Back Matter Last updated Sep 5, 2021 Save as PDF 9.S: Finite and Infinite Sets (Summary) Index Page ID24049 ( \newcommand{\kernel}{\mathrm{null}\,}\) IndexAppendix A: Guidelines for Writing Mathematical ProofsAppendix B: Answers for the Progress ChecksAppendix C: Answers and Hints for Selected ExercisesAppendix D: List of SymbolsDetailed Licensing