In this paper we study blow-up algebras of certain rational normal scrolls. As the Standard
techniques to study these kind of algebras seem to fail, we applied Sagbi basis theory …

On the Depth of the Fiber Cone of Filtrations Page 1 Ž . JOURNAL OF ALGEBRA 198, 428445
1997 ARTICLE NO. JA977147 On the Depth of the Fiber Cone of Filtrations Teresa Cortadellas …

Let (R, 𝔪) be a Noetherian local ring and let I be an R-ideal. Inspired by the work of Hübl and
Huneke, we look for conditions that guarantee the Cohen-Macaulayness of the special fiber …

For a given a local ring (A, m), we study the fiber cone of ideals in A with analytic spread
one. In this case, the fiber cone has a structure as a module over its Noether normalization …

In this paper we consider a large class of coordinate rings of certain unions of projective
scrolls. This class appears in several recent works Ž. studying properties of the special fibre …

We explicitly calculate the normal cones of all monomial primes which define the curves of
the form $(t^{L}, t^{L+ 1},\ldots, t^{L+ n}) $, where $ n\le 4$. All of these normal cones are …

We present a class of homogeneous ideals which are generated by monomials and
binomials of degree 2 and are set-theoretic complete intersections. This class includes …

Let R be a local Cohen-Macaulay ring and let I be an R-ideal. The Rees algebra [special
characters omitted], the associated graded ring [special characters omitted] and the fiber …

Neste trabalho estudamos a Cohen-Macaulicidade e a Gorensteincidade da fibra especial
de um ideal em um anel local (R, m) de Cohen-Macaulay com dimensao d. Também …

A mamoneira (Ricinus communis L.) é um arbusto perene, heliófila, que pertence à família
Euphorbiaceae. É originária provavelmente da África ou da Índia, sendo atualmente …