Hello, I am Arthus Goujon.

I am a student at École Polytechnique – Institut Polytechnique de Paris and HEC Paris, with a background in mathematics. I am interested in applied mathematics, machine learning, game theory, and quantitative finance.

This website gathers some of my research projects and other work.

Projects

Scores as Infrastructures
A dynamic game-theoretic model of strategic scoring, reputation, endogenous exposure and probabilistic auditing on digital platforms.
Game Theory Market Design Platform Economics
Optimal Routing in AMM-based Ecosystems
A convex optimization framework for optimal trade routing across networks of Constant Function Market Makers, with dual no-arbitrage certificates and numerical implementation in Python.
Quantitative Finance Convex Optimization DeFi
Mario Party: Tricky Turntable
An adaptive-agent benchmark combining game theory, Bayesian opponent modelling and reinforcement learning across more than 60 million simulated interactions.
Machine Learning Bayesian Learning Reinforcement Learning
Tiny Turntable Transformer
A small Transformer that learns hidden opponent behavior from recent interactions and combines sequence predictions with a game-theoretic best-response layer.
Deep Learning Transformers Game Theory

Blog

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2026 Work in progress