2: Sets Last updated Save as PDF Page ID 89268 Stephen Davies University of Mary Washington via allthemath.org 2.0: Introduction 2.10: Subsets 2.11: Power sets 2.12: Partitions 2.13: Exercises 2.1: The idea of a set 2.2: Defining sets 2.3: Finite and infinite sets 2.4: Sets are not arrays 2.5: Sets are not ordered pairs (or tuples) 2.6: Sets of sets 2.7: Cardinality 2.8: Some special sets 2.9: Combining sets