Abstract
The natural numbers are the numbers that we count with; that is, the numbers 1, 2, 3, 4, 5, 6 and so on. We describe the basic properties of the natural numbers. We explain why the product of two negative integers is positive. We prove that there is no largest prime number, and discuss two famous unsolved problems about prime numbers.
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Rosenthal, D., Rosenthal, D., Rosenthal, P. (2018). Introduction to the Natural Numbers. In: A Readable Introduction to Real Mathematics. Undergraduate Texts in Mathematics. Springer, Cham. https://doi.org/10.1007/978-3-030-00632-7_1
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DOI: https://doi.org/10.1007/978-3-030-00632-7_1
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Publisher Name: Springer, Cham
Print ISBN: 978-3-030-00631-0
Online ISBN: 978-3-030-00632-7
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