Süer, M., İlhan, S. (2012). Some extensions of a class of pseudo symmetric numerical semigroups. Selcuk Journal of Applied Mathematics, 13(1), pp.69-74.
Abstract
In this paper, we will give some results about some extensions of
a pseudo symmetric numerical semigroup in the form of S =< 3, 3 + s, 3 +
2s > for s ∈ Z+ and 3 - s.