Upcoming activities



  1. (postponed due to Coronavirus pandemic) 3.22 - 3.28.2020, Invited to speak in the Cornell Discrete Geometry and Combinatorics Seminar, and having a research visit with Karola Mészáros and Avery St. Dizier, Cornell University, Ithaca, NY.
  2. (postponed due to Coronavirus pandemic) 4.14 - 4.18.2020, Invited to speak in the Combinatorics Seminar, Washington University in St. Louis, MO.
  3. (postponed due to Coronavirus pandemic) 5.4 - 5.6.2020, Giving a preparatory lecture for June Huh's Chow Lectures at MPI Leipzig.
  4. (postponed until Summer 2021 due to Coronavirus pandemic) 7.6 - 7.9.2020, Invited to give a talk in a Suzhou Workshop on Geometry, Combinatorics and Representation Theory, Soochow University, China.

Conference Organization



Past activities



  1. 5.14 - 5.15.2020, Spoke on "A semi-small decomposition of the Chow ring of a matroid" in Arrangements at Home, a virtual workshop hosted by Western University on Zoom.
  2. 1.27 - 1.31.2020, Participated in an AIM SQuaRE on "Moduli spaces of connections with toral singularities" (together with Maitreyee Kulkarni, Neal Livesay, Bach Nguyen, and Daniel Sage) at the American Institute of Mathematics, San Jose, CA.
  3. 1.23.2020, Spoke on both "Singular Hodge theory of matroids" and "Logarithmic concavity of weight multiplicities for irreducible sln(C)-representations" in the Oberseminar, Max Planck Institute for Mathematics, Bonn, Germany.
  4. 12.14 - 12.16.2019, Spoke on "Logarithmic concavity of weight multiplicities for irreducible sln(C)-representations" in the Geometry and Representation Theory mini-conference, University of California at Riverside, CA.
  5. 11.9 - 11.10.2019, Spoke on "Logarithmic concavity of weight multiplicities for irreducible sln(C)-representations" in the AMS Special Session on Geometric Methods in Representation Theory at AMS Fall Western Sectional Meeting, University of California at Riverside, CA.
  6. 10.15.2019, Spoke on "Singular Hodge theory of matroids" in the Algebra Seminar at the University of Oregon.
  7. 9.4 - 9.8.2019, Gave a Karcher Colloquium titled "Two problems about hyperplane arrangements" and had a research visit with Greg Muller at the University of Oklahoma, Norman, OK.
  8. 7.22 - 7.26.2019, Working group leader for "Geometry and combinatorics of matroids" group at SageMath and Macaulay2 - an Open Source Initiative, Institute for Mathematics and its Applications, University of Minnesota.
  9. 6.23 - 6.29.2019, Spoke on "Logarithmic concavity of Schur and related polynomials" in the KIAS Workshop on Algebra-Geometry-Combinatorics and had a research visit (to visit June Huh), Korea Institute for Advanced Study (KIAS).
  10. 6.17 - 6.21.2019, Attended Cluster Algebras 2019, RIMS, Kyoto University, Kyoto, Japan.
  11. 5.21 - 5.31.2019, Attended and spoke on "Singular Hodge theory of matroids" at Arrangements at Western, University of Western Ontario, London, ON, Canada.
  12. 4.27 - 4.28.2019, Attended the Maurice Auslander Distinguished Lectures and International Conference, Woods Hole Oceanographic Institute, Quissett Campus, Woods Hole, MA.
  13. 4.22.2019, Spoke on "Kazhdan-Lusztig polynomials of matroids" in the Temple University Algebra Seminar, Temple University, Philadelphia, PA.
  14. 4.6.2019, Attended Discrete Math Days of the Northeast, University of Massachusetts Amherst, Amherst, MA.
  15. 4.4.2019, Spoke on "Two problems about hyperplane arrangements (secretly about matroids)" in the colloquium in the Department of Mathematics and Computer Science at Wesleyan University, Middletown, CT.
