65 years of professor Ján Srb

In Memory of Professor Ján Horecký - A Personal Recollection

Facing a second major event of computational linguistics in Prague in the history of Czech CL – the ACL Annual Meeting in June 2007 – we cannot leave the first such event – COLING 1982 – unmentioned. But alas – most unfortunately, we have to start with very sad news about the then President of the Congress, Professor Ján Horecký, who died on August 11th, 2006 in his hometown Stupava (near Brati...

EDITORIAL 65 th Birthday of Professor Hauptmann

On Three-dimensional Lorentzian -sasakian Manifolds (dedicated in Occasion of the 65-years of Professor

The object of the present paper is to study three-dimensional Lorentzian -Sasakian manifolds which are Ricci-semisymmetry, locally symmetric and have -parallel Ricci tensor. An example of a three-dimensional Lorentzian -Sasakian manifold is given which verifies all the Theorems.

On Generalized -recurrent Sasakian Manifolds (dedicated in Occasion of the 65-years of Professor

The object of the present paper is to study generalized -recurrent Sasakian manifolds. Here it is proved that a generalized -recurrent Sasakian manifold is an Einstein manifold. We also find a relation between the associated 1-forms A and B for a generalized -recurrent and generalized concircular -recurrent Sasakian manifolds. Finally, we proved that a three dimensional locally generalized -rec...

SOME RESULTS ON (LCS)2n+1-MANIFOLDS (DEDICATED IN OCCASION OF THE 65-YEARS OF PROFESSOR

In this paper we study Lorentzian Concircular Structure manifolds (briefly (LCS)2n+1-manifold ) and obtain some interesting results.