1 Suchodolska Str., B 13 Vh 2 Ap 32, 1373 Sofia, Bulgaria
Abstract:
For any a -dimensional polyhedron is constructed such that the Yang index of its deleted product equals . This answers a question of Izydorek and Jaworowski (1995). For any a -dimensional closed manifold with involution is constructed such that , but can be mapped into a -dimensional polyhedron without antipodal coincidence.