## Mathematics etc.

I am an Acting Assistant Professor at the University of Washington. I was a Postdoctoral Fellow at MSRI for the program in Noncommutative Algebraic Geometry and Representation Theory. Previously, I was at the University of New South Wales where I completed my Ph. D. with Daniel Chan. I am a webmaster for the Australian Mathematical Society Careers webpage. I am a lurker on Mathoverflow.

I work on problems in algebra with geometric flavour. Some keywords relevant to my research: maximal orders, Azumaya algebras, minimal model program, Brauer group/Brauer pair, Hopf algebras, Artin-Schelter regular algebra, McKay correspondence.

Email: kenhchan@math.washington.edu

Office: Padelford Hall C-424.

### Research

#### Publications

#### Preprints

#### In preparation

### Conferences

#### Upcoming

#### Past

### Introduction to Differential Equations (Math 307D)

Spring 2015

**Office hour:** TBA

#### Course Information

**Text:** William E. Boyce, Richard C. DiPrima, *Elementary Differential Equations and Boundary Value Problems, 9th Edition*

**Classes (B):** Monday, Wednesday and Friday at 10:30-11:20am Communications Building 230.

**Syllabus:** http://www.math.washington.edu/Undergrad/courses/307/307syl.php

#### Assessment

**Homework (20%):**
Homework will be submitted online on Catalyst, due one week after it is posted.
There will be weekly homework starting week 2, except for midterm week (TBA) and the last week of quarter.
The lowest score will not count towards your final grade. Only 2 or 3 questions will be
marked each week, but you get credit for attempting all assigned questions. You are encouraged to work in groups for the homework assignments, but each person must write up their own solutions.
Assigned questions will be posted on this webpage.

Summary of lectures.

A copy of the problems from the 9th edition of the textbook can be found here.**Midterm (30%):** Midterm will be on the 1st May 2015. The midterm will cover everything in the summary file up to Chapter 3.4 (to be decided)
except for chapter 2.3 and reduction of order.

Practice questions are here. Solutions are here.

Example from review session.

- More information will be posted later.

**Final (50%):** The final exam will cover the sections
not covered by the midterm. The final examination timetable can be found at http://www.washington.edu/students/reg/S2015exam.html.

- More information will be posted later.

#### Examination policies

You are permitted one 8.5x11'' sheet of notes in both the midterm and final. Calculators and any other electronic devices will not be permitted in the midterm or the final.