Báo cáo toán học: "An extension of a criterion for unimodality" pps

... zeros: if all the zeros of a polynomial are real and negative, then it is log concave and therefore unimodal [5]. A simple criterion for unimodality was established in [2]: if a j is a nondecreasing ... Log-concave and unimodal sequences in Algebra, Combinatorics and Ge- ometry: an update. Contemporary Mathematics, 178, 71-84, 1994. [4] Stanley, R.: Log-concave and unimodal sequ...

Ngày tải lên: 07/08/2014, 06:22

... Dethloff and Tran Van Tan 11. G. Dethloff and Tran Van Tan, Uniqueness problem for meromorphic mappings with truncated multiplicities and moving targets, Nagoya Math. J. (to appear). An Extension of ... functions f and g on the complex plane C, if they have the same inverse images for five distinct values, then f = g,andthatg is a special type of a linear fractional tran- formation...

Ngày tải lên: 06/08/2014, 05:20

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Ngày tải lên: 05/08/2014, 09:46

... R-submodularity as an extension of rank submodularity of matroids. While some instances of R-submodularity are known for all matroids, we also showed that there exists a class of well-behaved matro ... is likely there are matroids that are B-Rayleigh but not Z-Rayleigh, finding an example of such a matroid still remains open. Acknowledg ements I am thankful to Alan Sokal for...

Ngày tải lên: 08/08/2014, 14:23

... Finally, Bayesian statistics and self-organizing maps (SOMs) have also been applied as techniques that can facilitate the estimation of network capacity. Among the articles that report so are ... [15] A Bantouna, K Tsagkaris, P Demestichas, in ICAAN 2010: Artificial Neural Networks – ICANN 2010 PART II, ed. by K Diamantaras, W Duch, LS Iliadis. 20th International Conference on Artif...

Ngày tải lên: 20/06/2014, 20:20

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Ngày tải lên: 05/08/2014, 15:21

... is often called the Thue-Morse sequence and has appeared in various fields of mathematics. See, for example, the paper [AS1], which contains a review of the main properties of this sequence and ... =  k∈N 1 k! G k . An explicit formula. It is interesting to give an alternate (longer) proof of Lemma 7, which has the advantage of providing the explicit formulas of H and G. There...

Ngày tải lên: 07/08/2014, 15:22

... : NCORREA at ANDESCOL Abstract Attribute grammars are an elegant formalization of the augmented context-free grammars characteristic of most current natural language systems. This paper presents ... Notation and Preliminaries We follow the usual notation and terminology for grammars and languages. A language is a set of strings o~,er a finite set T of symbols. A g...

Ngày tải lên: 01/04/2014, 00:20

... Provisional PDF corresponds to the article as it appeared upon acceptance. Fully formatted PDF and full text (HTML) versions will be made available soon. New proofs of Schur-concavity for a class of ... (sftguchun@buu.edu.cn) ISSN 1029-242X Article type Research Submission date 24 May 2011 Acceptance date 17 January 2012 Publication date 17 January 2012 Article URL http://www.journalo...

Ngày tải lên: 20/06/2014, 21:20

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Ngày tải lên: 05/08/2014, 10:20