共查询到20条相似文献,搜索用时 0 毫秒
1.
In the framework of values for TU-games, it is shown that a particular type of consistency, called linear consistency, together
with some kind of standardness for two-person games, imply efficiency, anonymity, linearity, as well as uniqueness of the
value. Among others, this uniform treatment generalizes Sobolev's axiomatization of the Shapley value.
Revised version: December 2001 相似文献
2.
In this paper we prove a characterization for the subclass of non-balanced T
U-games. The result is stated in terms of certain class of cycles of pre-imputations. A cycle is a finite sequence of pre-imputations, where each pair of neighbouring elements are interrelated to each other through a transfer of some amount of utility from members of a certain coalition to the members of the complementary coalition, with the understanding that individual gains or losses within any coalition are proportional to the number of members of the coalition. These cycles are strongly connected with a transfer scheme designed to reach a point in the core of a T
U-game provided this set is non-empty.The main result of this paper provides an alternative characterization of balanced TU-games to Shapley-Bondarevas theorem.I would like to thank A. Cali for her helpful observations, and two anonymous referees for their detailed comments and suggestions to improve substantially the presentation of the paper. 相似文献
3.
Assignment games with stable core 总被引:1,自引:0,他引:1
We prove that the core of an assignment game (a two-sided matching game with transferable utility as introduced by Shapley
and Shubik, 1972) is stable (i.e., it is the unique von Neumann-Morgenstern solution) if and only if there is a matching between
the two types of players such that the corresponding entries in the underlying matrix are all row and column maximums. We
identify other easily verifiable matrix properties and show their equivalence to various known sufficient conditions for core-stability.
By these matrix characterizations we found that on the class of assignment games, largeness of the core, extendability and
exactness of the game are all equivalent conditions, and strictly imply the stability of the core. In turn, convexity and
subconvexity are equivalent, and strictly imply all aformentioned conditions.
Final version: April 1, 2001 相似文献
4.
5.
Portfolio management with stable distributions 总被引:3,自引:0,他引:3
6.
We prove a theorem on the intersection of the Weber sets (Weber, 1988) of two ordered cooperative games. From this theorem several consequences are derived, the inclusion of the core in the Weber set (Weber, 1988), the fact that every convex game has a large core (Sharkey, 1982), and a discrete separation theorem (Frank, 1982). We introduce a definition of general largeness, proving that the Weber set is large for any cooperative game.Institutional support from research grants SGR2001-0029 and BEC 2002-00642 is gratefully acknowledged. 相似文献
7.
Theo S. H. Driessen 《TOP》1996,4(1):165-185
Summary The τ-value is a one-point solution concept for transferable utility (TU-) games. The paper introduces a particular type of
a reduced game. It is established that the τ-value possesses the reduced game property with respect to the reduced game presented.
That is, there is no inconsistency in what the players of the reduced game receive-either in the original game or in the reduced
game-according to the τ-value concept. In addition, the paper provides an axiomatic characterization of the τ-value in terms
of the relevant reduced game property and standardness for two-person games. 相似文献
8.
Structure of Positive Solutions of Quasilinear Elliptic Equations with Critical and Supercritical Growth
下载免费PDF全文
![点击此处可从《偏微分方程(英文版)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
The structure of positive radial solutions to a class of quasilinear elliptic equations with critical and supercritical growth is precisely studied. A large solution and a small solution are obtained for the equations. It is shown that the large solution is unique, its asymptotic behaviour and flat core are also discussed. 相似文献
9.
In this paper we review the theory of cells (particles) that evolve according to a dynamics determined by friction and that interact between themselves by means of suitable potentials. We derive by means of elementary arguments several macroscopic equations that describe the evolution of cell density. Some new results are also obtained—a formal derivation of a limit equation in the case of attractive potential as well as in the case of repulsive potential with a hard‐core part are presented. Finally we discuss the possible relevance of those results within the framework of individual cell‐based models. Several classes of potentials, including hard‐core, repulsive and potentials with attractive parts are discussed. The effect of noise terms in the equation is also considered. Copyright © 2005 John Wiley & Sons, Ltd. 相似文献
10.
