Comparison of Thermodynamic Characteristics in Ordinary Quantum and Classical Approaches and Game Theory

We fix the temperature $T$ and consider mean energy and Boltzmann-Gibbs-Shannon entropy as two players of a game. As a result, basic formulas for the ordinary quantum mean energy and the Boltzmann-Gibbs-Shannon entropy are derived. We compare also the quantum and classical approaches without a demand for Plank’s constant being small. Important inequalities for statistical sum, quantum energy, quantum entropy, and their classical analogs follow.