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math104-s22:s:jdamaj

Jad Damaj

About Me: I'm a first year math major from Nevada. I enjoy playing guitar and running.

Course Notes

Course Journal

Jan 18

  • Overview of Course
  • Discussed natural numbers, integers, and rationals
  • Problem with rationals: has holes which prevent us from getting sharp bounds on subsets

Jan 20

  • Rational Zeros Theorem
  • Construction of $\R$ from $\Q$: Dedekind Cuts vs. Cauchy Sequences
  • Completeness Axiom + Archimedean Property for $\R$
  • Definition of limits/convergence for sequences

Jan 25

  • Showed Convergence Sequences are bounded.
  • Defined operations on convergent sequences.
  • Showed some useful limits.

Jan 27

  • Monotone Sequences
  • Recursive Definition of Sequences
  • lim inf and lim sup of a Sequence

Feb 1

  • Cauchy sequences
  • Cauchy sequences always converge in $\R$
  • Subseqeunces
  • Cantor's Diagonal trick to produce a convergent subsequence

Feb 3

  • All sequences have a monotone subsequence
  • All bounded sequences have a convergent (monotone) subsequence
  • If $S$ is the set of subsequential limits of $s_n$, then sup$S$ = limsup$s_n$ and inf$S$ = liminf$s_n$

Feb 8

  • limsup(a_nb_n) = lim(a_n)limsup(b_n) for convergent series $a_n$ with limit greater than 0
  • Introduced Series
  • “Sanity Check” and Comparison Test
  • Root and Ratio Tests

Feb 10

  • Series
  • Summation by Parts
  • Power Series

5 Questions

  • What is a good way to approach coming up with inequalities to use in proof, as in the Rudin exercises this week.
  • What are some good counterintuitive counterexamples to keep in mind when working on problems.
  • What specific properties of absolute convergence should we be familiar with for the exam, eg. rearrangements etc.
  • What properties does multiplication in limsup(a_nb_n) have in general.
  • Is there a good way to get intuition for accumulation of infinite series, eg. the case of sum(1\n)

February 22

  • Definition of Metric Space + examples
  • Topology
  • Open Sets

February 24

  • More Metric Space examples
  • Sequences + Cauchy Criterion
  • Closure/ Closed Sets

March 1

  • Continuous Maps (open cover def and sequential def)
  • Inherited Topology

March 3

  • Open cover compactness
  • Sequential compactness

March 8

  • Sequential Compactness $\to$ Open Cover Compactness

March 10

  • Connectedness

March 15

  • Continuous maps preserve compactness and connectedness
  • Uniform Continuity
  • Discontinuity

March 17

  • Sequences and Series of Functions
  • Uniform Convergence

March 29

  • Differentiation
  • Rolle's Theorem

March 31

  • Generalized Mean Value Theorem
  • L'Hopital's rule

April 7

  • Higher Derivatives
  • Taylor's Theorem

April 12

  • Taylor Series
  • Power Series
  • Reimann Integral

April 14

  • Integration
  • Reimann - Stieltjes Integral

April 19

  • Reimann - Stieltjes Integral

April 21

  • Properties of Integrals

April 26

  • Uniform Convergence with Integration
  • Uniform Convergence with Differentiation

Homework

math104-s22/s/jdamaj.txt · Last modified: 2022/05/12 19:55 by jdamaj