Weierstrass semigroups whose minimum positive integers are even

• Autores: Jiryo Komeda
• Localización: Archiv der Mathematik, ISSN 0003-889X, Vol. 89, Nº. 1, 2007, págs. 52-59
• Idioma: inglés
• DOI: 10.1007/s00013-007-2058-x
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• Resumen

  • We consider three subsets of the set of 2n-semigroups, where for a positive integer n a 2n-semigroup means a numerical semigroup whose minimum positive integer is 2n. These three subsets are obtained by the Weierstrass semigroups of total ramification points on a cyclic covering of the projective line, the Weierstrass semigroups of ramification points on a double covering of a non-singular curve and the Weierstrass semigroups of points on a non-singular curve.