Matemáticas, 2

En esta tesis se estudian varios métodos de obtención de la distribución asintótica débil de ceros de las soluciones de ciertas familias uniparamétricas de ecuaciones diferenciales lineales de segundo orden. Concretamente, de aquellas familias cuyos coeficientes son funciones polinómicas en la variable independiente y meromorfas en el parámetro. En el capítulo 1 se revisan varios de los métodos más populares que se utilizan para abordar el problema: método de descenso más rápido, método de Darboux, método basado en la ortogonalidad, método basado en la aproximación WKB,...

En este texto se encuentran combinados, con rigos y sencillez excepcionales, los fundamentos de los métodos propios del álgebra lineal para la resolución de sistemas de ecuaciones, los cálculos de vectores y vectores propios, con las técnicas numéricas más adecuadas. También debe resaltarse el desarrollo completo de los algoritmos correspondientes, así como su programación en BASIC, para los numerosos métodos de resolución presentados.

One of the risks during pregnancy, with high negative impact on both pregnant and fetus, is cardiovascular disease suffering. Early diagnosis and proper treatment of this pathology significantly reduces the risk for pregnant. This problem is characterized by the insufficient availability of experts with knowledge of medical specialties involved, making it difficult to both the diagnosis process and the selection of appropriate treatment. In addition, in the treatment of this problem, there are situations of indetermination, uncertainty, vagueness, and incomplete data, hence the need to create ...

Pedro Nunes played a major part in the discovery of the world by Portuguese mariners. In this book, his mathematical and scientific achievements are described, together with evidence on his life and friends arising from a collection of his Greek and Latin poems, and from religious notes he composed during his later years. An English version of his long-lost Portuguese algebra is included, as well as poems and letters by his friends translated into English for the first time. These discoveries came from a manuscript recently found in the municipal library of Evora, the perfectly preserved...