Blocking-sets contenuti nell’unione di tre rette formanti fascio
Abstract
Let
be the Galois plane of order q and let
be the minimum integer such that there exists a
blocking-set of
contained in the union of three lines which pass through the same point.In this paper we prove that, if q is odd,
and we give an example of minimal blocking-set in
.
![PG(2,q)](http://siba-ese.unile.it/plugins/generic/latexRender/cache/0b78f77ae85a50f0ced942e1148f80ae.png)
![n(q)](http://siba-ese.unile.it/plugins/generic/latexRender/cache/87a726a924d60490a9cef184899bd7d6.png)
![n(q)](http://siba-ese.unile.it/plugins/generic/latexRender/cache/87a726a924d60490a9cef184899bd7d6.png)
![PG(2,q)](http://siba-ese.unile.it/plugins/generic/latexRender/cache/0b78f77ae85a50f0ced942e1148f80ae.png)
![n(q)≥ \frac{3q+5}{2}](http://siba-ese.unile.it/plugins/generic/latexRender/cache/e7af6b28d4bf716699466c44af50d1c0.png)
![PG(2,9)](http://siba-ese.unile.it/plugins/generic/latexRender/cache/432e1f9949983f7abde449cd559d7565.png)
DOI Code:
10.1285/i15900932v2n2p167
Full Text: PDF