报告时间：2022年12月13日（星期二）16:00-18:00

报告地点：腾讯会议：202-145-762

报 告 人：Dragan Rakic 教授

工作单位：University of Nis

举办单位：数学学院

报告人简介：Dragan Rakic，塞尔维亚尼什大学教授，2015年博士毕业于尼什大学，主要研究方向为泛函分析、算子理论、广义逆及偏序理论。在专业杂志上等杂志上发表高质量论文20余篇，并主持塞尔维亚科学基金项目2项、及塞尔维亚与思罗维尼亚双边项目1项。

报告简介： The paper starts by collecting some elementary facts about complemented subspaces in normed spaces and orthogonal decompositions in inner product spaces. Then some canonical relations between direct sums of normed spaces and decompositions of the identity in the space of its bounded operators are presented; a similar interplay is considered in the case of unitary spaces. Finally, some direct consequences of such decompositions for some operators in a matrix form are deduced.