Abdo Mohammed Ali Qahis

member of the teaching staff - Associate professor

Associate professor
 College of Science and Arts
Departement of MathematicS

Specialist in general topology.  I am interested in researching  of the following concepts:
 

  • Topological Properties: Investigating covering properties in classical topological spaces, generalized topological spaces, ideal topological spaces, and primal topological spaces.

  • Continuity: Studying continuity concepts across standard topology, generalized topology, and ideal topology.

  • New Open Sets: Exploring new forms of open sets in topological spaces, generalized topological spaces, and ideal topological spaces.

  • Bitopological Spaces: Analyzing structures and properties of bitopological spaces and their applications.


 

0175427255
amgahis@nu.edu.sa

Qualifications

Ph.D. in Mathematics, 2013
National University of Malaysia (UKM), School of Mathematical Sciences
Thesis: “Generalization of Confluent Mappings Theory in Topological Spaces”
Supervisor: Prof. Dr. Mohd Md Noorani

M.Sc. in Mathematics, 2010
National University of Malaysia (UKM), School of Mathematical Sciences
Thesis: “On Subclasses of Harmonic Starlike and Analytic Functions”
Supervisor: Prof. Dr. Maslina Darus

B.S. in Mathematics, 2006
Sana’a University, Faculty of Education, Department of Mathematics

Experiences

2020 – Present
Associate Professor, Department of Mathematics
College of Arts & Sciences, Najran University, Saudi Arabia

2013 – 2020
Assistant Professor, Department of Mathematics
College of Arts & Sciences, Najran University, Saudi Arabia

2010 – 2013
Teaching Assistant, School of Mathematical Sciences
Faculty of Science & Technology, National University of Malaysia (UKM), Malaysia

2006 – 2008
Demonstrator, Department of Mathematics
Faculty of Science, Sana’a University, Yemen

Specialties and Skills

 

Supervision Experience

M.Sc. Supervisor (2021–2023)
Mrs. Fatimah Al Mahri – New Forms of Open Sets in Generalized Topological Spaces with Their Related Notions,
Najran University, Saudi Arabia

University Committees and Academic Service

  • Member, Department of Mathematics Council, College of Arts & Sciences, Najran University, KSA (Nov 2014 – Present)

  • Member, Editorial Board, General Letters in Mathematics (GLM), Najran University, KSA (2016 – Present)

  • Member, Academic Advising Committee, College of Arts & Sciences, Najran University, KSA (2014 – Present)

  • Member, Quality Assurance Unit, Department of Mathematics, Najran University, KSA (2014 – Present)

Training Courses

 

  • LaTeX Workshop – 20 November 2008
    Organized by Centre for Modeling and Data Analysis (DELTA), School of Mathematical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia

  • BibTeX Workshop: The Reference Management Tool – 20 November 2011
    Organized by Centre for Modeling and Data Analysis (DELTA), School of Mathematical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia

  • How to Publish a Scientific Paper in an Internationally Indexed Journal (ISI) – 2014
    Organized by Deanship of Development and Quality, Najran University, Saudi Arabia

  • Quality Standards in the Educational Process According to the National Quality System in KSA – 17–18 September 2013
    Organized by Activities Committee of the Computer Skills Department, College of Computers, Najran University, Saudi Arabia

  • Cloud Computing Applications in Education – 20 January 2017
    Najran University, Saudi Arabia

  • Course Specification and Course Report Workshop – 7–8 May 2017
    Organized by Deanship of Development and Quality, Najran University, Saudi Arabia

Publications

  1. Apr 2011 – On Quasi-?-Confluent Mappings, Qahis, A. & Noorani, M. S. M., Internet J. Math. Math. Sci, Volume 2011, Article ID 270704.

  2. 2011 – On ?-Confluent Mappings, Qahis, A. & Noorani, M. S. M., Int. Journal of Math. Analysis, Vol. 5, No. 14, pp. 691–703.

  3. July 2012 – More on Quasi-Confluent and Quasi-?-Confluent Mappings, Qahis, A. & Noorani, M. S. M., J. of Adv. Stud. in Topol, Vol. 3, No. 3, pp. 69–75.

  4. January 2012 – A Strong Form of Confluent Mappings, Qahis, A. & Noorani, M. S. M., Questions and Answers in General Topology, Vol. 30, No. 2, Part A.

  5. Apr 2013 – Strongly Path-Confluent Mappings, Qahis, A. & Noorani, M. S. M., Applied General Topology, Vol. 14, No. 1.

  6. 2013 – On Locally Path-Confluent and Locally Quasi-Confluent Mappings, Qahis, A. & Noorani, M. S. M., Questions and Answers in General Topology, Vol. 31, No. 2, Part A.

  7. 2016 – Some Types of ?-Semi-Compactness Via Hereditary Classes, Qahis, A., General Letters in Mathematics, Vol. 2.

  8. 2016 – On Pairwise-N?-Open Sets in Bitopological Spaces, Fahad Alshararia & Abdo Qahis, J. of Adv. Stud. in Topol, Vol. 7, No. 3.

  9. May 2016 – ?-Lindel?fness in Terms of a Hereditary Class, A. Qahis, H. H. Aljarrah & T. Noiri, Missouri J. of Math. Sci., Vol. 28, Issue 1.

  10. Apr 2017 – Functions and Weakly ??-Compact Spaces, A. Qahis & T. Noiri, Eur. J. Pure Appl. Math., Vol. 10, No. 3, pp. 410–418.

  11. July 2017 – Almost Strongly ?-Continuous Functions, H. H. Aljarrah, A. Qahis & T. Noiri, Italian J. of Pure and Appl. Math, Vol. 38, pp. 757–768.

