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About me

I am an Assistant Professor of Mathematics and Computer Science at Hampden-Sydney College. I work in combinatorics, both on purely combinatorial problems as well as on problems with connections to other areas such as algebra, geometry, topology, computer science, and physics.

Previously I was an RTG postdoc at the University of Oregon working with Patricia Hersh. Before that, I was a Visiting Assistant Professor at Hampden-Sydney College in Virginia and before that a York Science Fellow at York University in Toronto where I worked with Nantel Bergeron. I received my PhD in Mathematics from Michigan State University where I was advised by Michael Shapiro. I did my undergraduate studies at the University of Minnesota-Twin Cities and completed an Honors Thesis with Victor Reiner.

Email: jmachacek@hsc.edu

Other Places to find me on the Internet:

• Google Scholar 

• MathOverflow 

• Mathematics Genealogy Project

Mathematical Genealogy

My advisor is Mikhail Z. Shapiro, my mathematical grandfather is Vladimir I. Arnold, my mathematical great-grandfather is Andrei N. Kolmogorov, and further ancestors can be found via the Mathematics Genealogy Project link above.

Erdös number

My Erdös number is 3. I have collaborated with Nantel Bergeron on MR3960512 who has collaborated with Persi W. Diaconis on MR2880223  who has directly collaborated with Paul Erdös on MR2126886.