math 521 (MATH521)

University Of North Carolina - Chapel Hill

Here are the best resources to pass math 521 (MATH521). Find math 521 (MATH521) study guides, notes, assignments, and much more.

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Compact Sets Compact Sets
  • Compact Sets

  • Class notes • 4 pages • 2023
  • Available in package deal
  • Introduce and provide proof for compact sets, that is a set that is both bounded and closed, hence the Heine-Borel theorem. Then introduce the perfect set, the connected/disconnected sets, and lastly the canter set, write proofs for all three.
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Topology of R
  • Topology of R

  • Class notes • 2 pages • 2023
  • Available in package deal
  • Continue introducing the different parts to the topology of R, from the epsilon neighborhood of a, to open subsets of R, isolated points and limit points of A, then closed sets. Proof these different fundamentals of topology.
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Sequences and Topology of R Sequences and Topology of R
  • Sequences and Topology of R

  • Class notes • 4 pages • 2023
  • Available in package deal
  • Finish the lecture on sequences and the convergence of Cauchy. Then introduce the topology of R and in it the epsilon neighborhood of a in R. Define open sets, limit points, isolated points, and closed subsets.
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Sequences Sequences
  • Sequences

  • Class notes • 3 pages • 2023
  • Available in package deal
  • Introduce sequences and its epsilon proof. Then explain sequences with the algebraic limit theorem and the order limit theorem. Write proof for the theorem that a sequence converges if and only if that sequence is a Cauchy sequence.
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Limit of Sequence Limit of Sequence
  • Limit of Sequence

  • Class notes • 2 pages • 2023
  • Available in package deal
  • Give an epsilon proof for the limit of a sequence, where in more detail the partial sum of a series and its convergence is explained and tested with the p-series test. Then, introduce the Cauchy sequence and the monotone convergence theorem.
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Algebraic Limit Theorem and Order Limit Theorem Algebraic Limit Theorem and Order Limit Theorem
  • Algebraic Limit Theorem and Order Limit Theorem

  • Class notes • 3 pages • 2023
  • Available in package deal
  • Explain and provide proof for the algebraic limit theorem and the order limit theorem. Use proof by contradiction for the assumption and conclusion of the two sequences.
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Sequences Sequences
  • Sequences

  • Class notes • 2 pages • 2023
  • Available in package deal
  • Introduce sequences and its epsilon proof. Define the convergence of an to a and how to prove it with a backwards proof by first identifying the candidate for the limit and prove that that is the candidate, then prove convergence. Then introduce some theorems about sequences, namely the algebraic limit theorem and the order limit theorem.
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Consequences from Axiom of Completeness Continued. Consequences from Axiom of Completeness Continued.
  • Consequences from Axiom of Completeness Continued.

  • Class notes • 3 pages • 2023
  • Available in package deal
  • Explain and prove more consequences from the axiom of completeness. First, the density of rational numbers in real numbers using Archimedean principle 1 and axiom of completeness. Then prove the existence of the square root of 2 with contradiction. Lastly, the sequences argument with the algebraic limit theorem and order limit theorem.
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Consequences of Axiom of Completeness Consequences of Axiom of Completeness
  • Consequences of Axiom of Completeness

  • Class notes • 1 pages • 2023
  • Available in package deal
  • Explain the proof for the nested interval property, and also the proofs for the Archimedean Property, which is split into two parts.
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