Understanding the concepts of stereochemistry, prochirality, and topicity is crucial for chemists in all fields. Shinsaku Fujita presents chemical group theory differently from conventional textbooks. The author's approach emphasizes conjugate subgroups to solve discrete stereochemical problems. He introduces several new concepts, integrating point-group and permutation-group representations, and treats stereochemistry much more comprehensively. This advanced textbook on organic stereochemistry, symmetry, chirality, combinatorial enumeration, graph theory and group theory is intended for graduate students and researchers in organic chemistry, theoretical chemistry and applied mathematics.