运用L2空间上的线性算子理论，我们证明了这类算子存在至多可数个正的本征值。

By using linear operator theory in L2 space, we proved that the operators of this kind has not more than denumerable positive eigenvalues.

youdao

运用L2空间上的线性算子理论，我们证明了这类算子存在至多可数个正的本征值。

By using linear operator theory in L2 space, we proved that the operators of this kind has not more than denumerable positive eigenvalues.

youdao