Daniel Orr
Associate Professor
Department of Mathematics
Virginia Tech
530 McBryde Hall
dorr@math.vt.edu
Research
My research lies in representation theory and algebraic combinatorics. I am primarily interested in structures related to Hecke algebras, Lie algebras, and Macdonald polynomials.
Preprints
- Ben Goodberry and Daniel Orr
A geometric realization of partially-symmetric Macdonald polynomials
arXiv
- Evgeny Feigin, Anton Khoroshkin, Ievgen Makedonskyi, and Daniel Orr
Peter-Weyl theorem for Iwahori groups and highest weight categories
arXiv
- Evgeny Feigin, Ievgen Makedonskyi, and Daniel Orr
Nonsymmetric q-Cauchy identity and representations of the Iwahori algebra
arXiv
- Daniel Orr, Mark Shimozono, and Joshua Jeishing Wen
Wreath Macdonald operators
arXiv
Publications
- Daniel Orr and Mark Shimozono
Wreath Macdonald polynomials, a survey
Contemporary Mathematics, to appear (2023).
arXiv
- Daniel Orr and Mark Shimozono
Difference operators for wreath Macdonald polynomials
Proceedings of Symposia in Pure Mathematics, to appear (2023).
arXiv
- Takafumi Kouno, Satoshi Naito, and Daniel Orr
Identities of inverse Chevalley type for graded characters of level-zero Demazure submodules over quantum affine algebras of type C
Algebras and Representation Theory, to appear (2023).
journal
arXiv
- Daniel Orr
Equivariant K-theory of the semi-infinite flag manifold as a nil-DAHA module
Selecta Mathematica (N.S.) 29 (2023), no. 3, Paper No. 45, 26 pp.
journal
arXiv
- Cristian Lenart, Satoshi Naito, Daniel Orr, and Daisuke Sagaki
Inverse K-Chevalley formulas for semi-infinite flag manifolds, II: arbitrary weights in ADE type
Advances in Mathematics 423 (2023), Paper No. 109037, 63 pp.
journal
arXiv
- Daniel Orr, Mark Shimozono, and Joshua Jeishing Wen
Wreath Macdonald operators (extended abstract)
FPSAC Proceedings, to appear (2023).
journal
arXiv
- Daniel Orr and Mark Shimozono
Quiver Hall-Littlewood functions and Kostka-Shoji polynomials
Pacific Journal of Mathematics 319 (2022), no. 2, 397-437.
journal
arXiv
- Daniel Orr and Mark Shimozono
On cyclic quiver parabolic Kostka-Shoji polynomials
Journal of Combinatorial Theory, Series A 190 (2022), Paper No. 105634.
journal
arXiv
- Takafumi Kouno, Satoshi Naito, Daniel Orr, and Daisuke Sagaki
Inverse K-Chevalley formulas for semi-infinite flag manifolds, I: minuscule weights in ADE type
Forum of Mathematics Sigma 9 (2021), Paper No. e51, 25 pp.
journal
arXiv
- Satoshi Naito, Daniel Orr, and Daisuke Sagaki
Chevalley formula for anti-dominant weights in the equivariant K-theory of semi-infinite flag manifolds
Advances in Mathematics 387 (2021), Paper No. 107828, 59 pp.
journal
arXiv
- Dinakar Muthiah and Daniel Orr
On the double-affine Bruhat order: the ε = 1 conjecture and classification of covers in ADE type
Algebraic Combinatorics 2 (2019), no. 2, 197-216.
journal
arXiv
- Evgeny Feigin, Ievgen Makedonskyi, and Daniel Orr
Generalized Weyl modules and nonsymmetric q-Whittaker functions
Advances in Mathematics 330 (2018), 997-1033.
journal
arXiv
- Dinakar Muthiah and Daniel Orr
Walk algebras, distinguished subexpressions, and point counting in Kac-Moody flag varieties
Representations of Lie algebras, quantum groups and related topics, 187-203, Contemporary Mathematics, 713, Amer. Math. Soc., Providence, RI, 2018.
volume
arXiv
- Daniel Orr and Mark Shimozono
Specializations of nonsymmetric Macdonald-Koornwinder polynomials
Journal of Algebraic Combinatorics 47 (2018), no. 1, 91-127.
journal
arXiv
- Daniel Orr and Leonid Petrov
Stochastic higher spin six vertex model and q-TASEPs
Advances in Mathematics 317 (2017), 473-525.
journal
arXiv
- Ivan Cherednik and Daniel Orr
Nonsymmetric difference Whittaker functions
Mathematische Zeitschrift 279 (2015), no. 3-4, 879-938.
journal
arXiv
- Ivan Cherednik and Daniel Orr
One-dimensional nil-DAHA and Whittaker functions II
Transformation Groups 18 (2013), no. 1, 23-59.
journal
arXiv
- Ivan Cherednik and Daniel Orr
One-dimensional nil-DAHA and Whittaker functions I
Transformation Groups 17 (2012), no. 4, 953-987.
journal
arXiv
Talk slides, etc.
Slides and
video
from a talk ''Specializations of nonsymmetric Macdonald polynomials at infinity''
at the workshop Whittaker Functions: Number Theory, Geometry, and Physics, Banff International Research Station (October 2013).