70,811 research outputs found
L vector spaces and L fields
We construct in ZFC an L topological vector space -- a topological vector
space that is an L space -- and an L field -- a topological field that is an L
space. This generalizes results in [5] and [8].Comment: It has been accepted for publication in SCIENCE CHINA Mathematic
Holonomic Spaces
A holonomic space is a normed vector space, , a subgroup, ,
of and a group-norm, , with a convexity property. We
prove that with the metric , is a metric space which is locally
isometric to a Euclidean ball. Given a Sasaki-type metric on a vector bundle
over a Riemannian manifold, we prove that the triplet is
a holonomic space, where is the holonomy group and is the length
norm defined within. The topology on given by the is finer than
the subspace topology while still preserving many desirable properties. Using
these notions, we introduce the notion of holonomy radius for a Riemannian
manifold and prove it is positive. These results are applicable to the
Gromov-Hausdorff convergence of Riemannian manifolds.Comment: 17 page
Quotient spaces of boundedly rational types
By identifying types whose low-order beliefs – up to level li – about the state of nature coincide, we obtain quotient type spaces that are typically smaller than the original ones, preserve basic topological properties, and allow standard equilibrium analysis even under bounded reasoning. Our Bayesian Nash (li; l-i)-equilibria capture players’ inability to distinguish types belonging to the same equivalence class. The case with uncertainty about the vector of levels (li; l-i) is also analyzed. Two examples illustrate the constructions.Incomplete-information games, high-order reasoning, type space, quotient space, hierarchies of beliefs, bounded rationality
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