Let G= V E be a simple connected graph. The distance between two vertices of G is defined to be the length of the shortest path between the two vertices. There are topological indices assigned to G and based on the distance function which are invariant under the action of the automorphism group of G. Some important indices assigned to G are the Wiener, Szeged, and PI index which we will find th...

The mathematical properties of nano molecules are an interesting branch of nanoscience for researches nowadays. The periodic open single wall tubulene is one of the nano molecules which is built up from two caps and a distancing nanotube/neck. We discuss how to automatically construct the graph of this molecule and plot the graph by spring layout algorithm in graphviz and netwrokx packages. The...

a Department of Inorganic and Analytical Chemistry, University of Szeged, Dóm tér 7. H-6720 Szeged, Hungary 8 b MTA-SZTE Bioinorganic Chemistry Research Group, University of Szeged, Dóm tér 7. H-6720 Szeged, 9 Hungary 10 c Centro de Química e Bioquímica (CQB), Faculdade de Ciências, ULisboa, Campo Grande, Lisbon, Portugal 11 d Centro de Química Estrutural (CQE), Faculdade de Ciências, ULisboa, ...

Topological indices are numerical parameters of a graph which characterize its topology. In this paper the PI, Szeged and Zagreb group indices of the tetrameric 1,3–adamantane are computed.

Katinka Ónodi-Nagy1*, Zsuzsanna Bata-Csörgő1, Erika Varga1, Lajos Kemény1 and Ágnes Kinyó1,2 1Department of Dermatology and Allergology, University of Szeged, Albert Szent-Györgyi Medical Center, Hungary 2Department of Dermatology, Venereology and Oncodermatology, University of Pécs, Hungary *Corresponding author: Katinka Ónodi-Nagy, Department of Dermatology and Allergology, University of Szeg...

The PI index is a graph invariant defined as the summation of the sums of edges of neu and nev over all the edges of connected graph G, where neu is the number of edges of G lying closer to u than to v and nev is the number of edges of G lying closer to v than to u. The index is very simple to calculate and has disseminating power similar to that of the Wiener and the Szeged indices. The compre...

Optical properties and mineralogical composition of different Saharan mineral dust samples: a laboratory study C. Linke, O. Möhler, A. Veres, Á. Mohácsi, Z. Bozóki, G. Szabó, and M. Schnaiter Forschungszentrum Karlsruhe, Institute of Meteorology and Climate Research, P.O. Box 3640, 76021 Karlsruhe, Germany University of Szeged, Faculty of Natural Sciences, Department of Optics and Quantum Elect...

(I.Ch.:) Department of Algebra and Geometry, Palacký University Olomouc, Tomkova 40, 779 00 Olomouc, Czech Republic (G.Cz. and E.K.H.:) University of Szeged, Bolyai Institute, Szeged, Aradi vértanúk tere 1, HUNGARY–6720. E-mail: [email protected], [email protected], [email protected]

CRISTINA TRANDAFIRESCU1, STEFANA AVRAM1*, CODRUTA SOICA1, ZOLTÁN AIGNER2, GYÉRESI ÁRPÁD3, MIHALY KATA2, CRISTINA DEHELEAN1, ZOLTÁN SZABADAI1, FLORIN BORCAN1 1Faculty of Pharmacy, Victor Babe’ University of Medicine and Pharmacy, 2nd Eftimie Murgu Sq., 300041, Timisoara, Romania 2Faculty of Pharmacy, University of Szeged, 6th Eötvös Str., Szeged, Hungary 3Faculty of Pharmacy, University of Medic...

1Department of Anaesthesiology and Intensive Therapy, Faculty of Medicine, University of Szeged, 6 Semmelweis St., Szeged 6725, Hungary 24th Department of Internal Medicine, Attikon University Hospital, 1 Rimini Str., 12462 Athens, Greece 3Sections of Critical Care Medicine and Infectious Diseases, Medical Microbiology and Pharmacology, University of Manitoba, Winnipeg, MB, Canada 4Department o...