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http -> https (the question was bumped anyway)
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Martin Sleziak
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You need set theory to have measure theory and you need measure theory to have the analysis required to support, for example, Fourier seriesFourier series. Really, most of what is going on in real analysis (and hence in calculus) depends on having a predictable understanding of how infinite sums, sequences, and sets behave.

So, elementary set theory and the ideas about infinite sets in particular are crucial for all kinds of "practical" math.

You need set theory to have measure theory and you need measure theory to have the analysis required to support, for example, Fourier series. Really, most of what is going on in real analysis (and hence in calculus) depends on having a predictable understanding of how infinite sums, sequences, and sets behave.

So, elementary set theory and the ideas about infinite sets in particular are crucial for all kinds of "practical" math.

You need set theory to have measure theory and you need measure theory to have the analysis required to support, for example, Fourier series. Really, most of what is going on in real analysis (and hence in calculus) depends on having a predictable understanding of how infinite sums, sequences, and sets behave.

So, elementary set theory and the ideas about infinite sets in particular are crucial for all kinds of "practical" math.

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S. Donovan
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You need set theory to have measure theory and you need measure theory to have the analysis required to support, for example, Fourier series. Really, most of what is going on in real analysis (and hence in calculus) depends on having a predictable understanding of how infinite sums, sequences, and sets behave.

So, elementary set theory and the ideas about infinite sets in particular are crucial for all kinds of "practical" math.