The maximal and minimal fixed points theorems for a class of T monotone operators in abstract spaces are proved, and some well known results are improved.

证明了抽象空间中一类T 单调算子的最大、最小不动点定理，改进了已知文献的结果。

youdao

That's far more important than trying to discover one's passion in the abstract, especially when there hasn't been a spare minute to think about any of this for years.

WSJ: The Experts: How to Avoid Retirement Boredom