Salii Viacheslav Nikolaevich Russia Saratov State University 1, Saratov State University, Russia, 410012, Saratov, Astrahanskaya st., 83 ProfessorCandidate of physico-mathematical sciencessaliiVN@info.sgu.ru Author's articles The ordered set of connected parts of a polygonal graph The Sperner Property for Polygonal Graphs Considered as Partially Ordered Sets