Partial differential equations (PDEs) are mathematical equations that involve multiple independent variables and their partial derivatives. PDEs are used to describe and model a wide range of physical phenomena and natural processes, such as heat conduction, fluid dynamics, and electromagnetism. Research in the field of PDEs typically focuses on studying the properties and behavior of solutions to these equations, as well as developing numerical methods for solving them. PDEs are a fundamental tool in many areas of applied mathematics, physics, and engineering, and are essential for understanding complex systems and predicting their behavior. Some key topics in PDE research include existence and uniqueness of solutions, stability analysis, qualitative properties of solutions, and boundary value problems. Researchers in this field use a combination of analytical techniques, numerical simulations, and computational algorithms to study and solve PDEs.