### Abdulhafid Mohammed Modabish

**Personal Information:**

** ****Name****: **** Abdulhafid Mohammed Modabish**** **

** Date and place of birth : December 1, 1974, Hodaidah (Yemen) **

** Nationality: Yemeni **

** Marital status: Married **

** Adress: Department of Mathematics, Faculty of Science, Sana’a University**

**Specialization: Applied Mathematics**

**Current position: Associate** **Professor **

** Tel : +967 711400224** ** ــ****+967 771011700**

**Summary**:

**I am** **Dr. Abdulhafid Modabish working as Associate Professor, Department of Mathematics, Faculty of Science, Sana’a University . I have completed MSc (2007) and PhD (2012) Applied Mathematics from Faculty of Science, Mohammed V University (Rabat – Morocco). My area of interest are Discrete Mathematics and Graphs Theory.** **Iam having 8 years of teaching experience. **

**Education:**

*Ph. D.***in Mathematics and Computer science, Speciality : Applied Mathematics, ****thesis titled «**Enumeration Of The Number Of Spanning Trees In Some Special Planar Maps**» Department of Mathematics and Computer Science, Faculty of Science, Mohammed V University – Agdal (Rabat – Morocco) 2012. **

*Sc.***in Mathematics and Computer science, Speciality : Applied Mathematics,****thesis titled «**Etude Sur La Classification Topologique Des Polynomes Complexes**» Department of Mathematics and Computer Science, Faculty of Science, Mohammed V University – Agdal (Rabat – Morocco) 2007.***Sc.***Mathematics and Physics, Department of Mathematics, Faculty of Education, Sana’a University (Sana’a – Yemen) 1997.**

**Experience:**

**2013 –** : Assistant Professor in Department of Mathematics, Faculty of Science, Sana’a

University ( Yemen)

**2015 – 2016** and **2019 –**

: Head of Department of Mathematics, Faculty of Science , Sana’a University Yemen.

**1998 – 2004** : Mathematics teacher at high schools.

** Languages**** : **Arabic, English, French

**Teaching Experience**:

Undergraduate courses in Mathematics: Calculus (I, II, III), Discrete Mathematics, Algebra, Linear Algebra, Differential Equations, Probability and Statistics , Project Graduation …etc.

**Research Interests**:

**Discrete Mathematics – Graphs Theory**

**Conferences and Workshops:**

*Modabish, D. Lotfi and M. El Marraki, The number of spanning trees of planar maps: theory and applications*. Proceedings of the International Conference on Multimedia Computing and Systems IEEE 2011, Ouarzazate-Morocco.*Modabish and M. El Marraki, Formulas for the Number of Spanning Trees in a Kite Planar Maps,*Proceedings of the Graph & Applications, Une Journée Scientifique Graph Workshop 2011, Rabat-Morocco.*Modabish and M. El Marraki, The number of spanning trees in some special planar maps ,*Proceedings of the International Workshop on Information technologies and Communication 2011 (WOTIC’11), Casablanca-Morocco.

**Research and scientific papers:**

*A. Modabish and M. El Marraki, Wiener index of planar maps*. Journal of Theoretical and Applied Information Technology (JATIT), Vol. 18, 2010, no. 1, pp. 7 – 10.*A. Modabish and M. El Marraki, The number of spanning trees of certain families of planar maps*. Applied Mathematical Science, Vol. 5, 2011, no. 18, pp. 883 – 898.*A. Modabish, D. Lotfi and M. El Marraki, Formulas for the Number of Spanning Trees in a Maximal Planar Map.*Applied Mathematical Science, Vol. 5, 2011, no. 64, pp. 3147 – 3159.*Dounia Lotfi, Mohamed El Marraki, Abdulhafid Modabish, Recursive Relation for Counting the Complexity of Butterfly Map*. Journal of Theoretical and Applied Information Technology (JATIT), Vol. 29, 2011, no. 1, pp. 43 – 46.*A. Modabish and M. El Marraki, Counting the number of spanning trees in the star flower planar map*. Applied Mathematical Science, Vol. 6, 2012, no. 49, 2411 – 2418.

*A. Alameri, A. Modabish and A. Ayache, New Product Operation on Graphs and it’s Properties*. International Mathematical Forum, Vol. 11, 2016, no. 8, 357 – 368.*A. Alameri, E. Ali, and A. Modabish, Zagreb Indices of Some New Graphs*. J. Modern Sci. Eng. Vol. 2. No. 3 (2018) 17 – 28*Ahmed Ayache, Abdu Alameri, Abdullatif Ghallab and Abdulhafid Modabish, Wiener polynomial and Wiener index of conical graphs*. SYLWAN, 164 (3). ISI Indexed, 2020.

*Abdulhafid Modabish, Abdu Alameri, Mohammed S. Gumaan and Mohammed Alsharafi,*The Second Hyper-Zagreb Index of Graph Operations. J. Math. Comput. Sci. 11 (2021), No. 2, 1455-1469.

*Abdulhafid Modabish and*Abdu Alameri*, Enumeration of Spanning Trees in a Chain of Diphenylene planar Graphs.*Accepted to be Published in Applied Mathematical Sciences (2021).

00967 771011700