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Nearly extremal Cohen–Macaulay and Gorenstein algebras

Published online by Cambridge University Press:  17 April 2009

Chanchal Kumar
Affiliation:
Department of Mathematics, University of Jammu, Jammu 180 006, India, e-mail: chanchal_jammu@yahoo.com, pavinder_ju@yahoo.co.in, ashokk_ju2002@yahoo.co.in
Pavinder Singh
Affiliation:
Department of Mathematics, University of Jammu, Jammu 180 006, India, e-mail: chanchal_jammu@yahoo.com, pavinder_ju@yahoo.co.in, ashokk_ju2002@yahoo.co.in
Ashok Kumar
Affiliation:
Department of Mathematics, University of Jammu, Jammu 180 006, India, e-mail: chanchal_jammu@yahoo.com, pavinder_ju@yahoo.co.in, ashokk_ju2002@yahoo.co.in
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This paper study nearly extremal Cohen–Macaulay and Gorenstein algebras and characterise them in terms of their minimal free resolutions. Explicit bounds on their graded Betti numbers and their multiplicities are obtained.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 2007

References

[1]Eagon, J.A. and Reiner, V., ‘Resolutions of Stanley-Reisner rings and Alexander duality’, J. Pure Appl. Algebra 130 (1998), 265275.CrossRefGoogle Scholar
[2]Herzog, J. and Kühl, M., ‘On the Betti numbers of a finite pure and linear resolutions’, Comm. Algebra 12 (1984), 16271646.Google Scholar
[3]Herzog, J. and Hibi, T., ‘Componentwise linear ideals’, Nagoya Math. J. 153 (1999), 141153.Google Scholar
[4]Huneke, C. and Miller, M., ‘A note on the multiplicity of Cohen–Macaulay algebras with pure resolutions’, Canad. J. Math. 37 (1985), 11491162.CrossRefGoogle Scholar
[5]Römer, T., ‘Bounds for Betti numbers’, J. Algebra 249 (2002), 2037.Google Scholar
[6]Sally, J., ‘Cohen–Macaulay rings of maximal embedding dimension’, J. Algebra 56 (1979), 168183.CrossRefGoogle Scholar
[7]Schenzel, P., ‘Uber die freein auflösungen extremaler Cohen–Macaulay-ringe’, J. Algebra 64 (1980), 93101.CrossRefGoogle Scholar
[8]Stanley, R.P., ‘The number of faces of a simplicial convex polytopes’, Adv. in Math. 35 (1980), 236238.Google Scholar
[9]Villarreal, R.H., Monomial algebras (Marcel Dekker Inc., New York, 2001).Google Scholar