REMOVAL OF G. N. KUPRIYANOV

On the Finite Groupoid G(n)

In this paper we study the existence of commuting regular elements, verifying the notion left (right) commuting regular elements and its properties in the groupoid G(n). Also we show that G(n) contains commuting regular subsemigroup and give a necessary and sufficient condition for the groupoid G(n) to be commuting regular.

Linear preservers of g-row and g-column majorization on M_{n,m}

Let A and B be n × m matrices. The matrix B is said to be g-row majorized (respectively g-column majorized) by A, if every row (respectively column) of B, is g-majorized by the corresponding row (respectively column) of A. In this paper all kinds of g-majorization are studied on Mn,m, and the possible structure of their linear preservers will be found. Also all linear operators T : Mn,m ---> Mn...

N Average of g(n)

Let d n pn the n th prime for n and let dk n jdk n dk n j for k n A well known conjecture usually ascribed to Gilbreath but actually due to Proth in the th century says that dk for all k This paper reports on a computation that veri ed this conjecture for k It also discusses the evidence and the heuristics about this conjecture It is very likely that similar conjectures are also valid for many ...

Removal of PAHs from n-Paraffin by Modified Clinoptilolite

The ability of natural clinoptilolite and its modified forms were studied for removal of PAHs from n-paraffin. Surfactant modified zeolite (SMZ) was obtained by modifying clinoptilolite with hexadecyltrimethylammonium ion. Homoionic forms of zeolite were obtained by ion exchange process using inorganic salts of desirable cations (e.g. Ag+, Fe3+…). Nat...

Endoscopic removal of the Padlock-G clip.