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

*Office Hours Fall 2022: Monday 11:30 - 12:30 (Graduate Center), Monday
2:15 - 3:30 (Baruch), Tuesday 12:00 - 1:00 (Zoom)
*

*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 **

2.

3. Vanishing cycles and wild monodromy

4. Fields of moduli of three-point G-covers with cyclic p-Sylow, I, Algebra Number Theory, 6, (2012) no. 5, 833--883

5. The (local) lifting problem for curves, Proceedings for Conferences in Kyoto "Galois-Teichmüller theory and Arithmetic Geometry"(2012), 359--412

6. Fields of moduli of three-point G-covers with cyclic p-Sylow, II, J. Théor. Nombres Bordeaux 25, (2013) no. 3, 579--633

7. Toward Abhyankar's inertia conjecture for PSL_2(\ell), Proceedings of the Luminy Meeting "Groupes de Galois géométriques et différentiels" (2013), 195--206

8. On Colmez's product formula for periods of CM-abelian varieties, Math. Ann. 356, (2013) no. 2, 401--418

9. Conductors of wild extensions of local fields, especially in mixed characteristic (0, 2), Proc. Amer. Math. Soc. 142 (2014) no. 5, 1485--1495

10. (with Stefan Wewers) Cyclic extensions and the local lifting problem, Ann. of Math. 180, (2014) no. 1, 233--284

11. (with Stefan Wewers) Wild Ramification Kinks, Res. Math. Sci., 3:21 (2016), 27 pp.

12. The local lifting problem for A_4, Algebra Number Theory, 10, (2016) no. 8, 1683--1693

13. Good reduction of three-point Galois covers, Algebraic Geometry, 4, (2017) no. 2, 247--262

14. (with Colin Ingalls, Ekin Ozman, and Bianca Viray) Unramified Brauer Classes on cyclic covers of the projective plane (with an appendix by Hugh Thomas), Proceedings of the AIM Workshop, "Brauer groups and obstruction problems: Moduli and arithmetic" (2017), 115--153

15. A generalization of the Oort conjecture, Comm. Math. Helv., 92, (2017) no. 3, 551--620

16. (with David Harbater, Rachel Pries, and Kate Stevenson) Abhyankar's conjectures in Galois theory: Current status and future questions, Bull. Amer. Math. Soc., 55, (2018) no. 2, 239--287.

17. (with Hilaf Hasson) The abc conjecture implies the weak diversity conjecture, Albanian J. Math., 12, (2018) no. 1, 8--14

18. (with John Doyle, Holly Krieger, Rachel Pries, Simon Rubinstein-Salzedo, and Lloyd West) Reduction of dynatomic curves, Ergodic Theory Dynam. Systems, 38, (2019) no. 10, 2717--2768

19. Lifting of curves with automorphisms, Open Problems in Arithmetic Algebraic Geometry, Adv. Lect. Math. (ALM) 46, F. Oort, ed. (2019), 9--59

20. (with Stefan Wewers) Explicit resolution of weak wild quotient singularities of arithmetic surfaces, J. Algebraic Geom., 29, (2020) no. 4, 691--728

21. (with Tony Shaska) Superelliptic curves with many automorphisms and CM Jacobians,

22. (with Huy Dang, Soumyadip Das, Kostas Karagiannis, and Vaidehee Thatte) Local Oort groups and the isolated differential data criterion (16 pp.),

23. (with Padmavathi Srinivasan) Explicit minimal embedded resolutions of divisors on models of the projective line,

24. (with Padmavathi Srinivasan) Conductor-discriminant inequality for hyperelliptic curves in odd residue characteristic (60 pp.), preprint

25. (with Daniele Turchetti) Stabilization indices of potentially Mumford curves (33 pp.), preprint

**Other
Writings:
**

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

**
Current Teaching (Fall 2022)
**

**MTH
4100 (Linear Algebra and Matrix Methods, Baruch)
MATH
87700 (Introduction to Algebraic Geometry, Graduate Center)
**

**MTH
4010 (Mathematical Analysis I), Baruch, Spring 2022
MTH 3035
(Vector Calculus), Baruch, Spring 2022
MTH 3006
(Elements of Calculus II), Baruch, Fall 2020
MTH 4000
(Bridge to Higher Mathematics), Baruch, Spring 2020
**

MTH 4000 (Bridge to Higher Mathematics), Baruch, Spring 2019

MTH 4500 (Introductory Financial Mathematics), Baruch, Fall 2018

MTH 2205 (Applied Calculus), Baruch, Fall 2018

Math 3315 (Advanced Calculus and Linear Algebra II), Virginia, Spring 2018

Math 3351 (Linear Algebra), Virginia, Spring 2018

Math 2315 (Advanced Calculus and Linear Algebra I), Virginia, Fall 2017

Math 1320 (Calculus II), Virginia, Summer 2016

Math 3351 (Linear Algebra), Virginia, Spring 2015

Math 5658 (Galois Theory), Virginia, Fall 2014

Math 8620 (Algebraic Geometry), Virginia, Fall 2014

Math 7754 (Commutative Algebra), Virginia, Spring 2014

Math 3351 (Linear Algebra), Virginia, Fall 2013

Math V2000 (Intro to Higher Math), Columbia, Spring 2011

Math V2010 (Linear Algebra), Columbia, Spring 2011

Math V1102 (Calculus II), Columbia, Fall 2009

Math 104 (Calculus I), UPenn, Summer 2007

Math 412 (Advanced Linear Algebra), UPenn, Summer 2005

Liberia

I sit on the board of the I-HELP Liberia Project and am 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 workshop for Liberian math teachers on Zoom.