Let G
m,n be the class of strategic games with n players, where each player has m≥2 pure strategies. We are interested in the structure of the set of correlated equilibria of games in G
m,n when n→∞. As the number of equilibrium constraints grows slower than the number of pure strategy profiles, it might be conjectured
that the set of correlated equilibria becomes large. In this paper, we show that (1) the average relative measure of the set
of correlated equilibria is smaller than 2−n; and (2) for each 1<c<m, the solution set contains c
n correlated equilibria having disjoint supports with a probability going to 1 as n grows large. The proof of the second result hinges on the following inequality: Let c
1, …, c
l be independent and symmetric random vectors in R
k, l≥k. Then the probability that the convex hull of c
1, …, c
l intersects R
k
+ is greater than or equal to .
Received: December 1998/Final version: March 2000 相似文献
11.
The logical and algorithmic properties of stable conditional independence (CI) as an alternative structural representation of conditional independence information are investigated. We utilize recent results concerning a complete axiomatization of stable conditional independence relative to discrete probability measures to derive perfect model properties of stable conditional independence structures. We show that stable CI can be interpreted as a generalization of Markov networks and establish a connection between sets of stable CI statements and propositional formulas in conjunctive normal form. Consequently, we derive that the implication problem for stable CI is coNP-complete. Finally, we show that Boolean satisfiability (SAT) solvers can be employed to efficiently decide the implication problem and to compute concise, non-redundant representations of stable CI, even for instances involving hundreds of random variables. 相似文献
12.
We study the core of a non-atomic game v which is uniformly continuous with respect to the DNA-topology and continuous at the grand coalition. Such a game has a unique
DNA-continuous extension on the space B
1 of ideal sets. We show that if the extension is concave then the core of the game v is non-empty iff is homogeneous of degree one along the diagonal of B
1. We use this result to obtain representation theorems for the core of a non-atomic game of the form v=f^μ where μ is a finite dimensional vector of measures and f is a concave function. We also apply our results to some non-atomic games which occur in economic applications.
Received May 1998/Revised version September 1998 相似文献
13.
Theo S. H. Driessen 《International Journal of Game Theory》1998,27(2):301-303
In this note we prove that the kernel of a bilateral assignment game is always included in the core. This solves an outstanding
open problem for bilateral assignment games.
Received January 1997/Final version June 1997 相似文献
14.
Oscar Volij 《International Journal of Game Theory》2000,29(1):63-79
We analyze an economy with asymmetric information and endogenize the possibilities for information transmission between members
of a coalition. We then define a concept of the Core that takes into account these communication possibilities. The internal
consistency of the improvements is considered and an Internally Consistent Core, which requires credibility from the improvements
is introduced.
Received: September 1998/revised version: June 1999 相似文献
15.
16.
Pedro F. dos Santos 《Topology and its Applications》2009,156(5):979-996
Let G be a finite group. For a based G-space X and a Mackey functor M, a topological Mackey functor is constructed, which will be called the stable equivariant abelianization of X with coefficients in M. When X is a based G-CW complex, is shown to be an infinite loop space in the sense of G-spaces. This gives a version of the RO(G)-graded equivariant Dold-Thom theorem. Applying a variant of Elmendorf's construction, we get a model for the Eilenberg-Mac Lane spectrum HM. The proof uses a structure theorem for Mackey functors and our previous results. 相似文献
17.
18.
Erich Novak 《Numerische Mathematik》1988,53(5):609-620
Summary The average error of suitable quadrature formulas and the stochastic error of Monte Carlo methods are both much smaller than the worst case error in many cases. This depends, however, on the classF of functions which is considered and there are counterexamples as well.Nonlinear methods, adaptive methods, or even methods with varying cardinality are not significantly better (with respect to certain stochastic error bounds) than the simplest linear methods
. 相似文献
19.
Andre Reznikov 《Journal of the American Mathematical Society》2008,21(2):439-477
We use the uniqueness of various invariant functionals on irreducible unitary representations of in order to deduce the classical Rankin-Selberg identity for the sum of Fourier coefficients of Maass cusp forms and its new anisotropic analog. We deduce from these formulas non-trivial bounds for the corresponding unipotent and spherical Fourier coefficients of Maass forms. As an application we obtain a subconvexity bound for certain -functions. Our main tool is the notion of a Gelfand pair from representation theory.
20.
Closed kernel systems of the coalition matrix turn out to correspond to cones of games on which the core correspondence is
additive and on which the related barycentric solution is additive, stable and continuous. Different perfect cones corresponding
to closed kernel systems are described.
Received: December 2001/Revised: July 2002
RID="*"
ID="*" This note contains the new results, which were presented by the first author in an invited lecture at the XIV Italian
Meeting on Game Theory and Applications in Ischia, July 2001. The lecture was dedicated to Irinel Dragan on the occasion of
his seventieth birthday. 相似文献