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6,038
Smooth Stabilization Implies Coprime Factorization
, 1989
"... This paper shows that coprime right factorizations exist for the input to state mapping of a continuous time nonlinear system provided that the smooth feedback stabilization problem be solvable for this system. In particular, it follows that feedback linearizable systems admit such factorizations. I ..."
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Cited by 472 (62 self)
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perturbations analogous to those studied in operator theoretic approaches to systems; it states that smooth stabilization implies smooth inputtostate stabilization. 1 Introduction Constructions of coprime factorizations for nonlinear systems have been obtained of late in the literature ([10], [12], [8
Axiomatic quantum field theory in curved spacetime
, 2008
"... The usual formulations of quantum field theory in Minkowski spacetime make crucial use of features—such as Poincare invariance and the existence of a preferred vacuum state—that are very special to Minkowski spacetime. In order to generalize the formulation of quantum field theory to arbitrary globa ..."
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Cited by 689 (18 self)
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to a fundamental status, and, in essence, all of the properties of the quantum field theory are determined by its OPE. We provide general axioms for the OPE coefficients of a quantum field theory. These include a local and covariance assumption (implying that the quantum field theory is locally
Lambertian Reflectance and Linear Subspaces
, 2000
"... We prove that the set of all reflectance functions (the mapping from surface normals to intensities) produced by Lambertian objects under distant, isotropic lighting lies close to a 9D linear subspace. This implies that, in general, the set of images of a convex Lambertian object obtained under a wi ..."
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Cited by 526 (20 self)
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We prove that the set of all reflectance functions (the mapping from surface normals to intensities) produced by Lambertian objects under distant, isotropic lighting lies close to a 9D linear subspace. This implies that, in general, the set of images of a convex Lambertian object obtained under a
The Determinants of Credit Spread Changes.
 Journal of Finance
, 2001
"... ABSTRACT Using dealer's quotes and transactions prices on straight industrial bonds, we investigate the determinants of credit spread changes. Variables that should in theory determine credit spread changes have rather limited explanatory power. Further, the residuals from this regression are ..."
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Cited by 422 (2 self)
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proxy is constructed from atand outofthe money puts, and atand inthemoney calls with the shortest maturity on the nearby S&P 500 futures contract. We first compute implied volatilities for each strike K using the standard Black and Scholes (1973) model. We then fit the linear
Random Dynamics and Finance: Constructing Implied Binomial Trees from a Predetermined Stationary Density
, 2006
"... We introduce a general binomial model for asset prices based on the concept of random maps. The asymptotic stationary distribution for such model is studied using techniques from dynamical systems. In particular, we present a technique to construct a general binomial model with a predetermined stati ..."
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Cited by 2 (0 self)
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stationary distribution. This technique is independent of the chosen distribution making our model potentially useful in financial applications. We brie y explore the suitability of our construction as an implied binomial tree.
Team mental model: Construct or metaphor
 Journal of Management
, 1994
"... There has been a recent resurgence of interest in group cognition in the field of organizational science. However, despite the apparent enthusiasm for the notion of the group mind in some modern guise, important conceptual work is needed to examine the concept critically. We attempt to do this in ou ..."
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Cited by 283 (4 self)
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this in our treatment of the content, form, function, antecedents, and consequences of team mental models. In addition, we illustrate how the construct can bring explanatory power to theories of team performance and offer other implicationsfor research and practice. From the outset, writers who have had
Five Facts About Prices: A Reevaluation of Menu Cost Models,” Quarterly
 Journal of Economics
, 2008
"... Abstract We establish five facts about prices in the U.S. economy: 1) The median frequency of nonsale price change is 912% per month, roughly half of what it is including sales. This implies an uncensored median duration of regular prices of 811 months. Product turnover plays an important role in ..."
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Cited by 326 (9 self)
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Abstract We establish five facts about prices in the U.S. economy: 1) The median frequency of nonsale price change is 912% per month, roughly half of what it is including sales. This implies an uncensored median duration of regular prices of 811 months. Product turnover plays an important role
Discovery of Inference Rules for Question Answering
 Natural Language Engineering
, 2001
"... One of the main challenges in questionanswering is the potential mismatch between the expressions in questions and the expressions in texts. While humans appear to use inference rules such as “X writes Y ” implies “X is the author of Y ” in answering questions, such rules are generally unavailable ..."
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Cited by 309 (7 self)
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One of the main challenges in questionanswering is the potential mismatch between the expressions in questions and the expressions in texts. While humans appear to use inference rules such as “X writes Y ” implies “X is the author of Y ” in answering questions, such rules are generally unavailable
Online Convex Programming and Generalized Infinitesimal Gradient Ascent
, 2003
"... Convex programming involves a convex set F R and a convex function c : F ! R. The goal of convex programming is to nd a point in F which minimizes c. In this paper, we introduce online convex programming. In online convex programming, the convex set is known in advance, but in each step of some ..."
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Cited by 298 (4 self)
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been constructed. We introduce an algorithm for this domain, apply it to repeated games, and show that it is really a generalization of in nitesimal gradient ascent, and the results here imply that generalized in nitesimal gradient ascent (GIGA) is universally consistent.
Intertemporal choice and inequality
 Journal of political economy
, 1994
"... The permanent income hypothesis implies that, for any cohort of people born at the same time, inequality in both consumption and income should grow with age. We investigate this prediction using cohort data constructed from 11 years of household survey data from the United States, 22 years from Grea ..."
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Cited by 290 (4 self)
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The permanent income hypothesis implies that, for any cohort of people born at the same time, inequality in both consumption and income should grow with age. We investigate this prediction using cohort data constructed from 11 years of household survey data from the United States, 22 years from
Results 1  10
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