# Exploitation of a special-relativistic entropy identity for one component of a multi-component system

## TL;DR

This paper explores the thermodynamics of a single component within a special-relativistic multi-component system using an entropy identity, addressing both equilibrium and non-equilibrium states and examining the free component case.

## Contribution

It introduces a novel approach to analyze the thermodynamics of a specific component in relativistic multi-component systems via an entropy identity.

## Key findings

- Derived thermodynamic relations for a component in relativistic systems
- Analyzed equilibrium and non-equilibrium thermodynamics
- Examined the special case of a free component

## Abstract

Non-equilibrium and equilibrium thermodynamics of an interacting component of a special-relativistic multi-component system is discussed by using an entropy identity. The special case of the corresponding free component is considered.