Math 190A - Foundations of Topology I (Fall 2022)

Homework

Homework is due via Gradescope by 11:59PM on Fridays.
Homework may be submitted up to 24 hours late, but receive a -25% penalty.
The lowest homework score is automatically dropped.

Exam materials

Notes for course

The general plan is to cover Chapters 2-4 of Munkres' book. I will try to follow the general order, but will change/add/remove some things.
The lectures will follow my own notes below fairly closely, but it is recommended to read Munkres' book for more examples and alternative explanations.

The notes are a constant work in progress. If you plan to print, I suggest only doing 4-5 pages at a time as I will generally revise before and after lecture.

Schedule

Sep 22What is a topological space? (1.2)
Subbases (1.3)
Munkres: 12, 13
 
Sep 27Bases (1.3)
Subspaces (1.4)
Closed sets (1.5)
Munkres: 13, 16, 17
Sep 29 Closure and interior (1.6)
Continuous functions (1.7)
Munkres: 17, 18
 
Oct 4Continuous functions (1.7)
Munkres: 18
Oct 6Homeomorphisms and embeddings (1.8)
Product spaces (2.1)
Munkres: 18, 15, 19
Oct 7HW 1 due
 
Oct 11Metric spaces (2.2)
Munkres: 20
Oct 13Hausdorff spaces (2.3)
Quotient spaces (2.4)
Munkres: 17, 22
Oct 14HW 2 due
 
Oct 18Quotient spaces (2.4)
Connected spaces (3.1)
Munkres: 23, 24
Oct 20Midterm 1
 
Oct 25Connected spaces (3.1)
Path-connected spaces (3.2)
Munkres: 23, 24
Oct 27Components and local versions of (path-)connected (3.3)
Munkres: 25
Oct 28HW 3 due
 
Nov 1Components and local versions of (path-)connected (3.3)
Compact spaces (4.1)
Munkres: 25, 26, 27
Nov 3Compact spaces (4.1)
Munkres: 26, 27
Nov 4HW 4 due
 
Nov 8Compact spaces (4.1)
Variants of compactness (4.2)
Local compactness and one-point compactifications (4.3)
Munkres: 26, 28, 29
Nov 10Midterm 2
 
Nov 15Local compactness and one-point compactifications (4.3)
Munkres: 29
Nov 17Local compactness and one-point compactifications (4.3)
Countability axioms (5.1)
Separation axioms (5.2)
Munkres: 29, 30, 31, 32
 
Nov 21HW 5 due
Nov 22Urysohn's lemma (5.3)
Urysohn metrization theorem (5.4)
Munkres: 33, 34
Nov 24Holiday - no class
 
Nov 29Topological manifolds (5.5)
Munkres: 36
Dec 1Wrap up and preview discussion of algebraic topology and other followup topics
Dec 2HW 6 due
 
Dec 9Final exam: 11:30AM-2:29PM in APM B412.