Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | 이윤진 | - |
dc.contributor.author | 김보란 | - |
dc.creator | 김보란 | - |
dc.date.accessioned | 2017-08-27T12:08:29Z | - |
dc.date.available | 2017-08-27T12:08:29Z | - |
dc.date.issued | 2017 | - |
dc.identifier.other | OAK-000000142370 | - |
dc.identifier.uri | http://dcollection.ewha.ac.kr/jsp/common/DcLoOrgPer.jsp?sItemId=000000142370 | en_US |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/236519 | - |
dc.description.abstract | The purpose of this thesis consists of three parts: first, we construct (extremal or optimal) free self-dual codes over finite rings Z_8 and Z_16. Second, we explicitly determine the minimum Lee weights of cyclic self-dual codes over a Galois ring of characteristic p^2 with length p^k. Lastly, we obtain a mass formula for cyclic codes of length p^k over a Galois ring of characteristic p^3 by explicitly classifying their generators.;이 학위 논문은 세부분으로 구성되어 있다. 첫 번째, 유한환인 Z_8과 Z_16 위에서 (extremal or optimal) free self-dual code를 구성한다. 두 번째, 표수를 p^2으로 갖는 Galois 환 위에서 length 를 p^k 으로 갖는 cyclic self-dual code 들의 minimum Lee weight을 명확히 결정한다. 마지막으로, 표수를 p^3으로 갖는 Galois 환 위에서 length를 p^k으로 갖는 cyclic code 들의 생성원들의 명확한 분류를 이용하여 mass formula를 찾는다. | - |
dc.description.tableofcontents | 1. Introduction 1 2. Preliminaries 5 3. Construction of self-dual codes over Z8 and Z16 14 3.1. The lifting method for extremal self-dual codes over Z8 and Z16 14 3.2. Construction algorithms 27 3.3. Implementation results 36 4. Lee weights of cyclic self-dual codes over Galois rings of characteristic p2 39 4.1. Minimum Hamming weights of cyclic self-dual codes 40 4.2. Minimum Lee weights of cyclic self-dual codes 41 4.3. Implementation results 58 5. A mass formula for cyclic codes over Galois rings of characteristic p3 65 5.1. Classification of cyclic codes over GR(p3, m) of length pk 65 5.2. A mass formula for cyclic codes over GR(p3,m) of length pk 82 Closing Remark 102 References 103 Korean Abstract 108 | - |
dc.format | application/pdf | - |
dc.format.extent | 1038159 bytes | - |
dc.language | eng | - |
dc.publisher | 이화여자대학교 대학원 | - |
dc.subject.ddc | 500 | - |
dc.title | Self-dual and cyclic codes over Galois rings | - |
dc.type | Doctoral Thesis | - |
dc.creator.othername | Boran Kim | - |
dc.format.page | iii, 108 p. | - |
dc.contributor.examiner | 김종락 | - |
dc.contributor.examiner | 박영호 | - |
dc.contributor.examiner | 이윤진 | - |
dc.contributor.examiner | 이향숙 | - |
dc.contributor.examiner | 이혜숙 | - |
dc.identifier.thesisdegree | Doctor | - |
dc.identifier.major | 대학원 수학과 | - |
dc.date.awarded | 2017. 8 | - |