JAN SMUTS AND HIS INTERNATIONAL CONTEMPORARIES BY O. GEYSER

"JAN SMUTS AND HIS INTERNATIONAL CONTEMPORARIES" BY O GEYSER. SOFTCOVER IN EXCELLENT CONDITION, NO INSCRIPTIONS OR NAMES, 257 PAGES, 2001.

"Corings and comodules are fundamental algebraic structures, which can be thought of as both dualisations and generalisations of rings and modules. Introduced by Sweedler in 1975, only recently they have been shown to have far reaching applications ranging from the category theory including differential graded categories through classical and Hopf-type module theory to non-commutative geometry and mathematical physics. This is the first extensive treatment of the theory of corings and their comodules. In the first part, the module-theoretic aspects of coalgebras over commutative rings are described. Corings are then defined as coalgebras over non-commutative rings." - Online summary