Biography
I am a recent graduate of the doctoral program in mathematics at Columbia University. My advisor was Johan de Jong and my thesis is titled Del Pezzo surfaces with irregularity and intersection numbers on quotients in geometric invariant theory. I previously studied mathematics at the University of Michigan for my undergraduate degree. There I worked under the guidance of Jeffrey C. Lagarias on understanding the nature of the level sets of Takagi's fractal curve.
My current main research interests include GIT quotients, equivariant intersection theory, and del Pezzo fibrations in finite characteristic.
Contact
My email address is: [mylastname] [myfirstinitial] [at] math.columbia.edu.
Preprints
 Z. Maddock. Regular del Pezzo surfaces with irregularity.
ArXiv:1304.5555 [math.AG] , 2013. (auxiliary file)  Z. Maddock. A ratio of integration between GIT quotients.
ArXiv:1210.4253 [math.AG], 2012.
Publications
 J.C. Lagarias, Z. Maddock.
Level sets of the Takagi function: generic level sets.
Indiana Univ. Math. J., Vol. 60, No. 6 (2011), pp 18571884.  J.C. Lagarias, Z. Maddock.
Level sets of the Takagi function: local level sets.
Monatsh. Math. Vol. 166, No. 2 (2012), pp 201238.
 Z. Maddock.
Level sets of the Takagi function:
Hausdorff dimension.
Monatsh. Math., Vol. 160, No. 2 (2010), pp 167186.
Posters

"Regular del Pezzo surfaces with irregularity."
Algebraic Geometry Northeastern Series  Poster session.
Brown University, Providence, RI. Oct 2012.

"Integration on GIT quotients by nonabelian groups."
Algebraic Geometry Northeastern Series  Poster session.
University of Massachusetts, Amherst, MA. Mar 2012.