设Λ=(A M 0 B)是三角矩阵环,其中A,B是环,M是A-B双模.本文引入了Φ(X,Y)模类,其中X,Y分别是包含投射A-模和投射B-模的类,并给出了三角矩阵环上Φ(X,Y)-Gorenstein投射模的刻画,由此推广和统一了三角矩阵环上Gorenstein投射模和Ding投...设Λ=(A M 0 B)是三角矩阵环,其中A,B是环,M是A-B双模.本文引入了Φ(X,Y)模类,其中X,Y分别是包含投射A-模和投射B-模的类,并给出了三角矩阵环上Φ(X,Y)-Gorenstein投射模的刻画,由此推广和统一了三角矩阵环上Gorenstein投射模和Ding投射模的一些结果.展开更多
A modified eikonal approximation is developed by introducing an eikonal phase factor into the previous model-potential Oppenheimer-Brinkman-Kramers(MPOBK)approximation.The present calculation shows an obvious improvem...A modified eikonal approximation is developed by introducing an eikonal phase factor into the previous model-potential Oppenheimer-Brinkman-Kramers(MPOBK)approximation.The present calculation shows an obvious improvement on the MPOBK calculation for H^(+)-Ne collisions at intermediate energies.展开更多
基金Supported by the National Natral Science Foundation of China。
文摘A modified eikonal approximation is developed by introducing an eikonal phase factor into the previous model-potential Oppenheimer-Brinkman-Kramers(MPOBK)approximation.The present calculation shows an obvious improvement on the MPOBK calculation for H^(+)-Ne collisions at intermediate energies.