Math 117: Real Analysis

Professor: Katy Craig, katy•craig at ucsb • edu , SH 6507

Teaching Assistant: Jose Zavala-Fonseca, jtz at ucsb • edu

Syllabus:

Weekly Routine:

Monday Tuesday Wednesday Thursday Friday
• watch assigned videos and take notes for quiz
• submit problem set by 11:59pm.
• attend class
• watch assigned videos and take notes for quiz
• attend class
• finish problem set

Outline of Course:

Part I: Sequences Part II: Functions
the real numbers, inf, and sup continuous functions
limit, liminf, limsup cts functions attain max and min on closed interval
bounded, monotone, and Cauchy sequences intermediate value theorem
subsequences and the Bolzano-Weierstrass theorem uniform continuity and limits of functions

Daily Course Materials: (updated throughout quarter)

week day video reading/study materials due today
1 3/29 (T) [in class lecture on N,Z,Q,R & induction] LEC1
Sec1-2, appendix
1 3/31 (Th) VID1c: absolute value
VID1d: sqrt(2) is not rational
VID2a: fields
VID2b: ordered fields
VID2c: supremum, infimum, defn of R
LEC2
Sec3
2 4/5 (T) VID3a: supremum and infimum, again
VID3b: Archimedean property
VID3c: Q is dense in R
LEC3
Sec4-5
HW1, HW1Sol
2 4/7 (Th) VID4a:sequences
VID4b:convergent/divergence sequences
VID4c:bounded sequences
Warning: there is a small type-o at the end of VID4c. The floor function should be defined as ⌊N⌋= max{n : n ∈ \mathbb{N} s.t. n ≤ N}. (I accidentally wrote "min" instead of "max".)
LEC4
Sec7-8
3 4/12 (T) VID5a: limit of sum
VID5b: limit of product
VID5c: examples, divergence to infinity
LEC5
Sec9
HW2
HW2Sol
3 4/14 (Th) VID6a: bounded monotone sequences converge
VID6b: general monotone sequences
LEC6
Sec10
4 4/19 (T) Midterm 1a covering lectures 1-5 PracMid1
PracMid1SOL
Mid1a
4 4/21 (Th) Midterm 1b covering lectures 1-5 Mid1b
Mid1SOL
5 4/26 (T) VID7a: limsup and liminf
VID7b: when limsup = liminf
LEC7
Sec10
5 4/28 (Th) VID8a: Cauchy sequences
VID8b: Cauchy iff convergent
Warning: In Lecture 8a, there is a small type-o in the proof that Cauchy sequences are bounded, in which \epsilon = 3 becomes \epsilon = 2.
LEC8
Sec10
6 5/3 (T) VID9a: subsequences
VID9b: subsequential limits
Warning: There is a small type-o in the proof n_k \geq k, where I write > instead of \geq. Please see the pdf where this type-o is corrected.
LEC9
Sec11
HW3
HW3SOL
HW3Q5SOL (thanks Sam Garcia!)
6 5/5 (Th) VID10a: bounded seq. have convergent subseq.
VID10b: subsequences, liminf, and limsup
LEC10
Sec12
7 5/10 (T) VID11a: sequences and series
VID11b: continuous functions
VID11c: example of epsilon/delta defn
Warning: there is a type-o in the proof of the comparison theorem, where t_n should be defined as the sum up to n, not the sum up to infinity.
LEC11
Sec14 and Sec 17
HW4
HW4SOL
7 5/12 (Th) VID12a: more continuous functions
VID12b: combining continuous functions
LEC12
Sec17
8 5/17 (T) Midterm 2a covering lectures 1-11 PracMid2
PracMid2SOL
Midterm 2a
8 5/19 (Th) Midterm 2b covering lectures 1-11 Midterm 2b
Mid2SOL
9 5/24 (T) VID13a: attaining maximum/minimum
VID13b: intermediate value theorem
LEC13
Sec18
9 5/26 (Th) VID14a: uniform continuity, part one
VID14b: uniform continuity, part two
VID14c: uniform continuity, part three
VID14d: cts on [a,b] implies unif cts
VID14e: unif cts sends cnvgt to cnvgt
LEC14
Sec19
OfficeHours_052722
10 5/31 (T) VID15a: limits of functions, part one
VID15b: limits of functions, part two
LEC15
Sec20
HW5 HW5SOL
10 6/2 (Th) VID16a: limits of functions
VID18b: review of triangle inequality
VID18c: review of Archimedean property, part one
VID18d: review of Archimedean property, part two
VID18e: review of subsequences
VID18f: review of continuous functions
LEC18 OfficeHours_060222
- 6/9 (Th) Final Exam covering lectures 1-18 , ZoomLink

PracticeFinal PracticeFinalSOL
FinalExam

Extra Credit Math Movie Competition:
As an opportunity for extra credit, we will hold a math movie competition. The goal is to make the best math movie, lasting three minutes or less. Submissions are due at 11:59pm on Sunday, May 22nd. The winner of the competition will receive ten points of extra credit on their final exam. Second place will receive five points of extra credit, and third place will receive three points of extra credit. (You are allowed to work in groups, but then the extra credit points will be distributed equally among all members of the group.)

Submissions should be uploaded to YouTube, Vimeo, or a similar site. Links to the movies can be emailed to me. (Please do not send the movies as email attachments.)

Potential topic ideas for inspiration...

Do's and Don'ts:

• Do let me know if you choose one of the above topics, so I can remove it from the list, to prevent duplicates.
• Do use your video as a chance to feature yourself, your roommates, your drawings... anything you create!
• Do show a list of references at the end of the video, including any articles, books, or websites you consulted while making the video.
• Do not simply use clunky online tools to quickly make a cartoon. I get tons of these every year, and I have yet to see one that displays creativity.
• Do not plagiarize. Some students have simply made a video of themselves reading something they found on the internet, without attribution. This is bad.

Here are some of my favorite videos from previous years: