I am a research mathematician interested in Real & Functional Analysis, Operator Theory, Linear Algebra and Measure Theory. I am also always on the hunt for good books for these topics to be prescribe to my students. Present adoption: 1) Real Analysis - Elements of Real Analysis by Robert Bartle 2) Functional Analysis - Introductory Functional Analysis With Applications by Kreyszig 3) Linear Algebra - Linear Algebra by Stephen H. Friedberg, Arnold J. Insel and Lawrence E. Spence 4) Measure Theory - Measure Theory by P. R. Halmos.