空值环境下NMVD公理系统存在性的进一步研究

Further Research on Existence of NMVD Axiom System Under Null Value Circumstances

由于空值的出现，使ＮＭＶＤ／公理系统的存在性更趋于复杂。本文分别讨论了在单一的强、弱保持条件下和强、弱保持的复合条件下公理存在的条件，并进行了相应的证明。

The existence of NMVD axiom system under null value circumstances tends to become more complex because null value appears.In this paper,the existent conditions .f the axiom under the single strong an,weak holding conditions and the strong and weak holding composite conditions are discussed,and the relevant proofs are given.