The arithmetical rank of the edge ideals of cactus graphs
نویسندگان
چکیده
منابع مشابه
On the arithmetical rank of the edge ideals of forests
We show that for the edge ideals of a certain class of forests, the arithmetical rank equals the projective dimension.
متن کاملArithmetical Rank of Toric Ideals Associated to Graphs
Let IG ⊂ K[x1, . . . , xm] be the toric ideal associated to a finite graph G. In this paper we study the binomial arithmetical rank and the Ghomogeneous arithmetical rank of IG in 2 cases: (1) G is bipartite, (2) IG is generated by quadratic binomials. In both cases we prove that the binomial arithmetical rank and the G-arithmetical rank coincide with the minimal number of generators of IG.
متن کاملSpecializations of Multigradings and the Arithmetical Rank of Lattice Ideals
In this article we study specializations of multigradings and apply them to the problem of the computation of the arithmetical rank of a lattice ideal ILG ⊂ K[x1, . . . , xn]. The arithmetical rank of ILG equals the F-homogeneous arithmetical rank of ILG , for an appropriate specialization F of G. To the lattice ideal ILG and every specialization F of G we associate a simplicial complex. We pro...
متن کاملOn the arithmetical rank of an intersection of ideals
We determine sets of elements which, under certain conditions, generate an intersection of ideals up to radical.
متن کاملthe effect of taftan pozzolan on the compressive strength of concrete in the environmental conditions of oman sea (chabahar port)
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
ذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Communications in Algebra
سال: 2017
ISSN: 0092-7872,1532-4125
DOI: 10.1080/00927872.2017.1310873