Abstract:Arguably, the most important open problem in the theory of q-analogs of designs is the question for the existence of a q-analog D of the Fano plane. It is undecided for every single prime power value q ≥ 2.A point P is called an α-point of D if the derived design of D in P is a geometric spread. In 1996, Simon Thomas has shown that there must always exist at least one non-α-point. For the binary case q = 2, Olof Heden and Papa Sissokho have improved this result in 2016 by showing that the non-α-points must for… Show more
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