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math.CO2013
Semiarcs with long secants
Bence Csajbók
In a projective plane of order , a non-empty point set is a -semiarc if the number of tangent lines to at each of its points is . If ${\cal…
math.CO2013
Semiarcs with a long secant in
Bence Csajbók, Tamás Héger, György Kiss
A -semiarc is a pointset with the property that the number of tangent lines to at each of its points is . We show that if a small -semiarc ${\cal…