  16. 3.25.2019, Spoke on "Singular Hodge theory of matroids" in the Joint Princeton University and IAS Algebraic Geometry Seminar, IAS.
  17. 3.15 - 3.17.2019, Spoke on "Kazhdan-Lusztig polynomials of matroids" in the AMS Special Session on Representations of Lie algebras, algebraic groups, and quantum groups at AMS Spring Southeastern Sectional Meeting, Auburn University, Auburn, AL.
  18. 2.27.2019, Spoke in the Algebraic Geometry and Commutative Algebra Seminar, University of Notre Dame, South Bend, IN.
  19. 1.5 and 1.7.2019, Gave two talks on graph theory to ninth graders at the New English School, Pune, India.
  20. 1.4.2019, Gave a Math Colloquium at the Indian Institute of Science Education and Research (IISER), Pune, India.
  21. 12.8 - 12.22.2018, Gave a mini-course (four lectures) on "Introduction to cluster algebras and their types" in the School on Cluster Algebras, International Centre for Theoretical Sciences (ICTS), Bangalore, India.
  22. 11.17 - 11.19.2018, Spoke on "Singular Hodge theory of matroids" at Conferences on Geometric Methods in Representation Theory (CGMRT), University of Iowa, Iowa City, Iowa.
  23. 11.8 - 11.11.2018, Attended Combinatorics and beyond: the many facets of Sergey Fomin's mathematics (FominFest60), University of Michigan.
  24. 10.13 - 10.14.2018, Spoke on "Two problems about hyperplane arrangements (secretly about matroids)" at Binghamton University's Graduate Conference in Algebra and Topology (BUGCAT2018), also visiting collaborator Christopher Eppolito, Binghamton University, NY.
  25. 7.9 - 7.13.2018, Co-organizer of Summer School on Geometric Representation Theory, Institute of Science and Technology (IST) Austria, Klosterneuburg, Austria.
  26. 6.30 - 7.7.2018, Research visit (to visit June Huh), Korea Institute for Advanced Study (KIAS).
  27. 6.5 - 6.16.2018, Spoke on “Singular Hodge theory of matroids” at the 6th Encuentro Colombiano de Combinatoria (ECCO 2018), Universidad del Norte, Barranquilla, Colombia.
  28. 5.7 - 5.12.2018, Gave a poster on “Singular Hodge theory of matroids” at the Cluster Algebras and Mathematical Physics (CAMP) Conference, Michigan State University, East Lansing, MI.
  29. 4.25 - 4.30.2018, Spoke on “Singular Hodge theory of matroids” at the Maurice Auslander Distinguished Lectures and International Conference, Woods Hole Oceanographic Institute, Quissett Campus, Woods Hole, MA.
  30. 4.21 - 4.22.2018, Spoke on “Derived geometric Satake equivalence, Springer correspondence, and small representations” in the AMS Special Session on Noncommutative Algebra and Representation Theory at AMS Spring Eastern Sectional Meeting, Northeastern University, Boston, MA.
  31. 4.10.2018, Spoke on “Singular Hodge theory of matroids” in the Combinatorics Seminar, Binghamton University, Binghamton, NY.
  32. 4.9.2018, Spoke on “Derived geometric Satake equivalence, Springer correspondence, and small representations” in the Arithmetic Seminar, Binghamton University, Binghamton, NY.
  33. 4.7 - 4.11.2018, Research visit (to visit Christopher Eppolito and Jaiung Jun), Binghamton University.
  34. 3.19 - 3.23.2018, Attended Cluster Algebras: Twenty Years On, CIRM - Luminy, France.
  35. 11.28 - 12.2.2017, Research visit (to visit June Huh), Institute for Advanced Study (IAS).
  36. 11.19 - 11.24.2017, Research visit (to visit Eric Bucher), Michigan State University.
