Complex sentence: In algebra, which is a broad division of mathematics, abstract algebra is a usual name for the sub-area that studies for themselves algebraic structures such as groups, rings, fields, modules, vector spaces, and algebras.
Split into simpler sentences: In algebra, which is a broad division of mathematics, abstract algebra is a common name for the sub-area that studies algebraic structures in their own right. Such structures include groups, rings, fields, modules, vector spaces, and algebras.