第一部分简单介绍了本文所涉及到的一些基本定理、符号、概念，以及一些与正线性算子有关的成果。

In the first part, some fundamental theorem, symbol, concept are introduced, including some valuable results on linear positive operators.

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第一部分简单介绍了本文所涉及到的一些基本定理、符号、概念，以及一些与正线性算子有关的成果。

In the first part, some fundamental theorem, symbol, concept are introduced, including some valuable results on linear positive operators.

youdao