Math 590, Introduction to Topology, Spring 2021

Instructor: Jun Li MWF 12:00pm -1:00pm, Zoom link

Office Hour: MWF 11:00am -12:00pm, or by appointment, Zoom link

Syllabus: W21_590_syllabus. More information on Canvas webpage.

Main references: [Munkres] Topology, a first course.
[Ghrist] Elementary applied topology

A categorical review of topology.
Date Topic Reading assignment and HW More reading materials
Jan 19-22 Overview, survery on students' academic background and goal.
Metric spaces, open ball approach to topology and continuity.
Homework 1,
Jan 25-29, axiomatic treatment of the concept of a topological space.
Taylor expansion of a curve, Fundamental Theorem of the local theory of curves
Lecture notes for week 2
Feb 2-9, Continuity, homeomorphisms, quotient spaces, and product spaces. Lecture notes for week 3
Homework 2,
Feb 9-15, Bases and subbases. A revisit of continuity and open sets.
Lecture notes for week 4
Feb 16-22 Compactness; Separation axioms (Hausdorff property).
Connectedness, path-connectedness, and their relation.
Lecture notes for week 5
Homework 3,
Feb 23-28 Topological surfaces, definition and basic properties Lecture notes for week 6
Homework 4,
Mar 2-10 Fundamental polygon, cut and paste surgery, classification theorem. Lecture notes for week 7. Hitchin's notes introduction to surfaces.
Mar 11-15 Homotopy of countinous maps. Lecture notes for week 8
Mar 16-22 Fundamental group, first definition, and homotopy invariance.
Mar 23-29 More fundamental group, computations: the circle, figure 8, and surfaces.
Homework 5,
Apr 1-5 A quick introduction to homology theory

Apr 6-14 Selected topics: Morse theory, reeb graph, and persistent homology.
Apr 15-21 Final presentation week.