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Dynamical systems on chain complexes and canonical minimal resolutions
TLDR
In this article, the authors introduce notions of vector field and its discrete time flow on a chain complex, and construct a minimal free resolution for every toric ring and every monomial ideal.Abstract:
We introduce notions of vector field and its (discrete time) flow on a chain complex. The resulting dynamical systems theory provides a set of tools with a broad range of applicability that allow, among others, to replace in a canonical way a chain complex with a "smaller" one of the same homotopy type. As applications we construct in an explicit, canonical, and symmetry-preserving fashion a minimal free resolution for every toric ring and every monomial ideal. Our constructions work in all characteristics and over any base field. A key subtle new point is that in certain finitely many positive characteristics (which depend on the object that is being resolved) a transcendental extension of the base field is produced before a resolution is obtained, while in all other characteristics the base field is kept unchanged. In the monomial case we show that such a transcendental base field extension cannot in general be avoided, and we conjecture that the same holds in the toric case.read more
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Journal Article
Minimal Resolutions of Monomial Ideals
TL;DR: In this paper, an explicit combinatorial minimal free resolution of an arbitrary monomial ideal $I$ in a polynomial ring in $n$ variables over a field of characteristic $0$ is defined canonically, without any choices, using higher-dimensional generalizations of combined spanning trees for cycles and cocycles ("hedges") in the upper Koszul simplicial complexes of $I $ at lattice points in $\mathbb{Z}^n".
Simplicial Resolutions of Powers of Square-free Monomial Ideals
Susan Margaret Cooper,Sabine El Khoury,Sara Faridi,Sarah Mayes-Tang,Susan Morey,Liana M. Şega,Sandra Marie Spiroff +6 more
TL;DR: In this article , the Betti number of powers of any square-free monomial ideal with generators is shown to be bounded by Betti numbers of extremal ideals, which is a special case of the Taylor resolution.
Minimal resolutions of lattice ideals
TL;DR: In this article , a canonical minimal free resolution of an arbitrary co-artinian lattice ideal over the polynomial ring is constructed over any field whose characteristic is 0 or any but finitely many positive primes.
References
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Journal ArticleDOI
A Generalized inverse for matrices
TL;DR: A generalization of the inverse of a non-singular matrix is described in this paper as the unique solution of a certain set of equations, which is used here for solving linear matrix equations, and for finding an expression for the principal idempotent elements of a matrix.
Book
Introduction to Toric Varieties.
TL;DR: In this article, a mini-course is presented to develop the foundations of the study of toric varieties, with examples, and describe some of these relations and applications, concluding with Stanley's theorem characterizing the number of simplicies in each dimension in a convex simplicial polytope.
Book
Introduction to Homological Algebra
TL;DR: The landscape of homological algebra has evolved over the last half-century into a fundamental tool for the working mathematician as discussed by the authors, which is suitable for second or third year graduate students.
Book
An introduction to homological algebra
TL;DR: In this paper, the authors propose a theory of homology and cohomology theories of groups and moniods, and derive derived functors from homology functors, including Tensor products, groups of homomorphisms, and projective and injective modules.
MonographDOI
Isolated Invariant Sets and the Morse Index
TL;DR: On stable properties of the solution set of an ordinary differential equation, see as mentioned in this paper and the Morse index continuuation bibliography for a complete survey of the literature on flow stability and flow properties.
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