The present book is the first issue of a series explaining various terms and concepts in Mathematics. It introduces the topics, definitions, main results and theorems (generally) avoiding proofs of the results. The top- ics are arranged in alphabetical order starting from Algebra (Classical) and cover up to Geometry (3-dimensional Coordinate) in the present volume. Further topics are included in the forthcoming volumes. The subject matter is presented here in fifteen chapters of which the first one lists few results referred to in the later discussion. The next fourteen chapters cover the material on main topics of Algebra (Classi- cal), Algebraic Structures, Arithmetic, Calculus (Differential), Calculus (Integral), Complex variable, Determinants, Differential Equations (Or- dinary), Differential Equations (Partial), Diffusion Equation, Dynamics, Fourier Transforms of Functions, Geometry (Coordinate: 2-dimensional) and Geometry (Coordinate: 3-dimensional). For more details, please visit https://centralwestpublishing.com