Baruch College

Department of Mathematics

1 Bernard Baruch Way

New York, NY 10010

*Email:* Andrew.Obus@baruch.cuny.edu

*Office Phone:* 646-312-4008*Office:* Baruch Vertical Campus 6-223, CUNY Graduate Center 4303*About Me:* I am an associate professor in the Department of Mathematics at Baruch College, as well as doctoral faculty at the CUNY Graduate Center. As you can see, I am also an artistic visionary in the field of web design. My work is partially supported by NSF CAREER Grant DMS-2047638.

Here is my CV.

**Research Publications**

- Ramification of primes in fields of moduli of three-point covers, Ph. D. Thesis (2009), supervised by David Harbater at the University of Pennsylvania (vii+135 pp.)
**(**with Rachel Pries) Wild tame-by-cyclic extensions(5) 214 (2010), 565–573**, J. Pure Appl. Algebra**,- Vanishing cycles and wild monodromy
(2012), 299–338**, Int. Math. Res. Notices** - Fields of moduli of three-point G-covers with cyclic p-Sylow, I
, 6, (2012) no. 5, 833–883**, Algebra Number Theory** - The (local) lifting problem for curves,
**Proceedings for Conferences in Kyoto**(2012), 359–412*“Galois-Teichmüller theory and Arithmetic Geometry”* - Fields of moduli of three-point G-covers with cyclic p-Sylow, II,
25, (2013) no. 3, 579–633**J. Théor. Nombres Bordeaux** - Toward Abhyankar’s inertia conjecture for PSL_2(\ell),
(2013), 195–206**Proceedings of the Luminy Meeting “Groupes de Galois géométriques et différentiels”** - On Colmez’s product formula for periods of CM-abelian varieties,
356, (2013) no. 2, 401–418**Math. Ann.** - Conductors of wild extensions of local fields, especially in mixed characteristic (0, 2)
142 (2014) no. 5, 1485–1495**, Proc. Amer. Math. Soc.** - (with Stefan Wewers) Cyclic extensions and the local lifting problem,
180, (2014) no. 1, 233–284**Ann. of Math.** - (with Stefan Wewers) Wild Ramification Kinks,
3:21 (2016), 27 pp.**Res. Math. Sci.,** - The local lifting problem for A_4,
10, (2016) no. 8, 1683–1693**Algebra Number Theory,** - Good reduction of three-point Galois covers,
4, (2017) no. 2, 247–262**Algebraic Geometry,** - (with Colin Ingalls, Ekin Ozman, and Bianca Viray) Unramified Brauer Classes on cyclic covers of the projective plane (with an appendix by Hugh Thomas),
(2017), 115–153**Proceedings of the AIM Workshop, “Brauer groups and obstruction problems: Moduli and arithmetic”** - A generalization of the Oort conjecture,
92, (2017) no. 3, 551–620**Comm. Math. Helv.,** - (with David Harbater, Rachel Pries, and Kate Stevenson) Abhyankar’s conjectures in Galois theory: Current status and future questions,
55, (2018) no. 2, 239–287.**Bull. Amer. Math. Soc.,** - (with Hilaf Hasson) The abc conjecture implies the weak diversity conjecture,
.,**Albanian J. Math** - (with John Doyle, Holly Krieger, Rachel Pries, Simon Rubinstein-Salzedo, and Lloyd West) Reduction of dynatomic curves,
38, (2019) no. 10, 2717–2768**Ergodic Theory Dynam. Systems,** - Lifting of curves with automorphisms,
*Open Problems in Arithmetic Algebraic Geometry* - (with Stefan Wewers) Explicit resolution of weak wild quotient singularities of arithmetic surfaces,
, 29, (2020) no. 4, 691–728**J. Algebraic Geom.** - (with Tony Shaska) Superelliptic curves with many automorphisms and CM Jacobians,
90 (2021), 2951–2975**Math. Comp.**, - (with Huy Dang, Soumyadip Das, Kostas Karagiannis, and Vaidehee Thatte) Local Oort groups and the isolated differential data criterion (16 pp.),
, 34, (2022) no. 1, 251–269**J. Théor. Nombres Bordeaux** - (with Padmavathi Srinivasan) Explicit minimal embedded resolutions of divisors on models of the projective line,
8, (2022), no. 2, Paper No. 27, 27 pp.**Res. Number Theory**, - (with Padmavathi Srinivasan) Conductor-discriminant inequality for hyperelliptic curves in odd residue characteristic,
, to appear, 13 pp.**Int. Math. Res. Notices** - (with Daniele Turchetti) Stabilization indices of potentially Mumford curves, preprint, 33 pp.

**Other Writings:**

- Preparing for the Tenure-Track Job Market,
67, (2020) no. 6, 807–809**Notices Amer. Math. Soc.**,

**Current Teaching (Spring 2024)**

**MTH 4010 (Mathematical Analysis I)MTH 3035 (Vector Calculus)**

## Liberia

I sit on the board of the I-HELP Liberia Project and have been involved in writing the Liberian Math Olympics contests. I traveled to Liberia in the Summers of 2011, 2013, and 2017 with groups representing the organization to help run two-week STEM teacher training workshops. Since August 2021, I have run a weekly training program for Liberian math teachers on Zoom.

The webpage for the Fall 2023 Liberian Mathematics Teacher Training Program is here.