Results 41 to 50 of about 430 (171)

Prosoluble subgroups of the profinite completion of the fundamental group of compact 3‐manifolds

Journal of the London Mathematical Society, Volume 112, Issue 4, October 2025.
Abstract We give a description of finitely generated prosoluble subgroups of the profinite completion of 3‐manifold groups and toral relatively hyperbolic virtually compact special groups.
Lucas C. Lopes, Pavel A. Zalesskii
wiley   +1 more source

Locally geodesically quasiconvex functions on complete Riemannian manifolds

, 1986
In this article, we investigate the topological structure of complete Riemannian manifolds admitting locally geodesically quasiconvex functions, whose family includes all geodesically convex functions.
Takao Yamaguchi
core   +1 more source

Convexité au sens direct ou inverse et applications dans l'optimisation vectorielle

Journal of Numerical Analysis and Approximation Theory, 2000
(in English) The aim of this paper is to study vector optimization poblems involving objective functions which are convex in some direct or inverse sense (i.e. a special class of cone-quasiconvex functions).
Nicolae Popovici
doaj   +2 more sources

Regulating Over‐the‐Counter Markets

The Journal of Finance, Volume 80, Issue 4, Page 1929-1962, August 2025.
ABSTRACT Over‐the‐counter (OTC) trading thrives despite competition from exchanges. We let OTC dealers cream skim from exchanges in an otherwise standard Glosten and Milgrom framework. Restricting the dealer's ability to cream skim induces “cheap substitution”: some traders exit while others with larger gains from trade enter.
TOMY LEE, CHAOJUN WANG
wiley   +1 more source

A well‐posed variational approach to the identification and convergent approximation of material laws from boundary data

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 105, Issue 7, July 2025.
Abstract We formulate the problem of material identification as a problem of optimal control in which the deformation of the specimen is the state variable and the unknown material law is the control variable. We assume that the material obeys finite elasticity and that the deformation of the specimen is in static equilibrium with prescribed boundary ...
Sergio Conti, Michael Ortiz
wiley   +1 more source

About the sum of quasiconvex functions [PDF]

, 2017
We provide conditions under which the sum of two quasiconvex functions is also a quasiconvex ...
Flores-Bazán, Fabian, García Ramos, Yboon, Hadjisavvas, Nicolas   +2 more
core  

Quantitative Fundamental Theorem of Asset Pricing

Mathematical Finance, Volume 35, Issue 3, Page 636-660, July 2025.
ABSTRACT In this paper, we provide a quantitative analysis of the concept of arbitrage, that allows us to deal with model uncertainty without imposing the no‐arbitrage condition. In markets that admit “small arbitrage,” we can still make sense of the problems of pricing and hedging.
Beatrice Acciaio, Julio Backhoff‐Veraguas, Gudmund Pammer   +2 more
wiley   +1 more source

Characterizations of Strongly Quasiconvex Functions

Journal of Global Optimization
We provide new necessary and sufficient conditons for ensuring strong quasiconvexity in the nonsmooth case and, as a consequence, we provide a proof for the differentiable case. Furthermore, we improve the quadratic growth property for strongly quasiconvex functions.
Nicolas Hadjisavvas, Felipe Lara 0001
openaire   +2 more sources

Subgroups of word hyperbolic groups in dimension 2 over arbitrary rings

Journal of the London Mathematical Society, Volume 112, Issue 1, July 2025.
Abstract In 1996, Gersten proved that finitely presented subgroups of a word hyperbolic group of integral cohomological dimension 2 are hyperbolic. We use isoperimetric functions over arbitrary rings to extend this result to any ring. In particular, we study the discrete isoperimetric function and show that its linearity is equivalent to hyperbolicity,
Shaked Bader, Robert Kropholler, Vladimir Vankov   +2 more
wiley   +1 more source

Linear programming relaxation for quasiconvex programming

, 2021
In this paper, we study linear programming relaxation for quasiconvex programming in terms of generators of quasiconvex functions. We recall linear transformation of quasiconvex inequality systems in terms of a generator. We introduce a relaxed objective
Suzuki, Satoshi
core