We show that if a big set of integer points S ⊆ [0, N] d, d > 1, occupies few residue classes mod p for many primes p, then it must essentially lie in the solution set of some polynomial equation of low degree. This answers ...

This thesis is divided into two parts: Part I: Inverse zero-sum problems.We start presenting an overview on Zero-Sum Theory. In particular, we present the main results and conjectures concerning the following invariants: ...

The street forestation is an important environmental element that mitigates the effects which the process of urbanization on the environment causes. There are various factors that relate to the good development of trees ...

Plant soil compaction poses a serious problem to agriculture because it produces different types of changes in plant characteristics. No method has been implemented to date to use root morphological changes as indicators ...

La presente tesis trata acerca de un Proyecto de Factibilidad para la Instalación de un Camal Frigorífico en la Provincia de San Martin, de la Región de San Martín, la cual surge como una forma de solucionar en parte la ...