  37. 11.3.2017, Spoke on “Kazhdan–Lusztig polynomials of matroids” in the Representation Theory Seminar, Northeastern University, Boston, MA.
  38. 10.9 - 10.13.2017, Attended the workshop Geometric and Topological Combinatorics: Modern Techniques and Methods, MSRI, Berkeley, CA.
  39. 9.9 - 9.10.2017, Spoke on “Kazhdan–Lusztig polynomials of matroids” in the AMS Special Session on Combinatorics and Representation Theory of Reflection Groups: Real and Complex at AMS Fall Central Sectional Meeting, University of North Texas, Denton, TX.
  40. 9.9 - 9.10.2017, Spoke on “Derived geometric Satake equivalence, Springer correspondence, and small representations” in the AMS Special Session on Noncommutative and Homological Algebra at AMS Fall Central Sectional Meeting, University of North Texas, Denton, TX.
  41. 8.13 - 8.17.2017, Research visit (to visit Nicholas Proudfoot), University of Oregon.
  42. 8.6 - 8.11.2017, Sage Coding Sprint for Double Bruhat Cells and Cluster Algebras at the Institute for Mathematics and its Applications, University of Minnesota.
  43. 7.20 - 7.25.2017, Research visit (to visit Greg Muller), University of Oklahoma.
  44. 5.15 - 5.19.2017, Cluster Algebra Spring School, University of Connecticut.
  45. 5.6 - 5.7.2017, Spoke on “A combinatorial Fourier transform for quiver representation varieties in type A” in the AMS Special Session on Cluster Algebras in Representation Theory and Combinatorics at AMS Spring Eastern Sectional Meeting, Hunter College, City University of New York.
  46. 4.27 - 4.30.2017, Spoke on “A combinatorial Fourier transform for quiver representation varieties in type A” in the Maurice Auslander Distinguished Lectures and International Conference, Woods Hole Oceanographic Institute, Quissett Campus, Woods Hole, MA.
  47. 4.13.2017, Spoke on “The linear algebra of noncrossing spanning trees in a disk” in the Smith College Center for Women in Mathematics Thursday Lunch Talks at Smith College, Northampton, MA.
  48. 3.24 - 3.28.2017, Spoke on “A combinatorial Fourier transform for quiver representation varieties in type A” in the Algebra Seminar during a research visit (to visit Laura Rider) at University of Georgia, Athens, GA.
  49. 1.16 - 1.27.2017, Spoke on “A combinatorial Fourier transform for quiver representation varieties in type A” at Geometry and Representation Theory, Erwin Schrödinger International Institute for Mathematics and Physics (ESI), Vienna, Austria.
  50. 1.4 - 1.7.2017, Spoke on “A combinatorial Fourier transform for quiver representation varieties in type A” in the AMS Special Session on Representations and Related Geometry in Lie Theory at Joint Mathematics Meetings 2017, Hyatt Regency Atlanta and Marriott Atlanta Marquis.
  51. 1.2.2017, Spoke on "A combinatorial Fourier transform for quiver representation varieties in type A" in the research seminar at the Indian Institute of Science Education and Research (IISER), Pune, India.
  52. 11.11.2016, Spoke on “Presentations of cluster algebras” in the Cluster Algebras Seminar, University of Connecticut.
  53. 11.4 - 11.6.2016, Gave a poster on “Combinatorial Fourier transform for type A quiver representation varieties” Algebraic Geometry Northeastern Series (AGNES Fall 2016), University of Massachusetts-Amherst.
  54. 10.28 - 10.30.2016, Workshop on Symplectic Varieties and Geometric Representation Theory, University of North Carolina at Chapel Hill.
  55. 9.20.2016, Spoke on “A combinatorial Fourier transform for quiver representation varieties in type A” in the Algebra/Combinatorics/Geometry Seminar at Smith College.
  56. 8.10 - 8.19.2016, Spoke on "Derived geometric Satake equivalence, Springer correspondence, and small representations" at International Conference on Representations of Algebras (ICRA 2016), Syracuse University.
