半模的投射盖
Projective covers of semimodules
《与移民有关的投资计划守则》
Code on Immigration-linked Investment Schemes
Fourier衍射投影定理
Fourier diffraction theorem
Gorenstein投射模
Gorenstein project module
n-Copure投射模
n-copure projective modules
Nk-投射半模
Nκ-projective semimodules
VaR约束下的投资组合
portfolio with value at risk