Welcome to my store. Thanks for visiting. My name is Mercedes Orús Lacort. I live in Barcelona (Spain). I am Graduated in Mathematics from the Autonomous University of Barcelona in 1988. I am a teacher of mathematics of university students. After seeing the needs of some of my students, was born in my mind, the idea of gathering the material I already had and which I use in my classes, for the creation of these books. And books that were published with the support of my brother Román Orús Lacort. Junior (Assistant) Professor at Johannes-Guttenberg Universität Mainz . I invite you to visit his website http://www.romanorus.com/