2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/224797The paper presents an evolutionary game-theoretic approach to open access publishing as an asymmetric game between scientists and publishers. We show how the ordinary differential equations of the model presented can be written as a system of Hamiltonian partial differential equations. The understanding of the setting as a Hamiltonian system implies some properties reflecting the qualitative behavior of the system.16 pages, 2 figuresOptimization and ControlSymplectic Geometry91A22, 91A80, 70H05, 53D99text