A new relative bound for equiangular lines and nonexistence of tight spherical designs of harmonic index <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si13.gif" display="inline" overflow="scroll"><mml:mn>4</mml:mn></mml:math>
書誌事項
- 公開日
- 2016-04
- 資源種別
- journal article
- 権利情報
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- https://www.elsevier.com/tdm/userlicense/1.0/
- https://www.elsevier.com/legal/tdmrep-license
- http://www.elsevier.com/open-access/userlicense/1.0/
- DOI
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- 10.1016/j.ejc.2015.11.003
- 公開者
- Elsevier BV
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説明
We give a new upper bound for the cardinality of a set of equiangular lines in R n with a fixed common angle ? for each ( n , ? ) satisfying certain conditions. Our techniques are based on semidefinite programming methods for spherical codes introduced by Bachoc and Vallentin (2008). As a corollary to our bound, we show the nonexistence of spherical tight designs of harmonic index 4 on a sphere in R n with n ? 3 .
収録刊行物
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- European Journal of Combinatorics
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European Journal of Combinatorics 53 96-103, 2016-04
Elsevier BV
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詳細情報 詳細情報について
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- CRID
- 1360004232111106816
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- ISSN
- 01956698
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- 資料種別
- journal article
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- データソース種別
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