Normal subgroups of the Hecke group H (√2)

İ.n. CANGÜL

On the focal surfaces of the congruences generated by the instantaneous screwing axes connected with some surfaces

Türkan GÜL

On Holditch's theorem and polar inertia momentum

Erol KILIÇ

On the relations between lp norms for matrices

Dursun TAŞCI

Symmetric R-Spaces

Kadri ASLAN

Immersions of Lorentzian submanifolds into R1m with pointwise 2-planar sections and on the circles and pseudo spheres in Lorentzian geometry

C. MURATHAN