Algebra/Closure/Answers

From Wikibooks, open books for an open world
< Algebra‎ | Closure
Jump to: navigation, search

The purpose of this exercise is to get you to practice using your mathematical intuition. Examples will be given showing which answers are false. The questions that are marked True require us to define our terms. Because all of these sets of numbers have infinite members we would have to use a recursive definition. Creating an argument with a recursive definition requires a proficiency with mathematical language that you'll be ready for after reading this book.