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SUMMARY:Hadi Kharaghani and Sho Suda (University of Lethbridge and Nationa
 l Defense Academy of Japan)
DTSTART:20210804T143000Z
DTEND:20210804T153000Z
DTSTAMP:20260416T230044Z
UID:CCM2021/3
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/CCM2021/3/">
 Balanced Generalized Weighing matrices and Association Schemes</a>\nby Had
 i Kharaghani and Sho Suda (University of Lethbridge and National Defense A
 cademy of Japan) as part of Carleton Combinatorics Meeting 2021\n\n\nAbstr
 act\nA symmetric Balanced Incomplete Design\, $\\mathrm{BIBD}(v\, k\, \\la
 mbda)$\, is signable if it is possible\nto turn its incidence matrix\, by 
 negating some of the entries\, into a matrix with a specific orthogonality
  property.\n\nSigned symmetric designs possess interesting properties and 
 lead to a variety of association schemes. In addition\, the process is rev
 ersible\, and signed symmetric designs are constructible from association 
 schemes.\n
LOCATION:https://researchseminars.org/talk/CCM2021/3/
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