Publications

Representation-theoretic symplectic geometry


Universal families of twisted cotangent bundles

Preprint (2023). ArXiv link


Hessenberg varieties and Poisson slices (with M. Roeser)

Contemporary Mathematics of the AMS 790 (2023), 25-57. Journal website link


Symplectic reduction along a submanifold (with M. Mayrand)

Compositio Mathematica 158 (2022), no. 9, 1878-1934. Journal website link


The log symplectic geometry of Poisson slices (with M. Roeser)

Journal of Symplectic Geometry 20 (2022), no. 1, 135-190. Journal website link 


Perverse sheaves and the cohomology of regular Hessenberg varieties (with A. Balibanu)

Transformation Groups. To appear. Journal website link 


An application of spherical geometry to hyperkahler slices (with M. van Pruijssen)

Canadian Journal of Mathematics 73 (2021), no. 3, 687–716. Journal website link 


Kostant–Toda lattices and the universal centralizer

Journal of Geometry and Physics 150 (2020), 16pp. Journal website link 


Hessenberg varieties, Slodowy slices, and integrable systems (with H. Abe)

Mathematische Zeitschrift 291 (2019), no. 3–4, 1093–1132. Journal website link 


Abstract integrable systems on hyperkahler manifolds arising from Slodowy slices (with S. Rayan)

Mathematical Research Letters 26 (2019), no. 1, 9–33. Journal website link 


Integrable systems and geometric quantization


Abelianization and the Duistermaat-Heckman theorem (with J. Weitsman)

Bulletin of the London Mathematical Society 55 (2023), no. 6,  2732-2742. Journal website link


On the singularities of Mishchenko-Fomenko systems (with M. Roeser)

Transformation Groups. 28 (2023), no. 4, 1477-1494. Journal website link


The double Gelfand-Cetlin system, invariance of polarization, and the Peter-Weyl theorem (with J. Weitsman)

Journal of Geometry and Physics 194 (2023). Special issue for the conference Poisson 2022. Journal website link


Gelfand-Cetlin abelianizations of symplectic quotients (with J. Weitsman)

Preprint (2022). ArXiv link


Towards a quantization of the double via the enhanced symplectic category (with J. Weitsman)

Research in the Mathematical Sciences 8 (2021), article no. 32, 51pp. Journal website link 


On the fibres of Mishchenko–Fomenko systems (with M. Roeser)

Documenta Mathematica 25 (2020), 1195–1239. Journal website link 


Slodowy slices and the complete integrability of Mishchenko-Fomenko subalgebras on regular adjoint orbits (with S. Rosemann and M. Roeser)

Preprint (2018). ArXiv link 


The geometry of adjoint orbits


Complex adjoint orbits in Lie theory and geometry

Expositiones Mathematicae 37 (2019), no. 2, 104–144. Journal website link 


An equivariant description of certain holomorphic symplectic varieties

Bulletin of the Australian Mathematical Society 97 (2018), no. 2, 207–214. Journal website link 


Hessenberg varieties for the minimal nilpotent orbit (with H. Abe)

Pure and Applied Mathematics Quarterly 12 (2016), no. 2, 183–223. Journal website link 


Some results on equivariant contact geometry for partial flag varieties (with S. Rayan)

International Journal of Mathematics 27 (2016), no. 8, 1650066, 13pp. Journal website link 


Properties of nilpotent orbit complexification

Journal of Generalized Lie Theory and Applications, no. S2, Art. ID 012, 6 pp. ArXiv link 


Generalized equivariant cohomology and stratifications (with T. Holden)

Canadian Mathematical Bulletin 59 (2016), no. 3, 483–496. Journal website link 


The torus-equivariant cohomology of nilpotent orbits

Journal of Lie Theory 25 (2015), no. 4, 1073–1087. Journal website link 


On projective equivalence of univariate polynomial subspaces (with R. Milson)

SIGMA. Symmetry, Integrability, and Geometry. Methods and Applications. 5 (2009), Paper 107. Journal website link