On generators of the semigroup of a plane curve singularityстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:To a reduced plane curve singularity with $r$ branches there is associated its semigroup, a subsemigroup of $Z^r_{\ge0}$. For an irreducible curve singularity, the description of its semigroup in terms of its set of generators is well known. For a reducible curve there exists a combinatorial description of the semigroup. The semigroup of a plane curve singularity with several branches is described in terms of the minimal set of generators constructed in a natural geometric way.