What does AJR mean inside the band of a ring?

In the context of a band of a ring, "AJR" typically refers to the "Alder-Jacobson-Roberts" theorem, which deals with the properties of rings and ideals. However, if "AJR" is used in a different context within ring theory or mathematics, clarification would be needed. Generally, acronyms like AJR can have various meanings depending on the specific mathematical framework or subject matter being discussed.