Wolfson and Xu Yonghua both discussed the abstract characterizations of full linear transformation rings and obtained two necessary and sufficient conditions for an abstract ring to be isomorphic to a full linear tran...Wolfson and Xu Yonghua both discussed the abstract characterizations of full linear transformation rings and obtained two necessary and sufficient conditions for an abstract ring to be isomorphic to a full linear transformation ring respec-tively in different ways. Based on their works, this paper continues the展开更多
1.Two approaches to studying intelligence and cognition It is widely accepted that there are two main approaches to studying“intelligence”and“cognition”,psychometric intelligence research and Piagetian...1.Two approaches to studying intelligence and cognition It is widely accepted that there are two main approaches to studying“intelligence”and“cognition”,psychometric intelligence research and Piagetian developmental psychology.While the psychometric approach measures intelligence without having a true theory of intelligence,ascribing different scores to test persons according to their respective mastering of tests,thus measuring abilities regarding abstractive and logical capabilities,the Piagetian approach comprises a complete theory of human development,a comprehensive theory of stage developments from infancy over adolescence to adulthood,including a detailed description of the development of psyche,consciousness,personality.展开更多
Ⅰ. INTRODUCTION Let A be a bounded linear operator on a separable infinitely-dimensional complex Hilbert space (?), denoted by A ∈(?)((?)), and lat A denote the lattice of all invariant subspaces of A. An operator A...Ⅰ. INTRODUCTION Let A be a bounded linear operator on a separable infinitely-dimensional complex Hilbert space (?), denoted by A ∈(?)((?)), and lat A denote the lattice of all invariant subspaces of A. An operator A is unicellular if lat A is totally ordered展开更多
文摘Wolfson and Xu Yonghua both discussed the abstract characterizations of full linear transformation rings and obtained two necessary and sufficient conditions for an abstract ring to be isomorphic to a full linear transformation ring respec-tively in different ways. Based on their works, this paper continues the
文摘1.Two approaches to studying intelligence and cognition It is widely accepted that there are two main approaches to studying“intelligence”and“cognition”,psychometric intelligence research and Piagetian developmental psychology.While the psychometric approach measures intelligence without having a true theory of intelligence,ascribing different scores to test persons according to their respective mastering of tests,thus measuring abilities regarding abstractive and logical capabilities,the Piagetian approach comprises a complete theory of human development,a comprehensive theory of stage developments from infancy over adolescence to adulthood,including a detailed description of the development of psyche,consciousness,personality.
文摘Ⅰ. INTRODUCTION Let A be a bounded linear operator on a separable infinitely-dimensional complex Hilbert space (?), denoted by A ∈(?)((?)), and lat A denote the lattice of all invariant subspaces of A. An operator A is unicellular if lat A is totally ordered
