目前有很多关于算子的正则性的研究成果，但是没有准确的方法来说明连续线性算子的正则性。

There are number of results concerning the regularity of operators, but it is known that there is no exact way in the literature to conclude the regularity of continuous linear operators.

youdao

目前有很多关于算子的正则性的研究成果，但是没有准确的方法来说明连续线性算子的正则性。

There are number of results concerning the regularity of operators, but it is known that there is no exact way in the literature to conclude the regularity of continuous linear operators.

youdao