On Diffusion Semigroups Preserving the Log-Concavity
نویسندگان
چکیده
منابع مشابه
Linear transformations preserving log-concavity
In this paper, we prove that the linear transformation yi = i ∑ j=0 ( m+ i n+ j ) xj , i = 0, 1, 2, . . . preserves the log-concavity property. © 2002 Elsevier Science Inc. All rights reserved.
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Log-concave and Log-convex sequences arise often in combinatorics, algebra, probability and statistics. There has been a considerable amount of research devoted to this topic in recent years. Let {xi}i≥0 be a sequence of non-negative real numbers. We say that {xi} is Log-concave ( Log-convex resp.) if and only if xi−1xi+1 ≤ xi (xi−1xi+1 ≥ xi resp.) for all i ≥ 1 (relevant results can see [2] an...
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ژورنال
عنوان ژورنال: Journal of Functional Analysis
سال: 2001
ISSN: 0022-1236
DOI: 10.1006/jfan.2001.3772