This book is the result of a collective effort that goes far beyond the individual work of its authors. We would like to express our deepest gratitude to everyone who has contributed in some way to making this book a reality.First of all, we would like to thank the educational and research institutions, which provided us with a learning environment, an exchange of knowledge and an incentive for scientific research, essential elements for the construction of this material.To our families and friends, for their unconditional support, understanding and patience during the long hours of study, writing and revision. Your presence and encouragement were fundamental in keeping us going on this journey.