Proving Bolzano-Weierstrass with Nested Interval Property | Real Analysis

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Wrath of Math

Wrath of Math

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We prove the Bolzano Weierstrass theorem using the Nested Interval Property. The Bolzano-Weierstrass theorem states every bounded sequence has a convergent subsequence. We will construct a subsequence by bounding our sequence between M and -M, then creating an infinite sequence of nested intervals from which the terms of our subsequence will come. We prove this subsequence converges to prove the BW theorem. #realanalysis
Proof of Nested Interval Property: • Nested Interval Proper...
Proof of Bolzano Weierstrass Theorem for Sequences (with Monotone Convergence Theorem): • Short Proof of Bolzano...
Proof that x^n Converges when |x| is less than 1: (coming soon)
Credit to Understanding Analysis by Stephen Abbott, where I first read this proof, and whose model I followed for the presentation.
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