### Books

*Introduction to Model Spaces and Their Operators* with Javad Mashreghi, William Ross.

Cambridge Studies in Advanced Mathematics, Cambridge University Press, 2015.

*A Second Course in Linear Algebra* with Roger Horn. Cambridge University Press (in production).

*The Pi Mu Epsilon 100th Anniversary Problems* with Steven J. Miller (in preparation).

### Recent Papers

"Liberal arts colleges: an overlooked opportunity?" with David Damiano, Michele Intermont, *Notices Amer. Math. Soc.* 63 (2016), no. 5, 565-570.

"Visual properties of generalized Kloosterman sums" with Paula Burkhardt '16, Alice Chan '14, Gabriel Currier '16, Florian Luca, Hong Suh '16, *J. Number Theory* 160 (2016), 237-253.

"Lattices from Hermitian function fields" with Albrecht Böttcher, Lenny Fukshansky, Hiren Maharaj, *J. Algebra *447 (2016), 560-579.

"An extremal problem for characteristic functions" with Isabelle Chalendar, William T. Ross, Dan Timotin, *Trans. Amer. Math. Soc.* 368 (2016), no. 6, 4115-4135.

"Partial orders on partial isometries" with Robert T.W. Martin, William T. Ross, J. Operator Theory 75 (2016), no. 2, 101-134.

"Wetzel's problem, Paul Erdos, and the continuum hypothesis: a mathematical mystery" with Amy L. Shoemaker '14, *Notices Amer. Math. Soc.* 62 (2015), no. 3, 243-247.

"G.H. Hardy: mathematical biologist" with Hannah Christenson '17)* J. Humantist. Math.* 5 (2015), no. 2, 96-102. This paper also to be included in *The Best Writing in Mathematics 2016* (Princeton University Press).

"Gauss' hidden menagerie: from cyclotomy to supercharacters" with Trevor Hyde, Bob Lutz '13,

*Notices Amer. Math. Soc. *62 (2015), no. 8, 878-888.

"Toeplitz determinants with perturbations in the corners" with Albrecht Böttcher, Lenny Fukshansky, Hiren Maharaj, *J. Funct. Anal*. 268 (2015), 171-193.

"An exhibition of exponential sums: visualizing supercharacters" with Paula Burkhardt '16, Gabriel Currier '16, Mathieu de Langis '15, Bob Lutz '13, Hong Suh '16, *Proceedings of Bridges 2015: Mathematics, Music, Art, Architecture, Culture* (2015), 475-478.

"On lattices generated by finite abelian groups" with Albrecht Böttcher, Lenny Fukshansky, Hiren Maharaj, *SIAM J. Discrete Math 29* (2015), no. 1, 382-404.

"Permutation invariant lattices" with Lenny Fukshansky, Xun Sun (CGU '15), *Discrete Mathematics 338* (2015), 1536-1541.

"The graphic nature of Gaussian periods" with William Duke, Bob Lutz '13, *Proc. Amer. Math. Soc.* 143 (2015), no. 5, 1849-1863.

"Model spaces: a survey" with William T. Ross, *Contemp. Math. 638* (2015), 197-245.

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