Results 21 to 30 of about 552 (144)

Convex and quasiconvex functions in metric graphs [PDF]

open access: yes, 2021
We study convex and quasiconvex functions on a metric graph. Given a set of points in the metric graph, we consider the largest convex function below the prescribed datum.
Rossi, Julio Daniel   +2 more
core   +1 more source

Approximating Quasiconvex Functions with Strictly Quasiconvex Ones in Banach Space

open access: yes, 2017
In this paper we show how to approximate a quasiconvex function with a sequence of strictly quasiconvex functions in a reflexive Banach space ...
Roberto Lucchetti   +3 more
core   +1 more source

Generalized fractional integral inequalities by means of quasiconvexity

open access: yesAdvances in Difference Equations, 2019
Using the newly introduced fractional integral operators in (Fasc. Math. 20(4):5-27, 2016) and (East Asian Math. J. 21(2):191-203, 2005), we establish some novel inequalities of the Hermite–Hadamard type for functions whose second derivatives in absolute
Eze R. Nwaeze
doaj   +1 more source

Boundary unique continuation in planar domains by conformal mapping

open access: yesBulletin of the London Mathematical Society, Volume 58, Issue 5, May 2026.
Abstract Let Ω⊂R2$\Omega \subset \mathbb {R}^2$ be a chord arc domain. We give a simple proof of the the following fact, which is commonly known to be true: a nontrivial harmonic function which vanishes continuously on a relatively open set of the boundary cannot have the norm of the gradient which vanishes on a subset of positive surface measure (arc ...
Stefano Vita
wiley   +1 more source

Simple incentives and diverse beliefs

open access: yesTheoretical Economics, Volume 21, Issue 2, Page 500-534, May 2026.
This paper studies a moral hazard problem in which the principal does not know the agent's beliefs about the output generating process. The agent is risk neutral, transfers are subject to limited liability, and the principal evaluates contracts according to their worst‐case payoff against a rich set of plausible agent beliefs.
Maxwell Rosenthal
wiley   +1 more source

Some Quantum Estimates of Hermite-Hadamard Inequalities for Quasi-Convex Functions

open access: yesMathematics, 2019
In this paper, we develop some quantum estimates of Hermite-Hadamard type inequalities for quasi-convex functions. In some special cases, these quantum estimates reduce to the known results.
Hefeng Zhuang, Wenjun Liu, Jaekeun Park
doaj   +1 more source

Dynamic Incentives in Incompletely Specified Environments

open access: yesEconometrica, Volume 94, Issue 2, Page 375-406, March 2026.
Consider a repeated interaction where it is unknown which of various stage games will be played each period. This framework separates the basic logic of intertemporal incentives from the requirement that any given strategy profile yields a well‐defined payoff vector.
Gabriel Carroll
wiley   +1 more source

Some Reciprocal Classes of Close-to-Convex and Quasi-Convex Analytic Functions

open access: yesMathematics, 2019
The present paper comprises the study of certain functions which are analytic and defined in terms of reciprocal function. The reciprocal classes of close-to-convex functions and quasi-convex functions are defined and studied.
Shahid Mahmood   +3 more
doaj   +1 more source

Combination theorems for Wise's power alternative

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 1, January 2026.
Abstract We show that Wise's power alternative is stable under certain group constructions, use this to prove the power alternative for new classes of groups and recover known results from a unified perspective. For groups acting on trees, we introduce a dynamical condition that allows us to deduce the power alternative for the group from the power ...
Mark Hagen   +2 more
wiley   +1 more source

Evenly convex sets, and evenly quasiconvex functions, revisited [PDF]

open access: yes, 2020
Since its appearance, even convexity has become a remarkable notion in convex analysis. In the fifties, W. Fenchel introduced the evenly convex sets as those sets solving linear systems containing strict inequalities.
Goberna, Miguel A.   +2 more
core   +1 more source

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