11th grade · Stanford Online High School

Etienne Pema La Fleur

I like simple questions with surprising answers, and the math it takes to find them.

Etienne Pema La Fleur in front of a painted mural
Research

How Network Structure Shapes Epidemics

Comparing random, small-world and scale-free contact networks with SIR simulations

With Dr. Deena Schmidt, Department of Mathematics and Statistics, University of Nevada, Reno · Fall 2026

I simulate outbreaks on 500-person contact networks (random, small-world, and scale-free) to ask which structural properties, beyond the average number of contacts, predict how large and how fast an epidemic gets. Building on Ames et al. (2011) and Pérez-Ortiz et al. (2022), early results suggest that clustering, not the distance between people, keeps outbreaks small, and that global efficiency is the best single predictor. Next: separating clustering from the spread in contacts.

In progress

Fourier Analysis Through the Lens of Linear Algebra

Euler Circle · March 2026

Fourier analysis rests on the claim that a broad class of functions can be written as an infinite sum of sines and cosines. I argue that both the claim and the coefficient formulas become natural once viewed through linear algebra: the integral of a product of two functions behaves like a dot product, the trigonometric functions form an orthogonal set, and the coefficient formulas follow from the same orthogonal projection used for vectors in Rn.

Paper link coming soon

AI and the Future of Work: Analyzing Job Exposure to Generative AI

Inspirit AI Scholars Program · Summer 2026 · Inspirit AI Scholar certificate

In a six-person team, we studied how AI is changing jobs, using occupation data from O*NET and job-posting trends from Indeed. Each of us built an app; mine, the AI Insight Dashboard, is an interactive dashboard showing which jobs AI affects and by how much, and whether it automates tasks or helps people do them better. Our takeaway: AI is changing jobs more than replacing them.

Live demo link coming soon
Coursework

University-level courses

Stanford Online High School

  • Discrete Mathematics
  • Real Analysis
  • Data Structures and Algorithms

University of Nevada, Reno

  • Linear Algebra
  • Principles of Microeconomics

UC San Diego Extension

  • Multivariable Calculus
  • Java Programming II
  • General Biology II
  • General Physics I

I also took AP United States History and AP English Language (BYU), and two years of Latin.

Competition math
  • 20262nd place, Nevada State Mathematics Championship, Level 4 (grades 9 and 10), and 1st place team
  • 20261st place, ARML local competition (grades 9 to 12)
  • 20261st place, MathRocks annual competition, Reno (grades 9 to 12, 2025 to 2026 season)
  • 20255th place, Nevada State Math Championship (grades 9 to 12)
  • 20257th place, ARML local competition; member of the NVMath ARML team
  • 20254th place, MathRocks annual competition, Reno (2024 to 2025 season)

I founded Reno Math, a six-student team that competed at the Berkeley Math Tournament. I volunteer as a tutor with NVMath, helping instill a love for math in younger students. I write original problems for MathRocks, a monthly competition for students in grades 1 to 8.

Etienne and teammates at a math tournament
With my teammates at a math tournament in Berkeley.
Robotics

FIRST Robotics

I've been building robots since 4th grade, starting with robotics classes. For the past three years I've been a member of the local Reno community robotics team.

I design robot components in Onshape, from drivetrains to manipulators, turning game strategy into parts that meet field rules and weight limits. I also raise funds at local events, write grants, serve as a member of the pit crew, and scout other teams during competitions.

  • 2026Competed at the FIRST World Championship, Houston
  • 2026Rookie All-Star Award, Las Vegas Regional
  • 20265th alliance captain, Idaho Regional
Etienne with teammates at the reveal of the team's robot, Hadron
Our robot reveal for Hadron.
Etienne working on the robot's wiring with teammates
Working on the robot with my teammates.
Enrichment

Enrichment programs

Euler Circle

  • Fundamentals of Higher Mathematics
  • Infinite Series
  • p-adic Analysis

Fall 2025 to Spring 2026 · college level

Art of Problem Solving

  • Intermediate Algebra
  • Intermediate Number Theory
  • Calculus
  • Infinity Seminar

Among several courses

AwesomeMath

  • Summer camp

Harvard Computer Society

  • AI Bootcamp

June 2025

Davidson Institute

  • Davidson Young Scholar

2024 to present

Languages
  • Albanian
  • French
  • Spanish
  • Latin
Also
  • Speech and debate
  • Violin
  • Martial arts
  • Community volunteering in Truckee
Writing

The Trapdoor

Simple questions. Ugly answers. My newsletter on the math hiding inside everyday questions. I've published twice a month since June 2026.

  1. Oct 15Why there are only five fair dice in the UniversePlatonic solids and Euler's Theorem
  2. Oct 1The Last Good SpotWhy it's so hard to find a parking spot, and the 37% rule
  3. Sep 15Why do cicadas disappear for exactly 13 to 17 years?
  4. Sep 1What's the most efficient way to stack oranges?
  5. Aug 15Why do rivers all over the world curve the same way?
  6. Aug 1Can you predict where a billiard ball will go?
  7. Jul 15What's the best way to cut a cake fairly?
  8. Jul 1Is there a fastest way to shuffle a deck of cards?
  9. Jun 15Can a voting system ever be truly fair?

Read all posts and subscribe →

Books

Before The Trapdoor, I wrote and published two books as a child: