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Gluing and Hilbert functions of monomial curves

Author(s): Feza Arslan; Pinar Mete; Mesut Sahin
Journal: Proc. Amer. Math. Soc. 137 (2009), 2225-2232.
MSC (2000): Primary 13H10, 14H20; Secondary 13P10
Posted: December 31, 2008
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Abstract: In this article, by using the technique of gluing semigroups, we give infinitely many families of 1-dimensional local rings with non-decreasing Hilbert functions. More significantly, these are local rings whose associated graded rings are not necessarily Cohen-Macaulay. In this sense, we give an effective technique for constructing large families of 1-dimensional Gorenstein local rings associated to monomial curves, which support Rossi's conjecture saying that every Gorenstein local ring has a non-decreasing Hilbert function.


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Additional Information:

Feza Arslan
Affiliation: Department of Mathematics, Middle East Technical University, Ankara, 06531, Turkey
Email: sarslan@metu.edu.tr

Pinar Mete
Affiliation: Department of Mathematics, Balikesir University, Balikesir, 10145, Turkey
Email: pinarm@balikesir.edu.tr

Mesut Sahin
Affiliation: Department of Mathematics, Atilim University, Ankara, 06836, Turkey
Email: mesutsahin@gmail.com

DOI: 10.1090/S0002-9939-08-09785-2
PII: S 0002-9939(08)09785-2
Keywords: Hilbert function of local ring, tangent cone, monomial curve, numerical semigroup, semigroup gluing, nice gluing, Rossi's conjecture
Received by editor(s): July 17, 2008,
Received by editor(s) in revised form: September 19, 2008
Posted: December 31, 2008
Communicated by: Bernd Ulrich
Copyright of article: Copyright 2008, American Mathematical Society
The copyright for this article reverts to public domain after 28 years from publication.


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