平凡群
平凡群-
最简单的非平凡群是一些二阶的群。
The simplest non-trivial groups are those of order 2 .
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投射平凡群环上的模扩张
Extensions of modules over projective trivial group rings
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关于完全π-正则J-平凡半群的构造
On the Structure of Completely π - regular J-trivial Semigroups
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关于周期J-平凡半群的构造
On the Structure of Periodic J-trivial Semigroups
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有限R-平凡P-半群的分类
On the Classification of Finite R - trivial P-semigroups
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仅含n个非平凡正规子群的群的特征
Character of group which only have n nontrivial normal subgroups
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一般来说，这些C~-代数不一定是单的，也不一定是纯无限的，但它包含了所有的AF-代数，及所有满足UCT且有平凡的K1群的Kirchberg代数。
They are , in general , neither finite nor purely infinite . However , the class includes all AF-algebras . and all Kirchberg algebras with UCT and trivial K1-group .