I am primarily interested in combinatorics; so far, I've mostly worked in structural graph theory and graph colouring. If you'd like to chat research, please get in touch!

Papers & Preprints

Published Papers
  1. L. Postle and E. Smith-Roberge. Local girth choosability of planar graphs. Advances in Combinatorics (2022)
  2. B. Moore and E. Smith-Roberge. A density bound for triangle-free 4-critical graphs. Journal of Graph Theory (2022)
  3. L. Postle and E. Smith-Roberge. On the density of C7-critical graphs. Combinatorica (2022)
  4. F. Javid, E. Smith-Roberge, M. Innes, J. Weaver, A. Shanian, K. Bertoldi. Dimpled elastic sheets: a new class of non-porous negative Poisson's ratio materials. Scientific Reports (2015)Not a math paper.

Talks: Videos & Slides

See my CV for a full list of talks I've given. Here's a video of a talk I gave at the University of Waterloo's Graphs and Matroids seminar. It's about the main result in Luke Postle's and my paper Local girth choosability of planar graphs.


    Georgia Tech

    1. Spring 2024: Applied Combinatorics (MATH 3012) NB: current students should see our Canvas page for all course materials.
    2. Fall 2023: Introduction to Graph Theory (MATH 4022)
    3. Spring 2023: Applied Combinatorics (MATH 3012)
    4. Fall 2022: Applied Combinatorics (MATH 3012)

    University of Waterloo

    1. Fall 2021: Introduction to Combinatorics (MATH 239)


High School Math Day

[For info on the 2024 edition of HSMD, see here!] Trevor Gunn, Wade Bloomquist, and I co-organized High School Math Day 2023, an expansion of Georgia Tech's High School Math Competition (first held in 1958). Together, we broadened the scope of the event in order to attract more curious students from all backgrounds to come explore their love of mathematics. Some of the changes we implemented included:

  1. A new logic-based competition track focussing on puzzle-based mathematics (in addition to the traditional algebra/geometry track)
  2. Prizes (pop-math books from a local bookstore) for new competitors, as well as for coming up with creative solutions to open-ended problems
  3. Board games, Sudoku, and other interactive math-related activities
HSMD attendees came from 42 schools around Georgia. See here for an article about the event by Renay San Miguel.

Math Circles

While a grad student at the University of Waterloo, I was involved in the Faculty of Maths' Math Circles: an after-school math enrichment program for students in grades six through twelve. I presented to and created worksheets for middle- and high-school students on various topics including graph theory, continued fractions, spatial visualization, and origami. To access materials from past iterations of Math Circles, see here.


Sometimes I climb things. Sometimes I run around. Sometimes I write silly poems.