Quinnipiac University
Louis Deaett is passionate about both doing and teaching mathematics, and strongly believes that each of those pursuits reinforces the other.

In college, he discovered his love of the subject and what makes math special – its universal truths can be understood and owned by any of us. As his students sometimes tell him, they love how math “just makes sense.” Professor Deaett believes that every student – and indeed every feeling human being – deserves to have this experience of mathematics.

That motivates him, in the classroom and beyond, to find and share what is beautiful and exhilarating in math. This involves presenting new discoveries at conferences and in research papers, but it also touches on every moment he plans in his classes to let his students discover for themselves what is special about mathematics.

His own journey of discovery led from college at the University of Rochester to a Ph.D. in mathematics from the University of Wisconsin-Madison in 2009. He was a postdoctoral fellow at the University of Victoria before joining Quinnipiac in 2011.

In 2013, Professor Deaett gave a talk for the Quinnipiac University Honors Program entitled “The Truth about Mathematics” that can be viewed at https://youtu.be/R2A35DcjW2s.


  • BS, University of Rochester
  • BA, University of Rochester
  • PHD, University of Wisconsin-Madison


  • Mathematics and Statistics

Office Location

  • College of Arts & Sciences 3 106

Mail Drop

  • CL-AC3

Selected Publications

Peer Reviewed Journal

Computational and Theoretical Challenges for Computing the Minimum Rank of a Graph

Hicks, I. V., Brimkov, B., Deaett, L., Haas, R., Mikesell, D., Roberson, D., Smith, L.

INFORMS Journal on Computing August (2022)

Peer Reviewed Journal

Algebraic conditions and the sparsity of spectrally arbitrary patterns

Deaett, L., Garnett, C.

9 Special Matrices 257-274 April (2021)

Peer Reviewed Journal

Matroids and the minimum rank problem for matrix patterns

Deaett, L.

127(9) The American Mathematical Monthly 771-788 October (2020)

Peer Reviewed Journal

Non-sparse companion matrices

Deaett, L., Fischer, J., Garnett, C., Vander Meulen, K.

35 The Electronic Journal of Linear Algebra 223-247 June (2019)

Peer Reviewed Journal

Singularities of Base Polynomials and Gau-Wu Numbers

Camenga, K., Deaett, L., Rault, P., Sendova, T., Spitkovsky, I., Johnson Yates, R.

581 Linear Algebra and its Applications 112-127 November (2019)