Journal of Algebra, Number Theory: Advances and ApplicationsAuthor's: Mohammed Elhassani Charkani and Ahmed Najim
Pages: [27] - [45]
Received Date: July 31, 2015
Submitted by:
DOI: http://dx.doi.org/10.18642/jantaa_7100121527
For a commutative and unitary ring R, we characterize the
classes of a classical equivalence relation defined on extensions of
an 
which is R-projective by another
The modules that are extensions of an
which is R-projective by an
have a fairly simple form which we denote
by 
where f is an R-homomorphism
from 
to 
For 
and f as in the foregoing, but
is not necessarily R-projective, we
search to classify the 
extension of modules, globally isomorphic modules, polynomial ring, strongly similar matrices.
