Proofs and concepts : the fundamentals of abstract mathematics
Dave Witte Morris, Joy Morris, P. D. Magnus, Open Textbook Library (Distributor)
"This free undergraduate textbook provides an introduction to proofs, logic, sets, functions, and other fundamental topics of abstract mathematics. It is designed to be the textbook for a bridge course that introduces undergraduates to abstract mathematics, but it is also suitable for independent study by undergraduates (or mathematically mature high-school students), or for use as a very inexpensive supplement to undergraduate courses in any field of abstract mathematics."--Open Textbook Library
Website, English, 2016
Dave Witte Morris and Joy Morris, [Place of publication not identified], 2016