Sam Mundy

2nd year graduate student at Columbia University.
I am interested in arithmetic geometry and related areas.

Shimura Varieties Reading Group

This summer we met weekly to discuss Shimura varieties.


Our main reference is
[Milne] Milne's notes on Shimura Varieties.
There are also some errata and Poonen's extensive list of comments.
[Lan] Kai-Wen Lan's notes.
[Youcis] Alex Youcis has a blog post on motivation for the theory of Shimura varieties.

Times and dates:

We used to meet weekly in room 307 in the math building at 4:00 on Fridays. We will no longer meet unless someone requests a meeting. We still have the room reserved from 4:00 to 6:00 on Fridays until September 1st.


There will not necessarily be any talks. Rather, we will read on our own and discuss the reading in front of the blackboard.
We should bring questions, comments, and ideas about, and supplementary to, the reading material. If you feel like you might have trouble contributing during the sessions, try adapting the this advice about seminars to reading instead.
Being in 507 307, we have access to a good okay blackboard, and we should use it as much as is reasonable. We should write our questions on the blackboard before trying to answer them, for example.
If you have any ideas or comments about anything from references to logistics, feel free to email me.

The following table contains the dates we met, along with references to the reading that we discussed/will discuss. From July 14 and onwards, it contains a suggested reading schedule.

Date References
May 12 [Milne] Chapter 1
May 19 [Milne] Chapter 2
May 26 [Milne] Chapter 3
June 2 [Milne] Chapter 4
June 9 [Milne] Chapter 5, up to page 56
June 16 [Milne] Rest of chapter 5
June 23 [Lan] Chapters 1-3
June 30 [Lan] Chapter 4
July 7 [Lan] Chapter 5
July 14 [Milne] Chapters 6 and 7
July 21 [Milne] Chapter 8
July 28 [Milne] Chapter 9
August 4 [Milne] Chapters 10 and 11
August 11 [Milne] Chapters 12 and 13
August 18 [Milne] Chapter 14
August 25 [Milne] Chapter 15
September 1 [Milne] Chapters 16 and 17

Past Seminars

Algebraic Number Theory Meetings Spring 2016

Some papers

Here is my senior thesis (45 pages). The last section contains a new adelic proof of the Riemann-Roch Theorem for number fields.

Here is a link to my paper on this proof on the arXiv (8 pages).

Local Compactness and Number Theory: These are the notes for a seminar course (Math 639 Section 001) which I taught at UNM in the spring of 2015.

Some things I am thinking about

Using compact or discrete rings to extend their Pontrjagin duals, in the category of locally compact abelian groups.
Example: One can extend the circle by the integers to obtain the reals (I have a weird way of doing this.)

Adelic surface area (see my undergraduate thesis.)

Here is a diagrammatic "statement" of the weight 2 Eichler-Shimura Theorem. I have this printed on a coffee mug.

Tiny version:

Sam's email address is: