The book consists of XI Parts and 28 Chapters covering all areas of mathematics. It is a tool for scientists, engineers, students, students of many disciplines, teachers, professionals, writers and also for a general reader with an interest in mathematics and in science, as well as for beginners. It provides a wide range of mathematical concepts, definitions, propositions, theorems, and numerous illustrations. Difficulty level can vary depending on chapters, and sustained attention will be required for some. The structure and list of Parts is quite classical: I. Foundations of Mathematics, II. Algebra, III. Number Theory, IV. Geometry, V. Analytic Geometry, VI. Topology, VII. Algebraic Topology, VIII. Analysis, IX. Category Theory, X. Probability and Statistics, XI. Applied Mathematics. Appendices provide useful lists of symbols and tables for ready reference. The purpose and hope is that it will serve the needs of readers, their studies, explorations, work, or researches.