Ext群H0v2{-1}BP*[t1]/(4,v1∞)),王向军,赵东旭,令$T(1)$为Ravenel谱,$T(1)/(4)$为$4:T(1)longrightarrow T(1)$的上纤维,$L_2$为对于$v_2^{-1}BP$的局部化函子。为利用Adams-Novikov谱序列计算$L_2T(1)/(4)$的同