### Schwarzschild and Kerr Solutions of Einstein’s Field Equation

21 abril, 2015

Starting from Newton’s gravitational theory, we give a general introduction into the spherically symmetric solution of Einstein’s vacuum field equation, the Schwarzschild(-Droste) solution, and into […]

### Brief introduction to tropical geometry

18 abril, 2015

The paper consists of lecture notes for a mini-course given by the authors at the Gökova Geometry & Topology conference in May 2014. We start […]

### Light and Matter

16 abril, 2015

If you drop your sho e and a coin side by side, they hit the ground at the same time. Why do esn’t the sho […]

### Resolución rápida del cubo de Rubik

15 abril, 2015

El cubo de Rubik es uno de los puzzles más extendidos del mundo, creado por Ernö Rubik en 1974. Dicho cubo alcanzó gran fama como […]

### A First Course in Linear Algebra

14 abril, 2015

This text is designed to teach the concepts and techniques of basic linear algebra as a rigorous mathematical subject. Besides computational proficiency, there is an […]

### Las matemáticas del cubo de Rubik

11 abril, 2015

En este artículo mostramos cómo podemos utilizar el cubo de Rubik para presentar algunos conceptos básicos de la teoría de grupos y cómo podemos utilizar […]

### El cubo de Rubik y otros pasatiempos matemáticos

10 abril, 2015

El cubo mágico, con su desconcertante habilidad para sembrar la confusión de forma instantánea nos proporciona un ejemplo excelente de acción de un grupo sobre […]

### Introduction to Chemistry

9 abril, 2015

Chemistry affects every area of our lives. Here is just one example of chemistry in action – the making of soaps. Soap was once made […]

### Fundamentals of Calculus

7 abril, 2015

A textbook covering the first semester of a freshman calculus course. Brief Contents: An informal introduction to the derivative Limits; techniques of differentiation The second […]

### Fundamentals of Mathematics

7 abril, 2015

Fundamentals of Mathematics is a work text that covers the traditional topics studied in a modern prealgebra course, as well as the topics of estimation, […]