نتایج جستجو برای: concavity method

تعداد نتایج: 1631765  

2003
P. W. ELOE

Keywords--Concavity, Finite differences, Green's function. In [1], Gatica, Oliker and Waltman employed concavity to show that if y " ( t ) _< 0, 0 < t < 1, then

Journal: :Chemical communications 2014
Yumin Chen Qing-Song Chen Si-Yan Peng Zhi-Qiao Wang Gang Lu Guo-Cong Guo

Manipulating the degrees of concavity or Miller indices of high-index facets is significant for metal nanocrystals to further tailor their properties; however, generating a concave surface with negative curvature is still in the early development stage and tuning the degree of concavity remains a challenge. Herein, we have developed a simple and effective site-selective etching strategy to mani...

Journal: :J. Comb. Theory, Ser. A 2011
Jeff Kahn M. Neiman

We introduce the antipodal pairs property for probability measures on finite Boolean algebras and prove that conditional versions imply strong forms of log-concavity. We give several applications of this fact, including improvements of some results of Wagner [15]; a new proof of a theorem of Liggett [9] stating that ultra-log-concavity of sequences is preserved by convolutions; and some progres...

2010
Dirk Bergemann

5 A Brief Review of Optimization 27 5.1 Constraints . . . . . . . . . . . . . . . . . . . . . . . . . 27 5.2 Lagrange . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 5.3 Constrained Optimization . . . . . . . . . . . . . . . . . 29 5.4 Example . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 5.5 Understanding Lagrangians . . . . . . . . . . . . . . . . 31 5.6 Concavity and Quas...

Journal: :Linear Algebra and its Applications 2011

Journal: :acta medica iranica 0
mohammad asadpour piranfar department of cardiology, taleghani hospital, school of medicine, shahid beheshti univerisyt of medical sciences, tehran, iran.

functional mitral regurgitation (mr) results from left ventricular remodeling, leaflet tethering or tenting. coronary artery disease is one of the important causes of functional mr due to tethering. detection of functional mr and its severity are important factors in patient prognosis. there are different methods for detection of functional mr and its severity, including anterior mitral leaflet...

Journal: :Advances in Mathematics 2021

In this paper, we study the conjecture of Gardner and Zvavitch from [22], which suggests that standard Gaussian measure γ enjoys 1n-concavity with respect to Minkowski addition symmetric convex sets. We prove fact up a factor 2: is, show for K L, λ∈[0,1],γ(λK+(1−λ)L)12n≥λγ(K)12n+(1−λ)γ(L)12n. More generally, inequality holds sets containing origin. Further, under suitable dimension-free uniform...

Journal: :journal of medical signals and sensors 0

many genetic disorders or possible abnormalities that may occur in the future generations can be predicted through analyzing the features of the chromosomes. for this purpose, karyotype is often used which to make it, there is necessary to identify each one of the 24 chromosomes from the microscopic images. the first step of this process is to define the morphological and band pattern based fea...

Journal: :Random Struct. Algorithms 2010
Jeff Kahn M. Neiman

OF THE DISSERTATION Negative correlation and log-concavity by Michael Neiman Dissertation Director: Jeff Kahn This thesis is concerned with negative correlation and log-concavity properties and relations between them, with much of our motivation provided by [40], [46], and [12]. Our main results include a proof that “almost exchangeable” measures satisfy the “FederMihail” property; counterexamp...

Journal: :Journal of Nonlinear Mathematical Physics 2021

Abstract In this paper, we study the initial boundary value problem of pseudo-parabolic p ( x )-Laplacian equation with logarithmic nonlinearity. The existence global solution is obtained by using potential well method and inequality. addition, sufficient conditions blow-up are concavity method.

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