نتایج جستجو برای: graver bases

تعداد نتایج: 67201  

Journal: :Acta Arithmetica 1989

Journal: :Transactions of the American Mathematical Society 2000

Journal: :bulletin of the iranian mathematical society 0
amir hashemi isfahan university of technology mahdi dehghani darmian isfahan university of technology benyamin m.-alizadeh isfahan university of technology

the concept of comprehensive grobner bases was introduced by weispfenning. montes has proposed an efficient algorithm for computing these bases. but he has not explicitly used buchberger's criteria in his algorithm. in this paper we prove that we can apply these criteria on montes algorithm. we propose a modified version of montes algorithm and evaluate its performance via some examples.

Journal: :journal of linear and topological algebra (jlta) 0
f aboutorabi goudarzi department of mathematics, faculty of science, central tehran branch, islamic azad university, tehran, iran. m. s asgari department of mathematics, faculty of science, central tehran branch, islamic azad university, tehran, iran.

in this paper we investigate a new notion of bases in hilbert spaces and similarto fusion frame theory we introduce fusion bases theory in hilbert spaces. we also introducea new de nition of fusion dual sequence associated with a fusion basis and show that theoperators of a fusion dual sequence are continuous projections. next we de ne the fusionbiorthogonal sequence, bessel fusion basis, hilbe...

F. Aboutorabi Goudarzi M. S. Asgari

In this paper we investigate a new notion of bases in Hilbert spaces and similar to fusion frame theory we introduce fusion bases theory in Hilbert spaces. We also introduce a new denition of fusion dual sequence associated with a fusion basis and show that the operators of a fusion dual sequence are continuous projections. Next we dene the fusion biorthogonal sequence, Bessel fusion basis, Hil...

2007
Martin Henk Robert Weismantel

Absact This paper deals with the study of test sets of the knapsack problem and simultaneous diophantine approximation. The Graver test set of the knapsack problem can be derived from minimal integral solutions of linear diophantine equations. We present best possible inequalities that must be satisfied by all minimal integral solutions of a linear diophantine equation and prove that for the co...

Journal: :Math. Program. 2014
Raymond Hemmecke Matthias Köppe Robert Weismantel

We consider N-fold 4-block decomposable integer programs, which simultaneously generalize N-fold integer programs and two-stage stochastic integer programs with N scenarios. In previous work [R. Hemmecke, M. Köppe, R. Weismantel, A polynomial-time algorithm for optimizing over N-fold 4block decomposable integer programs, Proc. IPCO 2010, Lecture Notes in Computer Science, vol. 6080, Springer, 2...

Journal: :Thorax 1975
S C Lee H Johnson

A case of multiple nodular pulmonary amyloidosis in a 54-year-old Caucasian man is presented. Discrete symptomless radiodensities had developed in this patient's lungs within a period of three years, leading to a suspicion of a neoplastic process. The amyloid nature of these nodules was demonstrated by biopsy. In this case, as in others previously reported, there was no evidence of systemic dis...

Journal: :Journal of medical genetics 1980
C J Brackenridge

The discriminatory power of ten factors has been explored in relation to the presence or absence of muscular rigidity in patients with Huntington's disease. The sex and neurological sign of an affected parent were the only two significant determinants of rigidity or choreoathetosis in offspring. It was shown, using the Mantel-Haenszel method of adjusting for confounding variables that the risk ...

Journal: :فصلنامه رفاه اجتماعی 0
معصومه نصیری masoomeh nasiri

the issues that arise in this articles are the causes and the bases of social - and sexual - devience according to a sociological point of view. then a search through a number of 350 files of sexual - crimes in babol, declares the causes on a sociological point of view, cultural transmission & contrast theory. in assessment during this research regarding age, sex & occupation as the main criter...

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