Results 41 to 50 of about 329,265 (363)

Simple Mechanisms for a Subadditive Buyer and Applications to Revenue Monotonicity

open access: yesACM Trans. Economics and Comput., 2018
We study the revenue maximization problem of a seller with n heterogeneous items for sale to a single buyer whose valuation function for sets of items is unknown and drawn from some distribution D.
A. Rubinstein, S. Weinberg
semanticscholar   +1 more source

New properties for the Ramanujan R-function

open access: yesOpen Mathematics, 2022
In the article, we establish some monotonicity and convexity (concavity) properties for certain combinations of polynomials and the Ramanujan R-function by use of the monotone form of L’Hôpital’s rule and present serval new asymptotically sharp bounds ...
Cai Chuan-Yu   +3 more
doaj   +1 more source

Questions of existence and uniqueness of the solution of one class of an infinite system of nonlinear two-dimensional equations [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика
The paper is devoted to the study of one class of infinite systems of nonlinear two-dimensional equations with convex and monotone nonlinearity. The studied  class of nonlinear systems of algebraic equations has both theoretical and practical ...
Petrosyan, Haykanush S.   +2 more
doaj   +1 more source

Monotonicity properties and bounds for the complete p-elliptic integrals

open access: yesJournal of Inequalities and Applications, 2018
We generalize several monotonicity and convexity properties as well as sharp inequalities for the complete elliptic integrals to the complete p-elliptic integrals.
T. Huang   +3 more
semanticscholar   +1 more source

MHD Boundary Layers Theory in Sobolev Spaces Without Monotonicity I: Well‐Posedness Theory [PDF]

open access: yesCommunications on Pure and Applied Mathematics, 2016
We study the well‐posedness theory for the MHD boundary layer. The boundary layer equations are governed by the Prandtl‐type equations that are derived from the incompressible MHD system with non‐slip boundary condition on the velocity and perfectly ...
Cheng-Jie Liu, Feng Xie, Tong Yang
semanticscholar   +1 more source

On approximating the modified Bessel function of the second kind

open access: yesJournal of Inequalities and Applications, 2017
In the article, we prove that the double inequalities π e − x 2 ( x + a ) < K 0 ( x ) < π e − x 2 ( x + b ) , 1 + 1 2 ( x + a ) < K 1 ( x ) K 0 ( x ) < 1 + 1 2 ( x + b ) $$ \frac{\sqrt{\pi}e^{-x}}{\sqrt{2(x+a)}}< K_{0}(x)< \frac{\sqrt{\pi }e^{-x}}{\sqrt ...
Zhen-Hang Yang, Yu-Ming Chu
doaj   +1 more source

Updating Utility Functions on Preordered Sets

open access: yesMathematics, 2023
We consider the problem of extending a function fP defined on a subset P of an arbitrary set X to X strictly monotonically with respect to a preorder ≽ defined on X , without imposing continuity constraints.
Pavel Chebotarev
doaj   +1 more source

On Monotone Trajectories [PDF]

open access: yesProceedings of the American Mathematical Society, 1991
In this paper C 1 {C^1} strongly monotone dynamical systems are investigated. It is proved that the set of points with precompact orbits which converge to a not unstable equilibrium but whose trajectories are not eventually strongly monotone is nowhere dense.
openaire   +2 more sources

npbr: A Package for Nonparametric Boundary Regression in R

open access: yesJournal of Statistical Software, 2017
The package npbr is the first free specialized software for data edge and frontier analysis in the statistical literature. It provides a variety of functions for the best known and most innovative approaches to nonparametric boundary estimation.
Abdelaati Daouia   +2 more
doaj   +1 more source

Evolution of the first eigenvalue of the Laplace operator and the p-Laplace operator under a forced mean curvature flow

open access: yesOpen Mathematics, 2020
In this paper, we discuss the monotonicity of the first nonzero eigenvalue of the Laplace operator and the p-Laplace operator under a forced mean curvature flow (MCF).
Qi Xuesen, Liu Ximin
doaj   +1 more source

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