Colby Long

Colby Long

Assistant Professor - Mathematics

Office: Taylor 310
Phone: 330-263-2027

I joined the Wooster faculty as an Assistant Professor of Mathematics in Fall 2019. Prior to coming to Wooster, I was a Postdoctoral Research Fellow at the Mathematical Biosciences Institute at The Ohio State University. In my research, I primarily use tools from algebraic geometry, algebraic statistics, and discrete mathematics to address questions in phylogenetics.


  • B.A., Mathematics, St. Mary’s College of Maryland, 2008
  • M.S., Mathematics, North Carolina State University, 2013
  • Ph.D., Mathematics, North Carolina State University, 2016

Recent Publications

  • Initial Ideals of Pfaffian Ideals. J. Comm. Algebra, 12 (2020), no. 1, 91–105 
  • Phylogenetic Networks (with Elizabeth Gross and Joseph Rusinko) chapter in A Project-Based Guide to Undergraduate Research in Mathematics, Birkauser Basel, 2020, edited by Pamela Harris, Erik Insko, and Aaron Wooton.
  • Species Tree Inference From Genomic Sequences Using the Log-det Distance (with Elizabeth S. Allman and John A. Rhodes). SIAM J. Appl. Algebra Geometry. 1 (2019), no. 1, 107--127 
  • Dimensions of Group-based Phylogenetic Mixture Varieties (with Hector Baños, Nathaniel Bushek, Ruth Davidson, Elizabeth Gross, Pamela Harris, Robert Krone, AJ Stewart, Robert Walker). Bull. Math. Biol. 81 (2019), no. 2, 316--336 
  • Identifiability and Reconstructibility of Species Phylogenies under a Modified Coalescent (with Laura Kubatko). Bull. Math. Biol. 81 (2019), no. 2, 408–430 
  • The Effect of Gene Flow on Coalescent-based Species Tree Inference (with Laura Kubatko). Syst. Biol. 67 (2018), no. 5, 770–785 
  • Distinguishing Phylogenetic Networks (with Elizabeth Gross). SIAM J. Appl. Algebra Geometry. 2 (2018), no. 1, 72–93

Courses Taught

  • MATH 215: Foundations of Advanced Mathematics
  • MATH 212: Multivariate Calculus
  • MATH 227: Operations Research
  • DATA 325: Applied Data Science