Sequences and Series of Real Numbers
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The elementary theories of real-valued functions of a real variable and of numerical sequences and series are treated in any standard calculus text. In most cases, however, the proofs are given in appendices and omitted from the main body of the course. To give rigorous proofs of the basic theorems on convergence, continuity, and differentiability, one needs a precise definition of real numbers. One way to achieve this is to start with the construction of real numbers from the rational ones by means of Dedekind Cuts.