Homological algebra and module theory constitute a vibrant area of contemporary mathematics, interweaving concepts from algebra, topology and geometry. At its core, homological algebra studies chain ...

The Nappi-Witten Lie algebra was first introduced by C. Nappi and E. Witten in the study of Wess-Zumino-Novikov-Witten (WZNW) models. They showed that the WZNW model (NW model) based on a central ...

1 School of Mathematics, Shanghai University of Finance and Economics, Shanghai, China. The category of left -comodule is denoted by. For more about modules and comodules, see [1] -[3] . (a1) is a ...

Department of Higher Algebra, Faculty of Mechanics and Mathematics, M. V. Lomonosov Moscow State University, Leninskiye Gory, D.1, Main Building, GSP-1, 119991 Moskva, Russia Moscow State Technical ...

Abstract Algebra This is an implementation of Finite Algebras in Python: Groups, Rings, Fields, Vector Spaces, Modules, Monoids, Semigroups, Magmas (Groupoids), regular (matrix) representations, ...