BETTI NUMBERS FOR CERTAIN COHEN-MACAULAY TANGENT CONES


ŞAHİN M. , Sahin N.

BULLETIN OF THE AUSTRALIAN MATHEMATICAL SOCIETY, cilt.99, sa.1, ss.68-77, 2019 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 99 Konu: 1
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1017/s0004972718000898
  • Dergi Adı: BULLETIN OF THE AUSTRALIAN MATHEMATICAL SOCIETY
  • Sayfa Sayıları: ss.68-77

Özet

We compute Betti numbers for a Cohen-Macaulay tangent cone of a monomial curve in the affine 4-space corresponding to a pseudo-symmetric numerical semigroup. As a byproduct, we also show that for these semigroups, being of homogeneous type and homogeneous are equivalent properties.