the reciprocal degree distance (rdd)‎, ‎defined for a connected graph $g$ as vertex-degree-weighted sum of the reciprocal distances‎, ‎that is‎, ‎$rdd(g) =sumlimits_{u,vin v(g)}frac{d_g(u)‎ + ‎d_g(v)}{d_g(u,v)}.$ the reciprocal degree distance is a weight version of the harary index‎, ‎just as the degree distance is a weight version of the wiener index‎. ‎in this paper‎, ‎we present exact formu...

The Zagreb indices are among the oldest and the most famous topological molecular structure-descriptors. The first Zagreb index is equal to the sum of the squares of the degrees of the vertices, and the second Zagreb index is equal to the sum of the products of the degrees of pairs of adjacent vertices of the respective graph. In this paper, we characterize the extremal graphs with maximal, sec...

The reformulated Zagreb indices of a graph is obtained from the classical Zagreb by replacing vertex degree by edge degree and are defined as sum of squares of the degree of the edges and sum of product of the degrees of the adjacent edges. In this paper we give some explicit results for calculating the first and second reformulated Zagreb indices of dendrimers. Mathematics Subject Classificati...

In this paper, we obtain some upper and lower bounds for the general extended energy of a graph. As an application, we obtain few bounds for the (edge) Zagreb energy of a graph. Also, we deduce a relation between Zagreb energy and edge-Zagreb energy of a graph $G$ with minimum degree $delta ge2$. A lower and upper bound for the spectral radius of the edge-Zagreb matrix is obtained. Finally, we ...

1 Karmela Aleksic-Maslac, University of Zagreb, Faculty of Electrical Engineering and Computing, Unska 3, Zagreb, Croatia, [email protected] 2 Branko Jeren, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, Croatia, [email protected] 3 Zvonko Kostanjcar (Student), University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, Croatia, Zvonko.K...

AIM To assess the academic performance of students who transferred to the Zagreb School of Medicine from other three medical schools in Croatia. METHODS Academic performance of medical students who moved from Rijeka, Osijek, or Split University Medical Schools to the Zagreb University School of Medicine at the second or third year was compared with academic performance of students enrolled at...

—The graphs which are used in this paper simple, finite and undirected. The first second Zagreb indices for every non-adjacent vertices (also called coindices) dependent only on the degrees interspersed operations of addition multiplication, respectively, vertices. number edges incident vertex v a graph G is degree two u if it’s no common edge between them. In paper, we found coindices chains e...

1Sveučilište Josipa Jurja Strossmayera u Osijeku, Medicinski fakultet Osijek, Osijek, Hrvatska 2Klinička bolnica Sveti Duh, Zagreb, Hrvatska 3Hrvatski zavod za hitnu medicinu, Zagreb, Hrvatska 4Medicinski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska 5Klinička bolnica Merkur, Zagreb, Hrvatska 1Josip Juraj Strossmayer University of Osijek, Faculty of Medicine, Osijek, Croatia 2University Hosp...

PROTON MAGNETIC RESONANCE SPECTROSCOPY IN HUNTINGTON'S DISEASE ACCOMPANYING NEUROBORRELIOSIS Helena Sarac, David Ozretic, Neven Henigsberg, Pero Hrabac, Ivan Bagaric & Lucija Bagaric-Krakan Department of Neurology, University Hospital Zagreb, Zagreb, Croatia Croatian Institute for Brain Research, Zagreb, Croatia School of Medicine, University of Zagreb, Zagreb, Croatia Department of Radiology, ...