Abstract
An infinite series is an expression of the form a 1 + a 2 + a 3 + ⋯, where each a i is a real number. We discuss the question of when an infinite series has a “sum” in a precise sense that we will explain. A series that does have such a sum is said to “converge.” The basic properties of convergence of infinite series are rigorously proven. In particular, it is shown that every “infinite decimal” converges.
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Rosenthal, D., Rosenthal, D., Rosenthal, P. (2018). An Introduction to Infinite Series. In: A Readable Introduction to Real Mathematics. Undergraduate Texts in Mathematics. Springer, Cham. https://doi.org/10.1007/978-3-030-00632-7_13
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DOI: https://doi.org/10.1007/978-3-030-00632-7_13
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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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