Symmetric Lie models of a triangle
Volume 246 / 2019
Fundamenta Mathematicae 246 (2019), 289-300
MSC: Primary 55P62; Secondary 17B01, 55U10.
DOI: 10.4064/fm518-7-2018
Published online: 15 February 2019
Abstract
R. Lawrence and D. Sullivan have constructed a Lie model for an interval from the geometrical idea of flat connections and flows of gauge transformations. Their model supports an action of the symmetric group $\varSigma _2$ reflecting the geometrical symmetry of the interval. In this work, we present a Lie model of the triangle with an action of the symmetric group $\varSigma _3$ compatible with the geometrical symmetries of the triangle. We also prove that the model of a graph consisting of a circuit with $k$ vertices admits a Maurer–Cartan element stable by the automorphisms of the graph.
