Papers

Papers

  1. Kennzeichnung der geodaetischen Abstandssphaeren in E...   Mathematische Annalen 248(1979) pp 230-240.
  2. Kennzeichnung der geodaetischen Abstandssphaeren in H...   Mathematishe Annalen 251(1980) pp.151-170.
  3. On the shadow Lines of a convex surface. Acta Math. Hung. 41(1983) pp. 219-224.
  4. On the maximum rank of a tensor product. Acta Math. Hung. 45(1983) pp. 95-97.
  5. On the existence of a circle enveloping; a family of circles Amer. Math. Monthly 92(1985) p.287 
  6. The topology of the set of real mxn matrices of rank k. Rev. Roum. Math. 31(1986) pp. 247-250. 
  7. A remark concerning a mechanical characterization of the sphere. Proceedings of AMS 96(1986). pp. 648-650.
  8. On the C-curves of a Convex Surface. Math. Nachr. 139(1988) 31-35.
  9. On the dimension of the image of a multilinear function. Journal of Linear and Multil. Algebra . 20(1990) pp.323-327.
  10. Surfaces of E satisfying certain restrictions on their normal bundle  (with T. Chassanis, D. Koutroufiotis) Transactions of AMS 319(1990) pp.329-347.
  11. Surfaces with isometric geodesics.(with C. Charitos)  Edinburgh. M.S. 1991(34) 359-362
  12. Apollonian Cubics: An Application of Group Theory to a Problem in Euclidean Geometry Cubics (with A. Thoma Mathematics Magazine 72 (5) (1999) 356-366 
  13. On Some Actions of D3 on the triangle. Forum Geometricorum 4(2004) 157-176 [Download pdf-file] 
  14. On the cyclic complex of a cyclic quadrangle. Forum Geometricorum 6(2006) 29-46 [Download pdf-file] 
  15. Orthocycles, bicentrics, and orthodiagonals. Forum Geometricorum 7(2007) 73-86 [Download pdf-file] 
  16. On the Newton line of a quadrilateral. Forum Geometricorum 9(2009) 81-98 [Download pdf-file] 
  17. Conic homographies and bitangent pencils. Forum Geometricorum 9(2009) 229-257 [Download pdf-file] 
  18. Three maximal cyclic quadrangles. Forum Geometricorum 10(2010) 99-107 [Download pdf-file] 
  19. Triangles with Given Incircle and Centroid. Forum Geometricorum 11(2011) 27-51 [Download pdf-file] 
  20. On Polygons Inscribed in Other Polygons. Journal for Geometry and Graphics
    Volume 15 (2011), No. 2, 141 - 158. [Download pdf-file] 
  21. On Tripolars and Parabolas. Forum Geometricorum 12(2012) 287-300 [Download pdf-file] 
  22. Pairings of circles and Sawayama's theorem. Forum Geometricorum 13(2013) 117-131. [Download pdf-file] 
  23. The associated harmonic quadrilateral. Forum Geometricorum 14(2014) 15-29. [Download pdf-file] 
  24. A gallery of conics by five elements. Forum Geometricorum 14(2014) 295-348. [Download pdf-file] 
  25. Ellipse generation related to orthopoles. Journal of Classical Geometry 3(2014) 1-23. [Download pdf-file] 
  26. Droz-Farny, an inverse view. Mathematical Reflections 2(2015) 1-4. [Download pdf-file] 
  27. Some remarks on a Sangaku from Chia. Forum Geometricorum 15(2015) 275-280. [Download pdf-file] 
  28. The triangle construction {α,b-c,tA}. Forum Geometricorum 16(2016) 115-117. [Download pdf-file] 
  29. A Characterization of the Parallelogram. Mathematical Reflections 3(2016) 1-3. [Download pdf-file] 
  30. On the Diagonal and Iscribed Pentagons of a Pentagon. Forum Geometricorum 16(2016) 207-225. [Download pdf-file] 
  31. A Characterization of the Rhombus. Forum Geometricorum 16(2016) 331-336. [Download pdf-file] 
  32. Putting the icosahedron into the octahedron. Forum Geometricorum 17(2017) 63-71. [Download pdf-file] 
  33. Gergonne meets Sangaku. Forum Geometricorum 17(2017) 143-148. [Download pdf-file] 

Books
I like reading but I like also writing. There are lots of notes and drafts used in mylectures. Most of them are in Greek. The following books grew up from lectures. They are in reality notes, short and informative, with many topics discussed in the exercises.

From the second and the fourth I have only one reprint. Geometry is still available and Fortran IV(1961) is now on ... Fortran 2000. Anyway, I use it now and then for the algorithms and formulas it contains. The fourth book was inspired from the lectures of my friend Hans Samelson on Lie-Groups. Stimulated from his lectures, I studied the classification of semi-simple Lie Groups, which is reducible to the classification of their corresponding Lie-Algebras. At that time fascinated me the cooperation of Algebra, Geometry and Topology conveing to this beautiful classification.

Translations
Gilbert Strang, Linear Algebra with applications, published as

Γραμμική Αλγεβρα και Εφαρμογές, Πανεπιστημιακές Εκδόσεις Κρήτης 1995

Positions
University of Bonn (Research Fellow, Instructor), University of Cologne (Research Fellow), University of Essen (Instructor), Univ. of Crete, Dept. of Mathematics (Instructor, Assistant Professor, Associate Professor) University of Cyprus(visiting professor)

Books
Translations
Positions