为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

Using the quiver technique we construct a class of non-graded bi-Frobenius algebras. We also classify a class of graded ......

The goal of this paper is to investigate whether the Ext-groups of all pairs (M, N) of modules over Nakayama algebras of......

The goal of this paper is to investigate whether the Ext-groups of all pairs (M, N) of modules over Nakayama algebras of......