  12. 2017 – Strongly ?-Lindel?f Spaces, H. H. Aljarrah, A. Qahis & T. Noiri, JP J. of Geometry and Topology, Vol. 20, Issue 4, pp. 317–332.

  13. May 2018 – Strong Forms of ?-Lindel?fness with Respect to Hereditary Classes, A. Qahis, H. H. Aljarrah & T. Noiri, Missouri J. of Math. Sci., Vol. 30, Issue 1, pp. 20–31.

  14. 2018 – Almost Lindel?fness in Terms of Ideals in Topological Spaces, A. Qahis, Int. J. Math. Analysis, Vol. 12, No. 4, pp. 169–181.

  15. Jun 2019 – ??-Paracompactness with Respect to an Ideal, A. Qahis, Eur. J. Pure Appl. Math., Vol. 12, No. 1, pp. 135–145.

  16. Sep 2019 – New Forms of Strong Weakly ?-Compact in Terms of Hereditary Classes, A. Qahis, F. Alshararia & T. Noiri, Novi Sad J. Math., Vol. 49, No. 1, pp. 91–100.

  17. Jun 2019 – New Forms of ?-Compactness with Respect to Hereditary Classes, A. Qahis, Boletim da Sociedade Paranaense de Matem?tica, Vol. 37, No. 1, pp. 21–31.

  18. May 2020 – ?-Paracompactness Via a Hereditary Class, A. Qahis & T. Noiri, Missouri J. of Math. Sci., Vol. 32, No. 1, pp. 21–31.

  19. 2021 – Weakly ?-Compact Via a Hereditary Class, A. Qahis, H. H. Aljarrah & T. Noiri, Boletim da Sociedade Paranaense de Matem?tica, Vol. 39, No. 3, pp. 123–135.

  20. 2022 – On ???-?-Open Sets in Generalized Topological Spaces, Fatimah Al Mahri & Abdo Qahis, Int. J. Anal. Appl., Vol. 20, p. 72.

  21. 2024 – Preservation Theorems of Weakly ??-Countably Compact Spaces, Qahis, Abdo & Noiri, Takashi, Boletim da Sociedade Paranaense de Matem?tica, Vol. 42, pp. 1–5.

  22. 2024 – A New Class Between ???-Open Sets and ?-Open Sets in Generalized Topological Spaces, Abdo Qahis & Fatimah Al Mahri, Missouri J. of Math. Sci., Vol. 36, No. 1, pp. 98–110.

  23. October 2024 – Modifications to Mixed ?(??, ??)-Open Sets in Generalized Topological Spaces, Abdo Qahis & Awn Alqahtani, Eur. J. Pure Appl. Math., Vol. 17, No. 4, pp. 3610–3621.

  24. April 2025 – An Introduction to Mixed ?(?(?, ?))-Open Sets Generated by Hereditary Classes in Generalized Topological Spaces, Fahad Alsharari & Abdo Qahis, Eur. J. Pure Appl. Math., Vol. 18, No. 2, Article 5782, pp. 1–10.

  25. January 2025 – A Weakly ?-Countable Compactness and Weakly ??-Countable Compactness, Abdo Qahis & Takashi Noiri, Boletim da Sociedade Paranaense de Matem?tica, Vol. 43, pp. 1–8.

  26. 2026 – Characterizations of Lindel?fness in Primal Topological Spaces, Abdo Qahis, Journal of Siberian Federal University. Mathematics & Physics, Vol. 19, No. 2, pp. 1–11.

Conferences

  1. 24–26 October 2011 – Some Results on ?-Confluent Mappings, Qahis, A., International Seminar on The Current Research Progress in Science and Technology, Paper ID 144, p. 83.

  2. 6–7 July 2011 – Path-Confluent Mappings, Qahis, A., 11th Postgraduate Colloquium, Faculty of Science and Technology, Universiti Kebangsaan Malaysia.

  3. 1–3 November 2011 – Strongly ?-Confluent Mappings between Topological Spaces, Qahis, A., International Seminar on the Application of Science & Mathematics, p. 45.

  4. 8–9 June 2010 – On ?-Continuum and ?-Continuum Spaces, Qahis, A., Regional Annual Fundamental Science Symposium (RAFSS), p. 24.

  5. 30 November – 3 December 2010 – Pseudo-?-Confluent and ?-Joining Mappings, Qahis, A., 2nd International Conference on Mathematical Science (ICMS 2), p. 44.

    Academic Research Website 

    Google Scholar: https://scholar.google.com/citations?user=tmZzt2IAAAAJ&hl=ar
    ResearchGate: https://www.researchgate.net/profile/Abdo-Qahis

Courses Taught

  • Topology

  • Abstract Algebra I

  • Abstract Algebra II

  • Measure Theory

  • Real Analysis I & II

  • Ordinary Differential Equations I & II

  • Euclidean Geometry

  • Analytical Geometry

  • Functional Analysis

  • Linear Algebra I & II

  • Complex Analysis

  • Calculus (Single and Several Variables)

  • Number Theory

  • Probability and Engineering Statistics

Office Hours

First Semester, Academic Year 1447/1448 AH

  8-9 9-10 10-11 11-12 12-1 1-2
الأحد
Sunday		  

 

        
الاثنين
Monday		           ساعات مكتبية
الثلاثاء
Tuesday		     ساعات مكتبية      
الأربعاء
Wednesday		           ساعات مكتبية
الخميس
Thursday		     ارشاد اكاديمي واعمال جودة ساعات مكتبية