Results 101 to 110 of about 363,931 (208)

The number of equilibria of smooth infinite economies with separable utilities [PDF]

open access: yes
We construct an index theorem for smooth infinite economies with separable utilities that shows that generically the number of equilbria is odd. As a corollary, this gives a new proof of existence and gives conditions that guarantee global uniqueness of ...
Covarrubias, Enrique
core   +1 more source

Determinacy of equilibria of smooth infinite economies [PDF]

open access: yes
This paper deals with generic determinacy of equilibria for infinite dimensional consumption spaces. Our work could be seen as an infinite-dimensional analogue of Dierker and Dierker (1972), by characterising equilibria of an economy as a zero of the ...
Covarrubias, Enrique
core   +1 more source

On the continuity of the map square root of nonnegative isomorphisms in Hilbert spaces

open access: yesRevista Integración, 2015
Let H be a real (or complex) Hilbert space. Every nonnegative operator L ∈ L(H) admits a unique nonnegative square root R ∈ L(H), i.e., a nonnegative operator R ∈ L(H) such that R2 = L.
Jeovanny de Jesus Muentes Acevedo
doaj  

Sub-Riemannian Geometry and Geodesics in Banach Manifolds [PDF]

open access: yesThe Journal of Geometric Analysis, 2019
In this paper, we define and study sub-Riemannian structures on Banach manifolds. We obtain extensions of the Chow-Rashevski theorem for exact controllability, and give conditions for the existence of a Hamiltonian geodesic flow despite the lack of a Pontryagin Maximum Principle in the infinite dimensional setting.
openaire   +4 more sources

A characterization of Walrasian economies of infinity dimension [PDF]

open access: yes
We consider a pure exchange economy, where agent's consumption spaces are Banach spaces, goods are contingent in time of states of the world, the utility function of each agent is not necessarily a separable function, but increasing, quasiconcave, and ...
Elvio Accinelli, Martín Puchet
core  

Some recent work in Frechet geometry

open access: yes, 2011
Some recent work in Frechet geometry is briefly reviewed. In particular an earlier result on the structure of second tangent bundles in the finite dimensional case was extended to infinite dimensional Banach manifolds and Frechet manifolds that could be ...
Dodson, C. T. J.
core  

Integrability on Direct Limit Banach manifolds

open access: yes, 2014
This paper is devoted to the framework of direct limit of anchored Banach bundles over a convenient manifold which is a direct limit of Banach manifold. In particular we give a criterion of integrability for distributions on such convenient manifolds which are locally direct limits of particular sequences of Banach anchor ranges.
Cabau, Patrick, Pelletier, Fernand
openaire   +2 more sources

Schwarz's lemma and the Kobayashi and Carathéodory pseudometrics on complex Banach manifolds [PDF]

open access: green, 2003
Clifford J. Earle   +3 more
openalex   +1 more source

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