Mathematics in the Modern World expresses the importance and utility of mathematics in daily life, other forms of activities, and various contexts within the contemporary world. It contains a wide range of topics and provides glimpses into different ways of thinking mathematically. These topics include number systems and numeration, algebraic identifies, graphs and geometry, sets, relations, functions and mappings, logic and proof, modern world applications, modeling, and simulation. These examples may serve as starting points for exploring mathematical ideas that are unfamiliar but have potential relevance in everyday life, work or society.