Geometric constructions of small regular graphs with girth 7Kiss, György (Avtor) cage problemincidence graphgeneralized quadrangleWe present simple, geometric constructions for small regular graphs of girth 7 from the incidence graphs of some generalized quadrangles. We obtain infinite families of (q − 1)-regular, q-regular and (q + 1)-regular graphs of girth 7, for q a prime power. Some of them have the smallest order known so far.Založba Univerze na Primorskem20252025-11-03 12:33:43Članek v reviji22077sl