Mathematics: a Complete Introduction by Hugh Neill (2013, Trade Paperback)

Calculus of Variations by S. V. Fomin and I. M. Gelfand (2000, Trade Paperback)

Fundamental Concepts of Geometry by Bruce E. Meserve (2010, Trade Paperback)

Linear Algebra and Matrix Theory by Robert Roth Stoll (2012)

Dover Books on Mathematics Ser.: Proof Theory by Gaisi Takeuti (2013, Paperback)

Set Theory and Logic by Robert R. Stoll (1979, Trade Paperback)

An Introduction To Linear Algebra & Tensors

Bridging the Gap to University Mathematics by Edward Hurst and Martin Gould