1. C.D. Aliprantis, K.C. Border, Infinite Dimensional Analysis: A Hitchhiker’s Guide, 3rd edn. (Springer, New York, 2007)
2. S. Awodey, Category Theory, 2nd edn. (Oxford University, Oxford, 2010)
3. J.R. Ringrose, R.V. Kadison, Fundamentals of the Theory of Operator Algebras, in Advanced Theory (Graduate Studies in Mathematics, vol. 16), vol. 2 (American Mathematical Society, New York, 1997)
4. W. Rudin, Functional Analysis (McGraw-Hill Science, New York, 1991)
5. W. Rudin, Real and Complex Analysis, 3rd edn. (McGraw-Hill Science, New York, 1987)