deddens meaning in English

德登斯

I also introduce how the author came up with the thoughts of the thesis and the main results . in the second part , i discussed some properties regarding the reflexivity of cyclic subalgebras on a normed vector space . the 2 - refiexivity and hyporeflexivity of cyclic subalgebras are attained , and the answers to deddens ' s questions in reference document [ 19 ] are obtained partly
第1章介绍了自反代数的发展概述及问题的提出，以及本论文的主要内容；第2章讨论了循环算子代数的2 -自反性和亚自反性以及其它一些与自反性相关的性质，并且部分地回答了deddens的问题：第3章推广( alanlambert的)定理1