VİTA

 

 

 

Education

 

PhD, Univ. of California, Berkeley, 1979

 

MS, Middle East Technical University, 1975

 

BS, Middle East Technical University, 1973

 

Employment

 

Professor                   

 

4/1989-Present             Middle East  Technical University, Turkey

 

Associate Professor

 

11/1985-4/1989             Middle East Technical University, Turkey

 

Assistant  Professor

 

11/1980-11/1985            Middle East Technical University, Turkey

 

 

Visiting Positions:

 

8/1988-6/1989              Fulbright Scholar at Purdue University,  USA

 

9/1989-12/1989            Visiting Professor at Michigan State University, USA

 

1/1990-4/1990              Fulbright Scholar at University of California, Berkeley, USA.

 

 

 

Research fields: Algebraic and differential topology

 

 Research Interests: Topological K-theory, homotopy theory, vector fields, frame fields on manifolds,   geometric structures on manifolds

 

 

PUBLICATIONS

 

 

·         Mixing homotopy types of (n-1)-connected (2n+1)-manifolds

    METU J. Pure and  Appl.Sci., 13 (1980),  183-192.

 

·         On quaternionic James numbers and almost-quaternion substructures on the sphere

    Proc.Amer.Math.Soc. 86 (1982), 535-540

 

·         On the obstruction to cross sectioning symplectic Stiefel manifolds

    METU J.Pure and Appl.Sci. 15 (1982), 55-58

 

·          Almost-quaternion substructures on the complex sphere

    Proc. of International N. Terzioğlu Symposium, Karadeniz Technical University Math. J. 5 (special issue) (1982), 242-244.

 

·         Almost-quaternion substructures on the canonical Cn-1 - bundle over  S2n-1,

    J. London Math.Soc., Series 2, 28 (1983), 435-442.

 

·         Almost-quaternion (m-1)- structures on S4m-3

                Proc. Amer. Math.Soc. 90 (1984) , 155-156 .

 

·         Non existence of almost-quaternion substructures on the complex projective space

    Canad. Math. Bull. 28 (2) (1985), 231-232

 

·         Construction of almost complex and almost-quaternion substructures on the sphere

    Proc. of Math Symposium, Journal  of Sciences-Atatürk Üniversity Faculty of  Sciences (special issue) ( 1985) 207- 219.

 

·         Turgut Önder, Sections of U(2n)/Sp(s) over S4n-1 ,

    Indag. Math 48, 455-461 (1986).

 

·         Some specialized structures on the subbundles of the tangent bundle of sphere

                Bull. Cal. Math.Soc. Festschrift M.Dutta (1987), 35-40.

 

·         Homotopy groups of some homogeneous spaces and some remarks on their sections over the sphere (with M.Abdelal)

                Rend.Circ.Math Palermo (2), 139 (1990), 381-354.

 

·         Some equivariant specialized structures on the complements of G-fields over the sphere

   Proceedings of the 23rd Conference on Geometry and Topology (Cluj-Napoca 1993), 102-107,  Babeş Bolyai Univ.,  Cluj- Napoca,  1994

 

·         An alternative computation of 2-primary factors of J-orders of Hopf line bundles

    Bulletin of İstanbul Technical University, (special issue : Şuhubi and Continuum Mechanics) 47(4) (1994), 265-274.

 

·         Equivariant frame fields on spheres with complementary equivariant  complex structures

    Manuscripta Math. 86 (1995), 393-407.

 

·         Equivariant cross sections of complex Stiefel manifolds

    Topology and its Applications, 109 (2001), 107-125.

 

·         Orders of elements of equivariant J-groups of complex projective spaces

                Indag. Math., N.S. 13 (2002), 229-247.

·         Equivariant complex structures carried by equivariant plane fields on spheres Preprint (2018)

     

Contributions in Books

 

" Arf Invariant and its applications in Topology"  

 

The Collected Papers of Cahit Arf,   Editor:  T. Terzioğlu, METU Press, Ankara, 1990, 413-416.  Contributions by 

       G.Ikeda, T.Önder, S.Sertöz, C.Tezer

 

      

       Books Edited

 

       Gökova Geometry / Topology Conference Proceedings (1993, 94, 95, 96, 98, 00, 01,  02, 03) ,

       published by The Scientific and Technical Research Council of Turkey and

       distributed by International Press.

       Editors: Selman Akbulut, Turgut Önder,  Ronald Stern.

 

        Gökova Geometry / Topology Conference Proceedings 04/05 (joint issue), 06-17

        (Published and distributed by International Press)

        Editors: Selman Akbulut, Turgut Önder,  Ronald Stern (Denis Auroux after 2008).

        

        Editorial Board Memberships

 

        Managing Editor of Journal of Gökova Geometry-Topology (electronic

        journal)

       Turkish Journal of Mathematics

 

      

       Conference Organization

 

       Gökova Geometry-Topology Conferences (1992-1996, 1998, 2000-2018)