New York Journal of Mathematics
Volume 5 (1999) 139-142


Ice B. Risteski, Kostadin G. Trenčevski, and Valéry C. Covachev

A Simple Functional Operator

Published: September 29, 1999
Keywords: functional operator, bar construction
Subject: 39B

In this paper a new linear operator Ψ is defined such that Ψ ∘ Ψ =0. The general analytic solution of the vector functional equation Ψf=0 is given.


The third author is supported in part by the Bulgarian Science Fund under Grant MM-706.

Author information

Ice B. Risteski:
Bratfordska 2/3-9, 91000 Skopje, MACEDONIA

Kostadin G. Trenčevski:
Institute of Mathematics, St. Cyril and Methodius University, P. O. Box 162, 91000 Skopje, MACEDONIA

Valéry C. Covachev:
Institute of Mathematics, Bulgarian Academy of Sciences, 8 Acad. G. Bonchev Str., 1113 Sofia, BULGARIA