John Lentfer
Department of Mathematics, UC Berkeley
About me

I am a third year PhD student in the math department at UC Berkeley. My advisor is Mark Haiman. My primary research interests are in algebraic and enumerative combinatorics. In particular, I am currently working on problems related to the combinatorics of diagonal coinvariant spaces. I completed my BS in mathematics at Harvey Mudd College in 2021.

Email:
Office: 1064 Evans Hall
Office Hours: MW 4:00-5:00pm (Fall 2023)
Pronouns: he/him/his

Seminar

Fall 2023: I am co-organizing the Combinatorics research seminar with Nicolle González and Mitsuki Hanada.

Spring 2023: I am co-organizing the Combinatorics research seminar with Andrés R. Vindas Meléndez, Christopher Ryba, and Mitsuki Hanada.

Fall 2022: I am co-organizing the Combinatorics student seminar with Mitsuki Hanada. I am also co-organizing the Combinatorics research seminar with Andrés R. Vindas Meléndez, Christopher Ryba, and Mitsuki Hanada.

Research

Please click on the paper title to show or hide the abstract.

  • Generalized parking function polytopes, with Mitsuki Hanada and Andrés R. Vindas Meléndez. arXiv:2212.06885 [math.CO] (2022).
Undergraduate Research

Please click on the paper title to show or hide the abstract.

  • A tiling interpretation of a generalized Zeckendorf's theorem, with Arthur T. Benjamin. Integers 22, Paper A104, 35 p. (2022).
  • An introduction to completeness of positive linear recurrence sequences, with Elżbieta Bołdyriew, John Haviland, Phúc Lâm, Steven J. Miller, and Fernando Trejos Suárez. Fibonacci Q. 58, No. 5, 77-90 (2020).
  • Counting on Euler and Bernoulli number identities, with Arthur T. Benjamin and Thomas C. Martinez. Fibonacci Q. 58, No. 5, 30-33 (2020).
Activities

Dimers: Combinatorics, Representation Theory and Physics at the Graduate Center, CUNY; August 14-25, 2023; New York, NY

Graduate Research Workshop in Combinatorics; July 23-August 4, 2023; Laramie, WY

Formal Power Series and Algebraic Combinatorics; July 17-21, 2023; Davis, CA

Lake Michigan Workshop on Combinatorics and Graph Theory; May 13-14, 2023; South Bend, IN

AMS Western Sectional at CSU Fresno; May 6-7, 2023; Fresno, CA

AIM Workshop - Gems of Combinatorics; March 27-31, 2023; San José, CA

Graduate Student Combinatorics Conference at WUSTL; Speaker; March 17-19, 2023; St. Louis, MO

Latinxs in the Mathematical Sciences at IPAM/UCLA; Math Circle co-lead; July 7-9, 2022; Los Angeles, CA

Teaching

Fall 2023: Head GSI for Math 55: Discrete Mathematics (Section 113) with Sylvie Corteel.

Summer 2022: Instructor for Math N55: Discrete Mathematics (Section 003).

Spring 2022: GSI for Math 1B: Calculus (Sections 203 & 207) with Sung-Jin Oh.