Kronheimer–Mrowka basic class

The Kronheimer–Mrowka basic class is a concept from the study of four-dimensional manifolds, particularly in the context of gauge theory and algebraic topology. It arises in the work of Peter Kronheimer and Tomasz Mrowka, particularly in their development of a theoretical framework for studying the topology of four-manifolds through the lens of gauge theory, specifically using the Seiberg-Witten invariants.