My research is primarily in operator algebras, specifically C*-algebras. Currently, my specialized interests are in structural properties of C*-algebras, families of representations of C*-algebras, lifting problems, universal C*-algebras, interplay between discrete/ locally compact Hausdorff groups and their universal associated C*-algebras, and complex algebras associated to groupoids.
B. Armstrong, L. Orloff Clark, K. Courtney, Y-F. Lin, K. McCormick, and J. Ramagge. “Twisted Steinberg algebras,” arXiv:1910.13005.
K. Courtney, “Universal C*-algebras with the Local Lifting Property,” to appear in Math. Scand., (arXiv:2002.02365).
K. Courtney, D. Sherman. “The universal C*-algebra of a contraction,” J. Operator Theory, 84 (2020), Issue 1, 153-184. (arXiv:1811.04043).
K. Courtney, T. Shulman. “Elements of C*-algebras attaining their norm in a finite-dimensional representation,” Canad. J. Math. 71 (2019), Issue 1,
K. Courtney, T. Shulman. “Free products with amalgamation over central C*-subalgebras,” to appear in Proc. Amer. Math. Soc., (arXiv:1809.09134).