Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 차송이 | - |
dc.creator | 차송이 | - |
dc.date.accessioned | 2016-08-25T04:08:39Z | - |
dc.date.available | 2016-08-25T04:08:39Z | - |
dc.date.issued | 1997 | - |
dc.identifier.other | OAK-000000023394 | - |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/180742 | - |
dc.identifier.uri | http://dcollection.ewha.ac.kr/jsp/common/DcLoOrgPer.jsp?sItemId=000000023394 | - |
dc.description.abstract | 작용소 T^(2) 이 hyponormal 작용소일 때 T를 hyponormal 작용소의 square root 라고 정의하자. 본 논문에서는 이렇게 정의된 작용소에 대해 공부하고 다음과 같은 사실들을 증명한다. S 와 T 가 hyponormal 작용소의 square root 라고하자. 1. 0 ∈ π_(00)(T^(2)) 일때 T 는 Weyl 작용소가 된다. 2. ST=TS 일때 ST가 Weyl 작용소일 필요 충분조건은 S 와 T 가 동시에 Weyl 작용소 일 때이다. 3. σ(T)∩[-σ(T)]=Ø 일때 T 는 isoloid가 된다.;In this thesis we introduce and study a new class of operators called the square roots of hyponormal operators if T^(2) is hyponormal. Following results have been proved : Let T and S in L(H) be square roots of hyponormal operators, and T^(2) and S^(2), respectively. 1. If 0 ∈ π_(∞)(T^(2)), then T is a Weyl operator. 2. If ST= TS , then ST is Weyl if and only if both S and T are Weyl. 3. If σ(T) ∩ [ -σ(T)] = Φ, then T is isoloid. | - |
dc.description.tableofcontents | CONTENTS Ⅰ. Introduction = 1 Ⅱ. Preliminaries = 3 Ⅲ. Properties of a square root of a hyponormal operator = 5 Ⅳ. Classes of Weyl operators = 11 Ⅴ. Application of Stampfli's Theorem = 18 References = 21 논문초록 = 23 | - |
dc.format | application/pdf | - |
dc.format.extent | 586197 bytes | - |
dc.language | eng | - |
dc.publisher | The Graduate School, Ewha Womans University | - |
dc.subject | hyponormal | - |
dc.subject | operator | - |
dc.subject | root | - |
dc.subject | Mathematics | - |
dc.title | On roots of a hyponormal operator | - |
dc.type | Master's Thesis | - |
dc.format.page | 23 p. | - |
dc.identifier.thesisdegree | Master | - |
dc.identifier.major | 대학원 수학과 | - |
dc.date.awarded | 1998. 2 | - |