Welcome to my home page! I am an Assistant Professor in the department of mathematics at HKUST. My main research interests are in representation theory and algebraic combinatorics.
[Google scholar] [CV]Email: | emarberg@ust.hk | |
Address: | Room 3492, Lift 25-26 |
I've listed my papers and preprints below, organized by year of completion.
2018 | ||||
Linear compactness and combinatorial bialgebras
Preprint. |
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Bialgebras for Stanley symmetric functions
Preprint. |
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Stanley symmetric functions for signed involutions (with Brendan Pawlowski)
Preprint. |
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Atoms for signed permutations (with Zachary Hamaker)
Preprint. |
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2017 | ||||
On some actions of the 0-Hecke monoids of affine symmetric groups
Journal of Combinatorial Theory, Series A 161 (2019), 178–219. An extended abstract for this paper appeared in the proceedings of FPSAC 2018. |
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Fixed-point-free involutions and Schur P-positivity (with Zachary Hamaker and
Brendan Pawlowski)
Journal of Combinatorics, to appear. |
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Braid relations for involution words in affine Coxeter groups
Not intended for publication; superseded by arXiv:1704.08329, which proves Conjectures 1.7, 1.8, and 1.9. The accompanying Python code is available online here. |
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Schur P-positivity and involution Stanley symmetric functions (with Zachary Hamaker and
Brendan Pawlowski)
International Mathematics Research Notices (2017), rnx274. |
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2016 | ||||
Transition formulas for involution Schubert polynomials (with Zachary Hamaker and
Brendan Pawlowski)
Selecta Mathematica 24 (2018), 2991–3025. An extended abstract related to this paper appeared in the proceedings of FPSAC 2017. |
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Involution words II: braid relations and atomic structures (with Zachary Hamaker and
Brendan Pawlowski)
Journal of Algebraic Combinatorics 45 (2017), 701–743. |
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2015 | ||||
Involution words: counting problems and connections to Schubert
calculus for symmetric orbit closures (with Zachary Hamaker and
Brendan Pawlowski)
Journal of Combinatorial Theory, Series A 160 (2018), 217–260. Conjecture 1.6 is now a theorem in this paper with Brendan Pawlowski. |
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2014 | ||||
Variations of the Poincaré series for affine Weyl groups and
q-analogues of Chebyshev polynomials (with Graham White)
Advances in Applied Mathematics 82 (2017), 129–154. |
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Bar operators for quasiparabolic conjugacy classes in a Coxeter group
Journal of Algebra 453 (2016), 325–363. |
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Comparing and characterizing some constructions of canonical bases from Coxeter systems
Representations of Reductive Groups, Progress in Mathematics 312 (2015), 399–436. |
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2013 | ||||
Strong forms of linearization for Hopf monoids in species
Journal of Algebraic Combinatorics 42 (2015), 391–428. |
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Strong forms of self-duality for Hopf monoids in species
Transactions of the American Mathematical Society 368 (2016), 5433–5473. |
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Positivity conjectures for Kazhdan-Lusztig theory on twisted involutions: the finite case
The extended version of Fokko du Cloux's C++ program Coxeter referred to in this paper is available as this archive. Journal of Algebra 413 (2014), 198–225. |
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2012 | ||||
Positivity conjectures for Kazhdan-Lusztig theory on twisted involutions: the universal case
Representation Theory 18 (2014), 88–116. |
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Isomorphisms, automorphisms, and generalized involution models of projective reflection groups (with Fabrizio Caselli)
Israel Journal of Mathematics 199 (2014), 433–483. An extended abstract for this paper in the proceedings of CoMeTa 2013. |
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Crossings and nestings in colored set partitions
Electronic Journal of Combinatorics 20 (2013), no. 4, Research Paper 6, 30 pages. |
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How to compute the Frobenius-Schur indicator of a unipotent character of a finite Coxeter system
Advances in Mathematics 240 (2013), 484–519. The last open case of Conjecture 1.6, which restates Kottwitz's conjecture, is proved in this paper by Meinolf Geck and Abbie Halls. |
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2011 | ||||
Actions and identities on set partitions
Electronic Journal of Combinatorics 19 (2012), no. 1, Research Paper 28, 31 pages. |
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Heisenberg characters, unitriangular groups, and Fibonacci numbers
Journal of Combinatorial Theory, Series A 119 (2012), 882–903. |
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2010 | ||||
Combinatorial methods of character enumeration for the unitriangular group
The Magma code referred to in this paper is located in two files: [one] [two]. Journal of Algebra 345 (2011), 295–323. |
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Exotic characters of unitriangular matrix groups
Journal of Pure and Applied Algebra 216 (2012), 239–254. |
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Iterative character constructions for algebra groups
Advances in Mathematics 228 (2011), 2743–2765. |
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Supercharacters, symmetric functions in noncommuting variables, and related Hopf algebras (with
Marcelo Aguiar,
Carlos André,
Carolina Benedetti,
Nantel Bergeron,
Zhi Chen,
Persi Diaconis,
Anders Hendrickson,
Samuel Hsiao,
I. Martin Isaacs,
Andrea Jedwab,
Kenneth Johnson,
Gizem Karaali,
Aaron Lauve,
Tung Le,
Stephen Lewis,
Huilan Li,
Kay Magaard,
Jean-Christophe Novelli,
Amy Pang,
Franco Saliola,
Lenny Tevlin,
Jean-Yves Thibon,
Nathaniel Thiem,
Vidya Venkateswaran,
C. Ryan Vinroot,
Ning Yan, and
Mike Zabrocki)
Advances in Mathematics 229 (2012), 2310–2337. An extended abstract for this paper appeared in the proceedings of FPSAC 2011. |
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Automorphisms and generalized involution models of finite complex reflection groups
Journal of Algebra 334 (2011), 295–320. |
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Generalized involution models for wreath products
Israel Journal of Mathematics 192 (2012), 157–195. |
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2009 | ||||
Superclasses and supercharacters of normal pattern subgroups of the unipotent upper triangular matrix group
Journal of Algebraic Combinatorics 35 (2012), 61–92. |
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A supercharacter analogue for normality
Journal of Algebra 332 (2011), 334–365. |
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2008 | ||||
Constructing Modules of Algebra Groups
Stanford Undergraduate Honors Thesis (2008). Most of these results reappear, in a significantly improved form, in my three related papers from 2010. The upper bound in Theorem 5.1 has since been upgraded in this paper by Andrew Soffer. |
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2007 | ||||
Superinduction for pattern groups (with Nathaniel Thiem)
Journal of Algebra 321 (2009), 3681–3703. |