Jeremy M. Dover
Published 2023-05-08Version 1
A blocking semioval is a set of points in a projective plane that is both a blocking set (i.e., every line meets the set, but the set contains no line) and a semioval (i.e., there is a unique tangent line at each point). The smallest size of a blocking semioval is known for all finite projective planes of order less than 11; we investigate the situation in PG(2,11).
Comments: 13 pages, 1 figure
On the number of $k$-gons in finite projective planes
Planar functions over fields of characteristic two
Non-representability of finite projective planes by convex sets
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