Research


My research is in commutative algebra, with a focus on its homological aspects. I have a particular interest in studying properties of commutative rings using theories of cohomological support and structures on resolutions. I often work with triangulated categories as they are well-suited to study such data, and it allows me to draw on ideas from a variety of other areas such as homotopy theory and representation theory. I am interested in continuing this research program with an emphasis on understanding ring theoretic properties in terms of cohomological support and triangulated categories, as well as other homological invariants.


Below are my published articles (listed by journal publication date):

  1. The derived category of a locally complete intersection ring
    Advances in Mathematics (2019): arXiv version, journal version

  2. Equivariant isomorphisms of Ext and Tor modules
    Journal of Algebra (2020): arXiv version, journal version

  3. Duality and symmetry of complexity over complete intersections via exterior homology with Jian Liu
    Proceedings of the American Mathematical Society (2021): arXiv version, journal version

  4. Cohomological supports over derived complete intersections and local rings
    Mathematische Zeitschrift (2021): arXiv version, journal version

  5. Support varieties over skew complete intersections via derived braided Hochschild cohomology with Luigi Ferraro and W. Frank Moore
    Journal of Algebra (2022): arXiv version, journal version

  6. Cohomological supports of tensor products of modules over commutative rings with Srikanth Iyengar and William Sanders
    Research in the Mathematical Sciences (2022): arXiv version, journal version

  7. Constructing non-proxy small test modules for the complete intersection property with Ben Briggs and Eloísa Grifo
    Nagoya Mathematical Journal (2022): arXiv version, journal version

  8. Locally complete intersection maps and the proxy small property with Ben Briggs, Srikanth Iyengar, and Janina Letz
    International Mathematics Research Notices IMRN (2022): arXiv version, journal version

  9. Exceptional complete intersection maps of local rings with Srikanth Iyengar, Janina Letz, and Jian Liu

Pacific Journal of Mathematics (2022): arXiv version, journal version

  1. A partial converse ghost lemma for the derived category of a commutative noetherian ring with Jian Liu

Proceedings of the American Mathematical Society (accepted for publication): arXiv version


Below are preprints submitted for publication:

  1. Cohomological jump loci and duality in local algebra with Ben Briggs and Daniel McCormick
    arXiv version

  2. A comparison of dg algebra resolutions with prime residual characteristic with Michael DeBellevue
    arXiv version

  3. The homotopy Lie algebra of a Tor-independent tensor product with Luigi Ferraro, Mohsen Gheibi, Dave Jorgensen and Nicholas Packauskas
    arXiv version

  4. Resolutions of differential operators of low order for an isolated hypersurface singularity joint with Rachel Diethorn, Jack Jeffries, Claudia Miller, Nick Packauskas, Hamid Rahmati, and Sophia Vassiliadou
    arXiv version

  5. Bounds on cohomological support varieties with Ben Briggs and Eloísa Grifo
    arXiv version


Below is interesting work in progress:

Below is my PhD thesis:

Thesis (2019), Digital Commons PDF


Software:


I am a coauthor of the ThickSubcategories package for Macaulay2 with Eloísa Grifo and Janina Letz. (Note: This is still under construction but available for use, click the first link.)

Utah Research Group:
  1. 2022 Group (see also selfie)
  2. 2019 Group (see also selfie)