Abstract
Among the most basic topics taught in elementary school mathematics are operations such as addition and multiplication of numbers. Each such operation takes two numbers, and produces a single resulting number. Another type of operation is negation of numbers, which takes a single number and produces another number. We can formalize both these types of operations using sets and functions.
Don’t just read it; fight it! Ask your own questions, look for your own examples, discover your own proofs.
Paul Halmos (1916–)
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© 2003 Birkhäuser Boston
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Bloch, E.D. (2003). Selected Topics. In: Proofs and Fundamentals. Birkhäuser Boston. https://doi.org/10.1007/978-1-4612-2130-2_7
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DOI: https://doi.org/10.1007/978-1-4612-2130-2_7
Publisher Name: Birkhäuser Boston
Print ISBN: 978-1-4612-7426-1
Online ISBN: 978-1-4612-2130-2
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