The title of the book is a perfect way to synthesize the point of view of V- cenzo Capasso (VK) about the role played by mathematics in nature and all human activities, as mentioned by Willi J] ager in the Introduction. As VK mentioned in one of his speeches, "it is important that our scienti?c c- munity appreciates the importance of theory and mathematics to face the enormouschallengeswhicharisefromtheemerging?eldsofBiologyandMe- cine, Industry and Economics to improve the quality of Life. " His enthusiasm and new ideas have brought him in this challenging mission. By transferring methods...