4 http://hdl.handle.net/10338.dmlcz/152684 4 Sufficient conditions on the existence of factors in graphs involving minimum degree http://hdl.handle.net/10338.dmlcz/152703 Sufficient conditions on the existence of factors in graphs involving minimum degree Are zero-symmetric simple nearrings with identity equiprime? http://hdl.handle.net/10338.dmlcz/152702 Are zero-symmetric simple nearrings with identity equiprime? Linear preservers of rc-majorization on matrices http://hdl.handle.net/10338.dmlcz/152701 Linear preservers of rc-majorization on matrices Mean values related to the Dedekind zeta-function http://hdl.handle.net/10338.dmlcz/152700 Mean values related to the Dedekind zeta-function