关于DMRL序及其相关序的若干性质

摘要

It is proved that the DMRL ordering is maintained under the translation and scale transforms. A sufficient and necessary condition for DMRL ordering is presented. The relationships between the DMRL ordering and the IFR ordering or IFRA ordering are investigated as well.%证明了DMRL偏序关系在平移和尺度变换下的不变性,并获得了一个充分必要条件.同时考虑了DMRL序与IFR及IFRA序之间的关系.