Numerical semigroups and applications
  The aim of this manuscript is to give some basic notions related to numerical semigroups, and from these on the one hand describe a classical application to the study of singularities of plane algebraic curves, and on the other, show how numerical semigroups can be used to obtain handy examples of nonunique factorization invariants. 
Abdallah Assi (LAREMA), Pedro A. Garc\'ia-S\'anchez
math.AG math.AC