2-semiarcs in PG(2, q), q <= 13

A 2-semiarc is a pointset S-2 with the property that the number of tangent lines to S-2 at each of its points is two. Using some theoretical results and computer aided search, the complete classification of 2-semiarcs in PG(2, q) is given for q [= 7, the spectrum of their sizes is determined for q [...

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Format: journal article
Published: 2014
Online Access:http://hdl.handle.net/10831/48728
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