This work is of interest to those people who find in mathematics the universal language with which they can explain the phenomena that occur in our environment and, of course, for those who see in it a door that will take them to the search for knowledge oriented to scientific and technological development.
In addition, it contains the topics that are usually taught in an initial course of discrete mathematics at the university level, as a basis for a solid academic education. Its main objective is to present the contents in a rigorous and attractive way. Here more than 300 examples are developed and about 500 exercises are proposed, the vast majority with solution.
In this fifth edition new examples and exercises have been incorporated, and special care has been taken in the presentation of the topics, so that they are as explanatory as possible; Even topics can be developed in a self-taught way. A lot of solutions have also been included in the proposed exercises; in others, the final answer or some suggestion to guide towards the solutions. In this new edition, the reading public will find greater freshness and fluidity in the presentation of the themes.