Rigid graphs of maps
Wladyslaw Kulpa · PUBLISHING HOUSE OF THE UNIVERSITY OF SILESIA (University of Silesia) · 1986
In this note we construct maps between metric separable connected spaces X and Y such that the graphs are connected, dense and rigid subspaces of the Cartesian product X×Y. From this result it follows that there is no maximal topology among metric separable connected topologies on a given set X.