Tsichlias Charalambos
              
              
              Assistant Professor, Department of Mathematics, Aegean University
              Office: Provatari Building, office I3
              Phone: ++30 22730 82144
              E-mail: tsichlias@aegean.gr
              
              Education:
              Undergraduate Studies : Department Of Mathematics, University of
              Ioannina, 1995
              M.Sc. in Mathematics, Department Of Mathematics, University of
              Ioannina, 1997
              Ph.D., Department Of Mathematics, University of Ioannina, 2005
              (phd supported by a scholarship from State Scholarships
              Foundation, I.K.Y.)
              
              Courses 2022-2023:
              Winter Semester: Elementary Analytic Geometry (undergraduate
                               
                             
                  program),
                            
                            Differential
                          Geometry 
              (postgraduate 
              program)
              Summer Semester: Differential Geometry 
              (undergraduate  program).
              
              Office hours for students:  Monday 09:00-10:30. Also another time under arrangement.
              
              
              Scientific Interests: Riemannian Geometry, Contact Geometry.
              
              Papers:
              1. Koufogiorgos Themis and Tsichlias Charalambos, Helicoidal
              surfaces of a special Weingarten type. Proceedings of the 3rd
              Panhellenic Congress of Geometry (Athens, 1997), 106, Univ.
              Athens, Athens, 1998.
              2. Koufogiorgos Themis and Tsichlias Charalambos, On the existence
              of a new class of contact metric manifolds. Canad. Math. Bull. 43
              (2000), no. 4, 440--447.
              3. Koufogiorgos Themis and Tsichlias Charalambos, Generalized
              (κ,μ)-contact metric manifolds with ||gradκ||= constant. J. Geom.
              78 (2003), no. 1-2, 83--91.
              4. Koufogiorgos Themis and Tsichlias Charalambos, Generalized
              (κ,μ)-contact metric  manifolds with ξμ=0. Tokyo J. Math. 31
              (2008), no. 1, 39--57.
              5. Koufogiorgos Themis and Tsichlias Charalambos, Three
              dimensional contact metric manifolds with vanishing Jacobi
              operator. Contributions to Algebra and Geometry.   50
              (2009), νo. 2, 563-573.
              6. Koufogiorgos, T.; Markellos, M.; Tsichlias, C. Tangent sphere
              bundles with constant trace of the Jacobi operator. Beitr. Algebra
              Geom.  53  (2012),  no. 2, 551--568.
              7. Markellos, Michael; Tsichlias, Charalambos Contact metric
              structures on S3.  Kodai Math. J.  36 
              (2013),  no. 1, 154–166.
              8. Koufogiorgos, T.; Tsichlias, C. Contact metric three-manifolds
              with constant scalar torsion. J. Aust. Math. Soc. 107 (2019), no.
              2, 234--255