This advanced text introduces to the advanced undergraduate and graduate student the mathematical foundations of the methods needed to carry out practical applications in electronic molecular quantum mechanics, a necessary preliminary step before using commercial programmes to carry out quantum chemistry calculations.

Major features of the book include:

• Consistent use of the system of atomic units, essential for simplifying all mathematical formulae
• Introductory use of density matrix techniques for interpreting properties of many-body systems
• An introduction to valence bond methods with an explanation of the origin of the chemical bond
• A unified presentation of basic elements of atomic ... Read moreand molecular interactions

The book is intended for advanced undergraduate and first-year graduate students in chemical physics, theoretical and quantum chemistry. In addition, it is relevant to students from physics and from engineering sub-disciplines such as chemical engineering and materials sciences.