cocycle
n. [数] 余圈;[数] 闭上链
例句
Subsequently, we character and study the 2-cocycles on a subalgebra of the algebra M3 (c) and obtain the necessary and sufficient conditions that a bilinear mapping is a 2-cocycle on this algebra.
接着对矩阵代数m_3 (C)的子代数上的2 -上循环进行了等价刻画,得到了其上的双线性映射是2 -上循环的充要条件。