Matemáticas para entender el mundo en que vivimos

Some things are measured by weight, while others are measured by length. For example, markets in France have large blocks of cheese. Some people may want pieces of the block, so they use a scale to measure how much the pieces of cheese weigh. This helps them determine how much their pieces will cost. Markets in India sell fabric. Fabric is measured by length. Markets in China sell rice. Do you think they measure it by weight or by length?

This book presents plane geometry following Hilbert's axiomatic system. It is inspired on R. Hartshome's fantastic book Geometry: Euclid and Beyond, and can be considered as a careful exposition of most of chapter II of that book. It must be remarked that non-euclidean geometries, i.e. geometries not satisfying the fifth postulate of Euclid, enter the scene, in a natural way, from the very beginning. The vast majority of plane geometry texts are only concerned with euclidean geometry, loosing the oportunity of not only teaching rigorous reasoning to freshmen, but at the same time exposing...

El presente manual recoge una colección representativa de los ejercicios realizados en las clases de la asignatura homónima de la Licenciatura en Matemáticas de la Universidad de Cádiz durante el período en que los autores la impartieron. La dificultad de los problemas está secuenciada en orden creciente dentro de cada capítulo para que el lector alcanzar un dominio más que aceptable en esta materia.

What is the arithmetic triangle? What is the purpose of the summation symbol? How did the architects of the 17th century calculate their structures? These and many other questions about Mathematics will be solved in this enjoyable and revealing book.