A general equation of state for high density matter from thermodynamic symmetry

A general and simple equation of state (EOS) is a rich source for research discussion. Experience shows that high-density matter exhibits regularities some “universal” EOSs have been established. Here, we present an ideal dense EOS symmetric to the gas by means Oettingen's dual approach. The makes no assumptions about structure is, therefore, general. Thermodynamic symmetry requires has better agreements with at higher densities, which supported empirical equations actual property data various substances. Two derivative variables historically overlooked, i.e., specific work constant entropy temperature, are rejuvenated in EOS. Additionally, find another physical related thermodynamic further give its estimated values several common suggests same theoretical location as It basis theory enriches framework thermodynamics.