2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/58105We discuss and construct an action functional (logarithmic action) for the simply connected Laplacian growth and obtain its variation. This variation admits various interpretations. In particular, we consider a general smooth subordination evolution and give connections with the Virasoro algebra and Neretin polynomials.22 pagesMathematical Physics76D27; 81T40text