Results 51 to 60 of about 5,323 (169)

On uniqueness for the critical wave equation [PDF]

open access: yes, 2006
We prove the uniqueness of weak solutions to the critical defocusing wave equation in 3D under a local energy inequality condition. More precisely, we prove the uniqueness of $ u \in L^\infty\_t(\dot{H}^{1})\cap \dot{W}^{1,\infty}\_t(L^2)$, under the ...
Masmoudi, Nader, Planchon, Fabrice
core   +3 more sources

Zeros of Bessel function derivatives

open access: yes, 2016
We prove that for $\nu>n-1$ all zeros of the $n$th derivative of Bessel function of the first kind $J_{\nu}$ are real and simple. Moreover, we show that the positive zeros of the $n$th and $(n+1)$th derivative of Bessel function of the first kind $J_{\nu}
Baricz, Árpád   +2 more
core   +1 more source

Generalized Niezgoda's Inequality with Refinements and Applications [PDF]

open access: yesSahand Communications in Mathematical Analysis
Motivated by the results of Niezgoda, corresponding to the generalization of Mercer's inequality for positive weights, in this paper, we consider real weights, for which we establish related results.
Faiza Rubab   +3 more
doaj   +1 more source

Dynamically Consistent Analysis of Realized Covariations in Term Structure Models

open access: yesMathematical Finance, Volume 36, Issue 1, Page 203-236, January 2026.
ABSTRACT In this article, we show how to analyze the covariation of bond prices nonparametrically and robustly, staying consistent with a general no‐arbitrage setting. This is, in particular, motivated by the problem of identifying the number of statistically relevant factors in the bond market under minimal conditions.
Dennis Schroers
wiley   +1 more source

On Measuring the Complexity of Urban Living [PDF]

open access: yes
This paper explores the concept of city ranking as a way to measure dynamics and complexities of urban life. These rankings have various dimensions and uses.
Hasan, Lubna Hasan
core   +10 more sources

Tight Bounds for Symmetric Divergence Measures and a New Inequality Relating $f$-Divergences

open access: yes, 2015
Tight bounds for several symmetric divergence measures are introduced, given in terms of the total variation distance. Each of these bounds is attained by a pair of 2 or 3-element probability distributions.
Sason, Igal
core   +1 more source

Determinants of neonatal mortality in rural India, 2007-2008. [PDF]

open access: yes, 2013
Background. Despite the growing share of neonatal mortality in under-5 mortality in the recent decades in India, most studies have focused on infant and child mortality putting neonatal mortality on the back seat.
Kumar, A., Kumar, A., Singh, Aditya
core   +1 more source

Projection‐based estimators for matrix/tensor‐valued data

open access: yesScandinavian Journal of Statistics, Volume 52, Issue 4, Page 2152-2186, December 2025.
Abstract A general approach for extending estimators to matrix‐ and tensor‐valued data is proposed. The extension is based on using random projections to project out dimensions of a tensor and then computing a multivariate estimator for each projection. The mean of the obtained set of estimates is used as the final, joint estimate. In some basic cases,
Joni Virta   +2 more
wiley   +1 more source

Generalized Jensen-Mercer Inequality for Functions with Nondecreasing Increments

open access: yesAbstract and Applied Analysis, 2016
In the year 2003, McD Mercer established an interesting variation of Jensen’s inequality and later in 2009 Mercer’s result was generalized to higher dimensions by M. Niezgoda. Recently, Asif et al.
Asif R. Khan, Sumayyah Saadi
doaj   +1 more source

A Theory of Natural Addiction [PDF]

open access: yes, 2007
Economic theories of rational addiction aim to describe consumer behavior in the presence of habit-forming goods. We provide a biological foundation for this body of work by formally specifying conditions under which it is optimal to form a habit.
Ainslie   +102 more
core   +1 more source

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