# About Me

I have been a PhD student at Harvard since September 2018. Previously, I did my undergraduate and Part III at Cambridge (2014–2018).

# Contact Me

You can email me at dexter@math.harvard.edu. My office is at 428a.

# Expository Writings

Some miscellaneous expository writings. The word "expository" refers to the lack of originality, as opposed to any claim of comprehensibility or correctedness.

Clicking the title below will lead to a web version of the note, which is an experimental feature — let me know if anything seems broken. Click "pdf" for a downloadable pdf version.

- Goodwillie filtration and factorization homology (pdf)
- Bott Periodicity (pdf)
- The Heat Kernel (pdf) ← this is my minor thesis
- Geometric Topology (pdf) ← this is my Part III essay
- Construction of v
_{1}and v_{2}self-maps (pdf) - Ring Structures on S/p (pdf)
- Global Analysis – Hodge Decomposition Theorem (pdf)
- Clifford Algebra and Bott Periodicity (pdf)
- The Étale Fundamental Group (pdf)
- The Lemniscate Sine (pdf)
- Period 3 orbits (pdf)

# Cambridge Course Notes

When I was in Cambridge, I typed up my lecture notes for the courses I attended. They can be found here.

# Computer Drawings

As a means of ~~procrastination~~ learning how to use HTML5 canvas, I produced the following drawings/simulations:

# Miscellaneous

# Other Involvements

I co-organized the Bott periodicity seminar during Spring 2019.

I have been on the committee of the Cambridge student societies The Archimedeans, CUPS, the SRCF and the RCSA. I am also a sysadmin of the SRCF.

# Privacy Statement

I have a Privacy Statement as required by law (maybe).