{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,11]],"date-time":"2026-03-11T12:04:52Z","timestamp":1773230692750,"version":"3.50.1"},"reference-count":0,"publisher":"The Electronic Journal of Combinatorics","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Electron. J. Combin."],"abstract":"<jats:p>A construction is given of ${{2}\\over {9}} (d+1)^2$ equiangular lines in Euclidean $d$-space, when $d = 3 \\cdot 2^{2t-1}-1$ with $t$ any positive integer.  This compares with the well known \"absolute\" upper bound of ${{1}\\over {2}} d(d+1)$ lines in any equiangular set; it is the first known constructive lower bound of order $d^2$ .<\/jats:p>","DOI":"10.37236\/1533","type":"journal-article","created":{"date-parts":[[2020,1,11]],"date-time":"2020-01-11T02:02:31Z","timestamp":1578708151000},"source":"Crossref","is-referenced-by-count":22,"title":["Large Equiangular Sets of Lines in Euclidean Space"],"prefix":"10.37236","volume":"7","author":[{"given":"D.","family":"De Caen","sequence":"first","affiliation":[]}],"member":"23455","published-online":{"date-parts":[[2000,11,9]]},"container-title":["The Electronic Journal of Combinatorics"],"original-title":[],"link":[{"URL":"https:\/\/www.combinatorics.org\/ojs\/index.php\/eljc\/article\/download\/v7i1r55\/pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.combinatorics.org\/ojs\/index.php\/eljc\/article\/download\/v7i1r55\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,1,18]],"date-time":"2020-01-18T05:20:52Z","timestamp":1579324852000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.combinatorics.org\/ojs\/index.php\/eljc\/article\/view\/v7i1r55"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2000,11,9]]},"references-count":0,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2000,1,1]]}},"URL":"https:\/\/doi.org\/10.37236\/1533","relation":{},"ISSN":["1077-8926"],"issn-type":[{"value":"1077-8926","type":"electronic"}],"subject":[],"published":{"date-parts":[[2000,11,9]]},"article-number":"R55"}}