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SUMMARY:Georgios Petridis (University of Georgia)
DTSTART:20210923T141500Z
DTEND:20210923T160000Z
DTSTAMP:20260422T065831Z
UID:CJCS/28
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/CJCS/28/">Th
 e q-analogue of almost orthogonal sets</a>\nby Georgios Petridis (Universi
 ty of Georgia) as part of Copenhagen-Jerusalem Combinatorics Seminar\n\n\n
 Abstract\nAn almost orthogonal set in $\\mathbb{R}^d$ is a collection of v
 ectors with the property that among any three distinct elements there is a
 n orthogonal pair. The maximum size of such sets was determined by Rosenfe
 ld\, who verified a belief of Erdos. The same question was studied by Ahma
 di and Mohammadian in $\\mathbb{F}_q^d$. We will present a proof of a conj
 ecture of Ahmadi and Mohammadian and also see how it implies an “almost
 ” analogue of a theorem of Berlekamp on eventowns. Joint work with Ali M
 ohammadi.\n
LOCATION:https://researchseminars.org/talk/CJCS/28/
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