摘要
本文提出了在取大，取小算子下的行列式问题，给出了若干性质和定理，其中这个定理指出了矩阵乘积的行列式不等相应的行列式的乘积。这是个区别于高等代数的结果。
This paper raised the problem of determinant under ∨ and ∧, It proved several corollaries and a theorem. And the theorem point out that determinant of matric. This result is different from high algebra.