  57. 5.24 - 5.27.2016, Spoke on "Derived geometric Satake equivalence, Springer correspondence, and small representations" at Algebraic Groups, Quantum Groups and Geometry, Southeastern Lie Theory Workshop, University of Virginia.
  58. 5.9 - 5.13.2016, Advances in Geometric Representation Theory, University of Michigan.
  59. 4.7 - 4.10.2016, Spoke on "Derived geometric Satake equivalence, Springer correspondence, and small representations" at Symplectic Duality and Gauge Theory, Perimeter Institute for Theoretical Physics, Waterloo, Canada.
  60. 3.28 - 4.1.2016, Sheaves and modular representations of reductive groups, American Institute of Mathematics, San Jose, CA.
  61. 1.6 - 1.9.2016, Spoke on "Derived geometric Satake equivalence, Springer correspondence, and small representations" at the Joint Mathematics Meetings 2016, Washington State Convention Center, Seattle, WA.
  62. 11.6 - 11.7.2015, Workshop on Lie Groups, Lie Algebras and their Representations, Louisiana State University.
  63. 10.9 - 10.11.2015, Southeastern Lie Theory Workshop, North Carolina State University.
  64. 6.28 - 7.18.2015, PCMI Graduate Summer School: Geometry of moduli spaces and representation theory, Park City Math Institute.
  65. 6.1 - 6.5.2015, Sage Days 64.5: Cluster Algebras, Institute for Mathematics and its Applications, University of Minnesota.
  66. 3.13.2015, Spoke on "Combinatorics of Exceptional Sequences in Type A" in the Combinatorics Seminar, University of Minnesota.
  67. 1.12.2015, Spoke on "Linear Extensions and Exceptional Sequences" at the Joint Mathematics Meetings 2015, Henry B. Gonzalez Convention Center, San Antonio, TX.
  68. 8.28 - 12.1.2014, Geometric Representation Theory, MSRI.
  69. 8.4 - 8.8.2014, Kazhdan-Lusztig Theory and Soergel Bimodules, University of Oregon.
  70. 6.8 - 6.14.2014, Cluster Algebras, Snowbird Resort, Utah.
  71. 5.19 - 5.23.2014, Representations of Reductive Groups: A conference dedicated to David Vogan on his 60th birthday, MIT.
  72. 5.16 - 5.17.2014, Southeastern Lie Theory Workshop 2014, University of Georgia.
  73. 4.12 - 4.15.2014, Applications of Automorphic Forms in Number Theory and Combinatorics, Louisiana State University.
  74. 11.7.2013, Spoke on Computing Upper Cluster Algebras in the Commutative Algebra Seminar, University of Michigan.
  75. 8.5 - 8.9.2013, Quantum/Affine Schubert Calculus, University of Oregon.
  76. 5.10 - 5.12.2013, Southeastern Lie Theory Workshop 2013, Louisiana State University.
  77. 3.18 - 3.22.2013, Soergel Bimodules and Kazhdan-Lusztig Conjectures, Center for Quantum Geometry of Moduli Spaces.
  78. 12.16 - 12.18.2012, Southeastern Lie Theory Workshop 2012, College of Charleston.
  79. 10.13 - 10.14.2012, AMS Fall Southeastern Section Meeting; Special Session on Geometric and Algebraic Aspects of Representation Theory, Tulane University.
  80. 10.6 - 10.7.2012, Workshop on Lie Groups, Lie Algebras, and their Representations, Louisiana State University.
  81. 6.18 - 6.29.2012, Noncommutative Algebraic Geometry Summer Graduate Workshop, MSRI.
  82. 1.4 - 1.7.2012, Joint Mathematics Meetings 2012, Hynes Convention Center, Boston, MA.
  83. 5.31 - 6.4.2011, Summer School on Quantization and Related Topics, Center for Mathematics at the University of Notre Dame.