
1. Combinatorial and
algebraicstructure of hypergroup associated with a hypergraph,
29th Annual Iranian Math. Conf.,
Amirkabir Univ., Tehran, Iran, 1998.
2.
nPhyperoperations
and nPHvrings
when n = 2;
3, 10th
seminar on Algebra,
Kordestan Univ., Sanandaj, Iran, 1998.
3.
Hvstructures
associated with generalized Phyperoperations
(with Ali Iranmanesh), ICM98, Berlin,
Germany, 1998.
4.
nPHvhyperstructures
when n = 1;
2;
3, 30th Iranian
International Conf. On Mathematics,
Mohaghegh Ardebili Univ., Ardebil, Iran, 1999.
5.
Hvstructures
associated with nFhyperoperations
(n = 1;
2;
3), 11th seminar
on Algebra,
Industrial Univ. of Esfahan, Esfahan, Iran, 1999.
6. Hypergroups
associated with directed graphs, 11th
seminar on Algebra, Industrial
Univ. of Esfahan, Esfahan, Iran, 1999.
7.
Hvstructures
associated with generalized nFhyperoperations
(n = 1;
2;
3), 7th
International Congress. On Algebraic Hyperstructures and
Applications, Taormina, Italy,1999.
8. Khayyam and
Mathematics, Annal seminar in
Khayyam's birthday, Tehran, Iran, 2001.
9. Hypergroups
associated with digraphs, 9th
International Congress. On Algebraic Hyperstructures and
Applications, Mazandaran, Iran, 2005.
10. Sharply (n2)transitive
sets of permutations, 36th Iranian
International Conf. On Mathematics,
Yazd Univ., Yazd, Iran, 2005.
11. Characterization
of Iso(Sn),
Iso(An)
and Iso(An^c);
Groups of Isometries of Sn,
An
and An^c,
17th seminar on Algebra,
University of Sistan va Baluchistan, Sistan va baluchistan,
Iran, 2006.
12. The Number of
Minimal vu
Paths in Cayley Graph associated to
the Sn
and The Set
of Transpositions, 37th Iranian
International Conf. On Mathematics,
Azarbaijan Tarbiat Moallem University,
Tabriz, Iran, 2006.
13. Domatic Colouring
of Graphs, 38th Iranian International
Conf. On Mathematics,
Zanjan University, Zanjan, Iran, 2007.
14. The Letter to the
Concept that was not born!, 9th
Iranian Conf. On Mathematics Education,
University of Sistan va Baluchistan, Sistan va baluchistan,
Iran, 2007.
15. Teaching
mathematics based on Pirie and Kieren's model of mathematical
understanding, 10th Iranian Conf. On
Mathematics Education, University of
Yazd, Yazd, Iran,2008.
16. Capable is he who
is wise and vice versa, 10th Iranian
Conf. On Mathematics Education,
University of Yazd, Yazd, Iran, 2008.
17. On Colorings of
graph fractional powers, SBU
Combinatorics Day, Shahid Beheshti
University, Tehran, Iran, 2009.
18. Circular Coloring
and Colorful Kl;m
Theorem,
Workshop on Topological Combinatorics,
Shahid Beheshti University, Tehran, Iran, 2009.
19. Two
generalizations of Cayley graphs,
Groups and Combinatorics Seminars,
University of Western Australia, Perth, Australia, 2010.
20. On total Colorings
of graph fractional powers, IUT
Combinatorics Day, Isfahan University
of Technology, Isfahan, Iran, 2011.
21. On automorphism
groups of graph powers, Graph and
Algorithm Workshop, Institute
for Research in Fundamental Sciences (IPM), Tehran, Iran,
2011.
22. Isomorphic
Decompositions of Cayley Graph Associated to
Sn,
42th Iranian International Conf. On
Mathematics, ValieAsr University,
Rafsanjan, Iran, 2011.
23. Automorphism
groups of a tree and its vertexdeleted subgraphs,
4th Algebraic Combinatorics Conf. of Iran,
Bu Ali Sina University, Hamedan, Iran, 2011.
24. Fractional powers
of graphs, Invited Speaker for weekly
seminars, Institute for Advanced
Studies in Basic Sciences (IASBS), Zanjan, Iran, 2012.
25. Frucht Theorem and
its generalisations, SBU
Combinatorics Seminar, Shahid Behesti
University, Tehran, Iran, 2012.
26. Domination number
of graph fractional power,
Combinatorics and Computing Seminars,
Institute for Research in Fundamental Sciences (IPM), Tehran,
Iran, 2012.
27. Twosided Cayley
graph: a new generalisation of Cayley graph,
Seminars of SUT
Group of Combinatorics and Discrete Structures,
Sharif university of technology, Tehran,
Iran, 2012.
28. Edge coloring of
graph fractional powers, 43th Iranian
International Conf. On Mathematics,
Tabriz University, Tabriz, Iran, 2012.
29. Twosided Cayley
graphs: A new generalization of Cayley graphs,
Second Seminar on
Algebra and its Applications,
University of Mohaghegh Ardabili, Ardabil, 2012.
30. Generalization of
Subdivision for hypergraphs and their colorings,
Combinatorics and
Computing Seminars, Institute for
Research in Fundamental Sciences (IPM), Tehran,
Iran, 2013.
31. Domination number
of graph fractional power, Frontiers
in Mathematical Sciences, 2nd
Conference, Tehran, Iran, 2014.
32. Subdivision of
hypergraphs and their colorings,
Frontiers in Mathematical Sciences,
3rd Conference, Tehran, Iran, 2015.
33. Permutation representation of
graphs, IPMCCC2015,
Tehran, Iran, 2015. 
