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visits member for 3 years, 2 months
seen Aug 17 at 14:22

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awarded  Yearling
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awarded  Curious
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awarded  Inquisitive
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31
accepted $\varepsilon$-$\delta$-definition for continuity of $x^n$
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31
accepted Sequence with an infinite amount of limit points
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31
asked $\varepsilon$-$\delta$-definition for continuity of $x^n$
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31
asked Sequence with an infinite amount of limit points
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awarded  Popular Question
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awarded  Popular Question
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awarded  Notable Question
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awarded  Yearling
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awarded  Caucus
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comment Infinite sets don't exist!?
You could mention, that Von Neumann proposed that all natural numbers can be bootstrapped out of the empty set by the operation you described.
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awarded  Popular Question
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awarded  Popular Question
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awarded  Popular Question