Tachtsis Eleftherios

Professor
Department of Statistics and Actuarial-Financial Mathematics, University of the Aegean

 

Education:

(1996) B.Sc. in Mathematics, University of the Aegean.

Diploma Thesis: The consistency of the Axiom of Choice and of the Generalized Continuum Hypothesis.

(2002) Ph.D. in Mathematics, Department of Mathematics, University of the Aegean.

Ph.D. Thesis: The Axiom of Choice in Topology.

Ph.D. Thesis Advisor: Kyriakos Keremedis

Academic Positions:

2002 - 2003 (Fall Semester): Visiting Instructor, University of the Aegean, Department of Statistics and Actuarial-Financial Mathematics.

2002 - 2003 (Spring Semester): Visiting Assistant Professor, Purdue University, Dept. of Mathematics, U.S.A.

2003 (Fall Semester) - 2008: Visiting Instructor, University of the Aegean, Department of Statistics and Actuarial-Financial Mathematics.

2008-2014: Faculty member, Assistant Professor, University of the Aegean, Department of Statistics and Actuarial - Financial Mathematics.

2013-2014 (Fall Semester): Research Scholar, Eastern Michigan University , Dept. of Mathematics and Statistics ,U.S.A.

2014 - 2018: Faculty member, Associate Professor, University of the Aegean, Department of Mathematics.

2018 - 2022: Faculty member, Associate Professor, University of the Aegean, Department of Statistics and Actuarial-Financial Mathematics.

2022 - : Faculty member, Professor, University of the Aegean, Department of Statistics and Actuarial-Financial Mathematics.

10/04 - 16/05/2025: : Research Scholar, Institute of Mathematics , University of Siedlce, Poland.

 

Research Interests:

Set theory, General Topology, Logic, with emphasis on the role of the Axiom of Choice in these fields, models of ZFA and ZF set theory in which the Axiom of Choice fails.

 

Distinctions:

“Award for Excellence in Teaching”, School of Sciences of the University of the Aegean, May 15, 2013.

 

Thesis Supervision:

N. M. Radisis, The Axiom of Choice in Graph Theory, Master's Thesis, Department of Mathematics, Aristotle University of Thessaloniki, February 2017. 

N. M. Radisis, Bases for vector spaces in ZF set theory. Undergraduate Thesis, Department of Mathematics, University of the Aegean, September 2013.  

 

Administrative work:

Coordinator of the Committee of Undergraduate Studies,

Member of the Group of Internal Evaluation of the Department,

Member of the Committee of Graduate Admission Examinations.