1. New proof of a characterization of geodetic graphs Creator: Nebeský, Ladislav Format: bez média and svazek Type: model:article and TEXT Subject: geodetic graphs, shortest paths, and binary operations Language: English Description: In [3], the present author used a binary operation as a tool for characterizing geodetic graphs. In this paper a new proof of the main result of the paper cited above is presented. The new proof is shorter and simpler. Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public