Finite topologies and digraphs
Author
Marijuán López, Carlos
Full text
https://www.revistaproyecciones.cl/index.php/proyecciones/article/view/119910.4067/S0716-09172010000300008
Abstract
In this paper we study the relation between finite topologies and digraphs. We associate a digraph to a topology by means of the “specialization” relation between points in the topology. Reciprocally, we associate a topology to each digraph, taking the sets of vertices adjacent (in the digraph) to v, for all vertex v, as a subbasis of closed sets for the topology. We use these associations to examine the relation between a simple digraph and its homologous topology. We also extend this relation to the functions preserving the structure between these classes of objects.