A Course in Abstract Algebra About the Author Dr Vijay K Khanna was with Kirori Mal College, University of Delhi, where he taught UG and PG students for over 43 years. His other publications include Lattices & Boolean Algebras, Solid Geometry and Business Mathematics, all published by Vikas.  Dr S K Bhambri was also with Kirori Mal College, University of Delhi, where he taught UG and PG students for 42 years. He is co-author of Business Mathematics, published by Vikas.