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"This book deals with the application of density matrix theory to atomic and molecular physics. The aim is to precisely characterize sates by a vector and to construct general formulas and proofs of general theorems. The basic concepts and quantum mechanical fundamentals (reduced density matrices, entanglement, quantum correlations) are discussed in a comprehensive way. The discussion leads up to applications like coherence and orientation effects in atoms and molecules, decoherence and relaxation processes. This third edition has been updated and extended throughout and contains a completely new chapter exploring nonseparability and entanglement in two-particle spin-1/2 systems. The text discusses recent studies in atomic and molecular reactions. A new chapter explores nonseparability and entanglement in two-particle spin-1/2 systems."

"The third edition of this book presents a most comprehensive and up-to-date analysis of population trends and patterns in Singapore since its foundation in 1819 to the present day. Separate chapters are devoted to population growth and distribution, changing population structure, migration, mortality trends and differentials, marriage trends and patterns, divorce trends and patterns, fertility trends and differentials, family planning, abortion and sterilisation, fertility policies and programmes, immigration policies and programmes, labour force and future population trends."