We estimate the strength of the coupling of a neutral massive gauge boson, identified as Z’, with a bottom quark and a strange quark through the B0s → μ+ μ- process. With this parameter the effect on the branching ratios ...

Any hyperbolic 3-manifold that is a circle of punched tori, can be seen as (…), where T * denotes the punched torus and (…) is a homeomorphim conjugated to a word that is a finite product of matrices (…), All these 3-varieties ...

The compound Sr2FeMoO6 presents a medium-metallic ferromagnetic behavior where the Curie temperature (TC) is of great interest for the application of this material in spintronic devices. It is expected that the TC could ...

This research aims to determine the main factors that influence strategic planning and its socioeconomic development in the conurbation area of Moroleón and Uriangato Guanajuato, Mexico. To this end, the corresponding ...

The present research has as an objective to identify the level of efficiency in the use of the supplies: teachers, students, budget, administrative staff of junior high schools, as well as their existing number in Mexico ...

Avocado production is the most important crop in terms of economic value in Michoacán. Therefore, the expansion of the crop has been exponential in the last 20 years in that state. This question the sustainability of the ...

The main contributions of this doctoral thesis are: 1. Alexander's method for infinite-type surfaces. For any infinite-type surface S possibly with non-empty boundary, there exist a collection τ of essential curves and ...

This document collect the work done by the author in his PhD program. In the theory of Discretely Generated Spaces are solved the Problems 3.19 and 3.3 in [41]. Problem 3.19: Does the space {ξ} ᴜ ω embed into a box product ...

The objective of this research has to determine the causes of low levels of tax collection of Mexico, for which it was raised as a hypothesis that the levels of revenue from Mexico have had a positive relationship with the ...

This research presents a proposal for a public employment policy for university students as an alternative to reduce the high levels of youth unemployment and precarious underemployment in the state of Michoacán de Ocampo. ...