__Carl Lian__

I am a third-year graduate student in mathematics at Columbia University, advised by Aise Johan de Jong and currently supported by an NSF Graduate Research Fellowship. I graduated from MIT in June 2015 with an S.B. in Mathematics and minor in Music.

I'm interested broadly in algebraic and arithmetic geometry. Recently I've been thinking about intersection theory on moduli spaces of curves and branched covers.

Outside of math, I've been involved with the Columbia New Opera Workshop since Spring 2017.

**Research:**

The Class of the d-elliptic Locus in Genus 2, preliminary draft.
(with Joshua Alman and Brandon Tran) Circular Planar Electrical Networks: Posets and Positivity. J. Combinatorial Theory, Ser. A 132, 58-101 (2015).
Representations of Cherednik Algebras Associated to Symmetric and Dihedral Groups in Positive Characteristic, arXiv 1207.0182.
**Teaching:**

Fall 2017: TA for Calculus 1 (Instructor: Dusa McDuff)
Fall 2016: TA for Calculus 1 (Instructor: Dusa McDuff)
**Seminar organizing:**

Fall 2017 (with Raymond Cheng): Moduli of Sheaves
Summer 2017 (with Raymond Cheng): Classic Papers in Algebraic Geometry
Spring 2017 (with Shizhang Li): BBD
Fall 2016 (with Shizhang Li): Hodge Theory in Positive Characteristic
**Mostly old activities:**

Columbia Mathematics REU
Math ROOTS, PRIMES, PRIMES Circle
Harvard-MIT Mathematics Tournament
Combinatorics REU, U. Minnesota-Twin Cities
Lexington Mathematics Tournament and Lexington High School's math club.
Canada/USA Mathcamp