Se p 20 02 CONSTRUCTIVE CHARACTERIZATION OF THE REDUCTION NUMBERS
نویسنده
چکیده
We present a constructive description of minimal reductions with a given reduction number. This description has interesting consequences on the minimal reduction number, the big reduction number, and the core of an ideal. In particular, it helps solve a conjecture of Vasconcelos on the relationship between reduction numbers and initial ideals.
منابع مشابه
A particular matrix and its relationship with Fibonacci numbers
X iv :m at h/ 02 09 24 9v 1 [ m at h. R A ] 1 9 Se p 20 02 A particular matrix and its relationship with Fibonacci numbers Mario Catalani Department of Economics Via Po 53, 10124 Torino, Italy e-mail [email protected] Abstract Determinants and symmetric functions of the eigenvalues of matrices characterizing stochastic processes with indepedent increments. Relationships with Fibonacci num...
متن کاملConstructive characterizations for packing and covering with trees
We give a constructive characterization of undirected graphs which contain k spanning trees after adding any new edge. This is a generalization of a theorem of Henneberg and Laman who gave the characterization for k = 2. We also give a constructive characterization of graphs which have k edgedisjoint spanning trees after deleting any edge of them.
متن کاملGreen synthesis of Se nanoparticles and its effect on salt tolerance of barley plants
In this study, selenite ions were reduced to selenium nanoparticles using a leaf extract of barley (Hordeum vulgare L.) plants. Characterization of synthesized nanoparticles using Scanning Electron Microscopy (SEM) and UV-visible spectrophotometry indicated the formation of variable size of selenium nanoparticles, suggesting that leaf extract could form polydispersed nanoparti...
متن کامل/ 02 01 07 6 v 1 1 3 Ja n 20 02 INRNE - TH - 02 - 01 Positive Energy Unitary Irreducible Representations of D = 6 Conformal
We give a constructive classification of the positive energy (lowest weight) unitary irreducible representations of the D = 6 superconformal algebras osp(8 * /2N). Our results confirm all but one of the conjectures of Minwalla on this classification. Our main tool is the explicit construction of the norms of the states that has to be checked for positivity. We give also the reduction of the fou...
متن کاملFabrication and Structural Characterization of Se-Ge Chalcogenide Glasses by Means of Melt Quenching Technique
The structural and optical characterization of Se-Ge alloys during melt quenching technique was the goal of this study. In this regards, five different samples of Se100-xGex (x= 10, 20, 30, 40, 50) were prepared by conventional melt quenching in quartz ampoule. The produced samples were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), differential scanning calori...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2002