11 citations · 23 across the 5 of their papers we have counts for
5 papers
Partial Order in the Normal Category Arising from Normal Bands
C S Preenu, A R Rajan, K S Zeenath
The notion of normal category was introduced by KSS Nambooripad in connection with the study of the structure of regular semigroups using cross connections\cite{nambooripad1994theo…
The mathematical work of K.S.S. Nambooripad
John Meakin, P. A. Azeef Muhammed, A. R. Rajan
We provide an overview of the mathematical work of K.S.S. Nambooripad, with a focus on his contributions to the theory of regular semigroups. In particular, we outline Nambooripad'…
Cross-connections of the singular transformation semigroup
P. A. Azeef Muhammed, A. R. Rajan
Cross-connection is a construction of regular semigroups using certain categories called normal categories which are abstractions of the partially ordered sets of principal left (r…
Cross-connections of completely simple semigroups
Azeef Muhammed P A, A R Rajan
A completely simple semigroup S is a semigroup without zero which has no proper ideals and contains a primitive idempotent. It is known that S is a regular semigroup and any comple…
Normal category of partitions of a set
A. R. Rajan, Azeef Muhammed P A
Let be the semigroup of all non-invertible transformations on an arbitrary set . It is known that is a regular semigroup. The principal right(left) ideals of a regul…