Najaf AMRAEI, PhD Student | Cited by 45 | of Shahid Rajaee University, Tehran (SRTTU) | Read 6 publications | Contact Najaf AMRAEI

by najaf amraei Abstract The extended adjacency matrix of graph G , A e x is a symmetric real matrix that if i ≠ j and u i u j ∈ E ( G ) , then the i j th entry is d u i 2 + d u j 2 / 2 d u i d u j , and zero otherwise, where d u indicates the degree of...

Dec 1, 2022 · Mathematics 2017 Abstract We give sharp upper and lower bounds for the spectral radius of a nonnegative matrix with positive row sums using average 3-row sums, compare these bounds with the existing bounds using the …

Aug 19, 2023 · In this paper, we determine some sharp bounds on the symmetric division deg index of graphs and line graphs and characterize the corresponding extremal graphs. We use | U | to denote the cardinality of set U. Let \ (G= (V_ {G},E_ {G})\) be a graph with vertex set \ (V_ {G}\) and edge set \ (E_ {G}\).

Mar 15, 2023 · Mathematics For a simple finite graph G, the generalized adjacency matrix is defined as Aα(G)=αD(G)+(1−α)A(G),α∈[0,1], where A(G) and D(G) are respectively the adjacency matrix and diagonal matrix of the vertex degrees.

Amraei / Journal of Discrete Mathematics and Its Applications 7 (2022) 237–251 Molecular descriptors, which are numerical functions of molecular structure, play an im-portant role in mathematical chemistry. They are used in QSAR and QSPR studies to study and predict biological or chemical properties of molecules [5]. Topological indices ...

حل یک نوع تیپ از تست های مبحث دنباله ها، توسط استاد محمد فهیم امرایی با دنبال کردن صفحه اینستاگرام ما از ویدئوهای اموزشی رایگان لذت ببرید amraei_math_teacher.

In this paper, we focus on Ashrafi’s work and his co-authors who are pioneers in mathematical chemistry in Iran. The origins of mathematical chemistry can be traced back to the 18th century, as...

Najaf Amraei * Journal of Discrete Mathematics and Its Applications, Autumn 2022

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