摘要
引入了Gorenstein FI-内射模,它是介于内射模和Gorenstein内射模之间的一种特殊模类.讨论了Gorenstein FI-内射模的诸多性质,给出了Gorenstein FI-内射模是内射模的一个充分条件,并用Gorenstein FI-内射模刻画了半遗传环.最后,定义了Gorenstein FI-内射维数,给出了Gorenstein FI-内射(预)包存在的一个充分条件.
The concept of Gorenstein FI-injective modules is introduced,which is a particular class between injective and Gorenstein injective modules.Some properties of Gorenstein FI-injective modules are discussed,a sufficient condition for Gorenstein FI-injective module to be injective is given,and semi-hereditary rings are characterized in terms of Gorenstein FI-injective modules.Finally,Gorenstein FI-injective dimension is defined,and a sufficient condition for the existence of Gorenstein FI-injective(pre)envelope is given.
引文
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