𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Computing minimal finite free resolutions

✍ Scribed by A. Capani; G. De Dominicis; G. Niesi; L. Robbiano


Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
904 KB
Volume
117-118
Category
Article
ISSN
0022-4049

No coin nor oath required. For personal study only.

✦ Synopsis


In this paper we address the basic problem of computing minimal finite free resolutions of homogeneous submodules of graded free modules over polynomial rings. We develop a strategy, which keeps the resolution minimal at every step. Among the relevant benefits is a marked saving of time, as the first reported experiments in G&i14 show. The algorithm has been optimized using a variety of techniques, such as minimizing the number of critical pairs and employing an "ad hoc" Hilbert-driven strategy. The algorithm can also take advantage of various a priori pieces of information, such as the knowledge of the Castelnuovo regularity. @ 1997 Elsevier Science B.V.


πŸ“œ SIMILAR VOLUMES


Strategies for Computing Minimal Free Re
✍ R. La Scala; M. Stillman πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 English βš– 503 KB

In the present paper we study algorithms based on the theory of GrΓΆbner bases for computing free resolutions of modules over polynomial rings. We propose a technique which consists in the application of special selection strategies to the Schreyer algorithm. The resulting algorithm is efficient and,

Multigraded Betti numbers without comput
✍ Eduardo SΓ‘enz-de-CabezΓ³n πŸ“‚ Article πŸ“… 2009 πŸ› Springer 🌐 English βš– 216 KB

We use Mayer-Vietoris trees to obtain the multigraded Betti numbers of monomial ideals without computing their minimal free resolutions. This method provides not only a competitive algorithm for such computations but also a new tool for the analysis of the homological structure of monomial ideals. U

Constructive finite free resolutions
✍ Thierry Coquand; Claude QuittΓ© πŸ“‚ Article πŸ“… 2011 πŸ› Springer 🌐 English βš– 202 KB
Minimal Free Resolutions of HomogenizedD
✍ Toshinori Oaku; Nobuki Takayama πŸ“‚ Article πŸ“… 2001 πŸ› Elsevier Science 🌐 English βš– 330 KB

Homogenizing a module over the ring of differential operators, we define the notion of a minimal free resolution that is adapted to a filtration. We show that one can apply a modification of the algorithm of La Scala and Stillman to compute such a free resolution. By dehomogenization, one gets a fre