Lillian Webster's Home Page

Contact Info

Lilly Webster
  Email: webst390@math.umn.edu
  Office: Vincent Hall 358
  Phone: (612) 625-3896
  206 Church St SE
  Minneapolis, MN 55455 USA

CV (Updated January 2020)

Office Hours

Spring 2020:
      3pm - 4pm Tuesday
      12pm - 1pm Thursday
      By appointment

Research Interests

Algebraic combinatorics, particularly cluster algebras and the Grassmannian.

Teaching

Spring 2020: Math 3593H


Please refer to the Canvas site for all course information going forward. As much as possible, all of the course content will be located there. Please email me with questions.

Canvas Page
Professor Keel's website
Course Schedule
Course Information

Homework

1/30:
    3.6: 1a (use Gauss-Jordan method), 2, 4ab, 5, 9
        Do not use methods from later sections to complete problems in 3.6
    3.11: 1ab, 2a, 3, 5
    3.17: 1ab, 2ab, 3a, 4, 7, 8
Solutions

2/7:
    4.4: 1, 4, 5, 7, 11
    4.8: 1acd, 2, 3, 7a, 8a, 10, 11, 14
    Additional Problems
Solutions

2/14:
    4.10: 1, 2ac, 4a, 6, 7
    5.5: 1, 3
    5.11: 1, 2, 3, 4, 6, 7, 13
    Additional Problem
Solutions

2/21:
    5.15: 1, 5, 8, 9
    5.20: 1, 2, 3, 4, 6
    8.3: 1abd, 2ac, 3bd, 4, 9
    8.5: 2, 4, 6
    8.9: 1, 3, 4, 5, 8, 9, 10, 18
Solutions

2/28:
    8.14: 1ace, 3, 4, 9, 10
    8.17: 1ab, 2a, 3, 4, 6, 12
Additional Problem
Solutions

3/20:
    8.22: 1, 2, 3, 5, 13, 14, 15
    8.24: 1, 3, 12
    9.8: 1, 2, 3, 4, 5, 12

Discussion Notes

1-21
1-23
1-28
1-30
2-4
2-6
2-13
2-14
2-25

Other Documents

Fall 2019 Documents
Linear Algebra review sheet
Linear Algebra review solutions

Publications

Shifted Hecke insertion and the K-theory of OG(n, 2n + 1) (with Z. Hamaker, A. Keilthy, R. Patrias, Y. Zhang, and S. Zhou), pdf, Journal of Combinatorial Theory, Series A 151:207-240, 2017.
Involution Subword Complexes in Coxeter Groups (with Z. Hamaker, A. Keilthy, B. Pawlowski, Y. Zhang, and S. Zhou), in progress.

Documents

Links

Student Combinatorics and Algebra Seminar

American Mathematical Society
Spectra
Association for Women in Mathematics
School of Mathematics
College of Science and Engineering
University of Minnesota

The views and opinions expressed in this page are strictly those of the page author. The contents of this page have not been reviewed or approved by the University of Minnesota.