任意闭合曲线上的点与该点法线到某定点距离的乘积，其代数和为零。
The algebraic sum of the product of any point on a closed curve and the distance from this point's normal line to a fix point is zero.
通过指数算符的分解，给出了SU（1，1）李代数玻色指数算符的正规和反正规乘积。
By using decomposition of exponential operators, the normal and antinormal ordering product of Boson exponential operators for SU(1,1) Lie algebra are given.
本文研究了某些用无穷乘积定义的函数在代数点和超越点上的值的代数无关性。
In the present note the algebraic independence of values of certain functions denned by infinite products at algebraic and transcendental points is given.
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