“Ali Reza Ashrafi”

Tel:  (+98)(21)22290928
Fax:  (+98)(21)22290648
Email: 

IPM Positions

Resident Researcher, School of Mathematics
(2008 - 2013 )

Past IPM Positions

Associate Researcher (non-resident), School of Mathematics
(2005 - 2006)
Associate Researcher (non-resident), School of Mathematics
(1998 - 2002)


Non IPM Affiliations

Professor of Kashan University

Related Papers

1. A. R. Ashrafi (Joint with A. Hamzeh and S. Hossein-Zadeh)
Extremal graphs under Wienner-type invariants
MATCH Communications in Mathematical and in Computer Chemistry 69 (2013), 47-54  [abstract]
2. A. R. Ashrafi (Joint with M. Tavakoli and F. Rahbarnia)
Further results on hierarchical product of graphs
Discrete Appl. Math. 161 (2013), 1162-1167  [abstract]
3. A. R. Ashrafi (Joint with A. Behmaram and H. Yousefi-Azari)
Wiener polarity index of fullerenes and hexagonal systems
Appl. Math. Lett. 25 (2012), 1510-1513  [abstract]
4. A. R. Ashrafi (Joint with Z. Yarahmadi)
The Szeged, vertex PI, first and second Zagreb indices of corona product of graphs
Filomat 26 (2012), 467-472  [abstract]
5. A. R. Ashrafi (Joint with M. J. Nadjafi-Arani and H. Khodashenas)
Graphs whose Szeged Wiener numbers differ by 4 and 5
Mathematical and Computer Modeling 55 (2012), 1644-1648  [abstract]
6. A. R. Ashrafi (Joint with M. J. Nadjafi-Aarani and H. Khodashenas)
Relationship between edge Szeged and edge Wiener indices of graphs
Glasnik Matematicki 47 (2012), 21-29  [abstract]
7. A. R. Ashrafi (Joint with H. Khodashenas, M. J. Nadjafi-Arani, and I. Gutman)
A new proof of the Szeged-Wiener theorem
Kragujevac J. Math. 35 (2011), 165-172  [abstract]
8. A. R. Ashrafi (joint with M. Ghorbani and M. A. Hossein-Zadeh)
The eccentric connectivity polynomial of some graph operations
Serdica J. Computing 5 (2011), 101-116  [abstract]
9. A. R. Ashrafi (Joint with A. Hamzeh and S. Hossein-zadeh)
Calculation of some topological indices of splices and links of graphs
J. Appl. Math. & Informatics. 29 (2011), 327-335  [abstract]
10. A. R. Ashrafi (Joint with M. Mogharrab, M. J. Nadjafi-Arani and G. H. Fath-Tabar)
Some bounds on Balaban index of a graph
Utilitas Math. 84 (2011), 325-331  [abstract]
11. A. R. Ashrafi (Joint with T. Doslic and A. Hamzeh)
Extremal graphs with respect to the Zagreb coincides
MATCH Communications in Mathematical and in Computer Chemistry 65 (2011), 85-92  [abstract]
12. A. R. Ashrafi (Joint with S. Hossein-zadeh and A. Hamzeh)
Extremal properties of Zagreb coindices and degree distance of graphs
Miskolc Math. Notes 11 (2010), 129-137  [abstract]
13. A. R. Ashrafi (Joint with M. H. Khalifeh and H. Yousefi-Azari)
Another aspect of graph invariants depending on the path metric and an application in nanoscience
Comput. Math. Appl. 60 (2010), 2460-2468  [abstract]
14. A. R. Ashrafi (Joint with Z. Yarahmadi and T. Doslic)
The bipartite edge frustration of composite graphs
Discrete Appl. Math. (Accepted) [abstract]
15. A. R. Ashrafi (Joint with Gh. H. Fath-Tabar and T. Doslic)
On the Szeged and the Laplacian szeged spectrum of a graph
Linear Algebra Appl. 433 (2010), 662-671  [abstract]
16. A. R. Ashrafi (Joint with G. H. Fath-Tabar, M. J. Nadjafi-Arani, and M. Mogharrab)
Some inequalities for Szeged-like topological indices of graphs
MATCH Communications in Mathematical and in Computer Chemistry 63 (2010), 145-150  [abstract]
17. A. R. Ashrafi (Joint with S. Hossein-Zadeh and A. Hamzeh)
Wiener-type invariants of some graph operations
Filomat 23 (2009), 103-113  [abstract]
18. A. R. Ashrafi (Joint with M. J. Nadjafi and g. H. Fath-Tabar)
Extremal graphs with respect to the vertex PI index
Appl. Math. Lett. 22 (2009), 1838-1840  [abstract]
19. A. R. Ashrafi (Joint with H. Yousefi-Azari and N. Sedigh)
On the Szeged index of some Benzenoid graphs applicable in nanostructures
Ars Combin. 90 (2009), 55-64  [abstract]
20. A. R. Ashrafi (Joint with M. H. Khalifeh and H. Yousefi-Azari)
The first and second Zagreb indices of some graph operations
Discrete Appl. Math. 157 (2009), 804-811  [abstract]
21. A. R. Ashrafi (Joint with M. H. Khalifeh, H. Yousefi-Azari, and S. G. Wagner)
Some new results on distance-based graph invariants
European J. Combin. 30 (2009), 1149-1163  [abstract]
22. A. R. Ashrafi and Z. Yaoqing
On 5- and 6-decomposable finite groups
Math. Slovaca 53 (2003), 373-383  [abstract]
23. A. R. Ashrafi and H. Sahraei
On finite groups whose every normal subgroups is a union of the same number of conjugacy classes
Vietnam J. Math. 30 (2002), 289-294  [abstract]
24. A. R. Ashrafi
On the number of maximal theta pairs in a finite group
Acta Math. Inform. Univ. Ostraviensis 9 (2001), 5-12  [abstract]
25. A. R. Ashrafi (Joint with M. R. Darafsheh and G. A. Moghani)
(p, q, r)-Generations of the Conway group Co1 for odd p
Kumamoto J. Math. 14 (2001), 1-20  [abstract]
26. A. R. Ashrafi (Joint with M. R. Darafsheh)
(2,p,q)-Generations of the Conway group Co1
Kumamoto J. Math. 13 (2000), 1-20  [abstract]
27. A.R. Ashrafi
Counting the centralizers of some finite groups
Korean J. Comput. Appl. Math. 7 (2000), 115-124  [abstract]
28. A. R. Ashrafi
On finite groups with a given number of centralizers
Algebra Colloq. 7 (2000), 139-146  [abstract]
[Back]   
scroll left or right