摘要
Let S（R^2） be the class of all infinitely differential functions which, as well as their derivatives, are rapidly decreasing on R^2. Here we define a kind of seminorms which is equivalent to the usual family of semi-norms on the Schwartz space S（R^2）.
Let S（R^2） be the class of all infinitely differential functions which, as well as their derivatives, are rapidly decreasing on R^2. Here we define a kind of seminorms which is equivalent to the usual family of semi-norms on the Schwartz space S（R^2）.
基金
supported by National Natural Science Foundation(NNSF)of China(11761030)
Hubei Provincial Department of Education Science and Technology Research Project(B2015099)
the Doctoral Science Foundation of Hubei University for Nationalities(4148009)
