J. Ambrosiewicz

A factorization of elements in PSL(2, F), where F = Q, R

T. Poomsa-ard

Hyperidentities in associative graph algebras

K. Denecke, K. Mahdavi

The order of normalform hypersubstitutions of type (2)

Z. Cao, A. Grytczuk

Some classes of Diophantine equations connected with McFarland`s and Ma`s conjectures

Z. Cao, X. Dong

Diophantine equations and class number of imaginary quadratic fields

I. Chajda, Z. Moravkova

Relatively complemented ordered sets

Z. Heleyova

Congruences on pseudocomplemented semilattices

L. Iancu, M.S. Pop

Localization in semicommutative (m,n)-rings

S. Hong, S.J. Kim, S.Z. Song, S.D. Yang, Y.B. Yun

Linear operators preserving maximal column ranks of nonbinary boolean matrices