Quantum Statistical Models of Hot Dense Matter : Methods for Computation Opacity and Equation of State The widely used theoretical models for calculating properties of hot dense matter are studied in this book. Calculations using the presented formulas and algorithms are illustrated by plots tables and also are compared with experimental results. The purpose is to help understanding atomic physics in hot plasma and in developing efficient and robust computer codes for calculating opacity and equations of state for arbitrary material in a wide range of temperatures and densities.Key features: complicated problems of atomic physics are clearly presented most parts of the book are accessible to students models are reduced to formulas and algorithms emphasis on computational aspects of the models in particular on the computation of opacity and the equations of state for high temperature plasmas. This book studies the widely used theoretical models for calculating properties of hot dense matter. Calculations are illustrated by plots and tables and they are compared with experimental results. The purpose is to help understanding of atomic physics in hot plasma and to aid in developing efficient and robust computer codes for calculating opacity and equations of state for arbitrary material in a wide range of temperatures and densities.