemica Acta, 2011
Zagreb eccentricity indices were proposed analogously to Zagreb indices already known and used for almost forty years. For a connected graph, the first Zagreb eccentricity index is defined as the sum of the squares of the eccentricities of the vertices,
Zhou, Bo, Bo Zhou, Xing, Rundan, Trinajstić, Nenad, Rundan Xing, Nenad Trinajstić   +5 more
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About the Zagreb Indices

Kemija u Industriji, 2010
Prikazani su izvorni Zagrebački indeksi i neke njihove inačice kao što su modificirani Zagrebački indeksi, varijabilni Zagrebački indeksi, reformulirani izvorni Zagrebački indeksi, reformulirani modificirani Zagrebački indeksi, Zagrebački indeksi kao ...
Gutman, I., N. Trinajstić, S. Nikolić, Nikolić, S., Miličević, A., A. Miličević, Trinajstić, N., I. Gutman   +7 more
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New bounds on Zagreb indices and the Zagreb Co-indices

Boletim da Sociedade Paranaense de Matemática, 2011
In this short note, we studied the first, second Zagreb indices and the Zagreb Co-indices. Also, established the connections of bounds to the above sighted indices.
P. S. Ranjini, V. Lokesha, A. R. Bindusree, M. Phani Raju   +3 more
openaire   +5 more sources

On difference of Zagreb indices

Discrete Applied Mathematics, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Boris Furtula, Ivan Gutman, Süleyman Ediz   +2 more
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Multiplicative Zagreb indices of cacti [PDF]

Discrete Mathematics, Algorithms and Applications, 2016
Let [Formula: see text] be multiplicative Zagreb index of a graph [Formula: see text]. A connected graph is a cactus graph if and only if any two of its cycles have at most one vertex in common, which is a generalization of trees and has been the interest of researchers in the field of material chemistry and graph theory.
Shaohui Wang, Bing Wei 0001
openaire   +3 more sources