This introduction to the fundamental theories of equilibrium statistical mechanics is self-contained and easily accessible to undergraduate students. Fundamental principles and simple physical examples are particularly emphasized. In preparation: R. Kubo et al., Statistical Physics II. (Springer Series in Solid-State Sciences, Vol. 31). 2nd ed. 1991. ISBN 3-540-53833-X

1. General Preliminaries.- 1.1 Overview.- 1.2 Averages.- 1.3 The Liouville Theorem.- 2. Outlines of Statistical Mechanics.- 2.1 The Principles of Statistical Mechanics.- 2.2 Temperature.- 2.3 External Forces.- 2.4 Subsystems with a Given Temperature.- 2.5 Subsystems with a Given Pressure.- 2.6 Subsystems with a Given Chemical Potential.- 2.7 Fluctuation and Correlation.- 2.8 The Third Law of Thermodynamics, Nernst's Theorem.- 3. Applications.- 3.1 Quantum Statistics.- 3.2 Ideal Gases.- 3.3 Classical Systems.- 4. Phase Transitions.- 4.1 Models.- 4.2 Analyticity of the Partition Function and Thermodynamic Limit.- 4.3 One-Dimensional Systems.- 4.4 Ising Systems.- 4.5 Approximate Theories.- 4.6 Critical Phenomena.- 4.7 Renormalization Group Method.- 5. Ergodic Problems.- 5.1 Some Results from Classical Mechanics.- 5.2 Ergodic Theorems (I).- 5.3 Abstract Dynamical Systems.- 5.4 The Poincaré and Fermi Theorems.- 5.5 Fermi-Pasta-Ulam's Problem.- 5.6 Third Integrals.- 5.7 The Kolmogorov, Arnol'd and Moser Theorem.- 5.8 Ergodic Theorems (II).- 5.9 Quantum Mechanical Systems.- General Bibliography.- References.- Subject Index,.