A negotiation model combines an alternating offers bargaining game with a normal form stage game that determines players' (interim) disagreement payoffs. Busch and Wen (1995) investigated this negotiation model under the assumption that players' past mixed disagreement actions are observable....

For a prime let be the Brown-Peterson spectrum with homotopy ring . Using the arithmetical properties of the coe cients in the Brown-Peterson -series, we obtain the complete structure of the -module generated by the canonical elements

We consider the integral of a function and its approximation by a quadrature rule of the form i.e. by a rule which uses the values of both and its derivative at nodes of the quadrature rule. We examine the cases when the integrand is either a smooth function or an dependent function of the form...

In this paper we introduce and study the categorical group of derivations from a categorical group into a braided categorical group equipped with a given coherent left action of . Categorical groups provide a 2-dimensional vision of groups and so this object is a sort of 0-cohomology at a higher...

Let be a hypergraph, has the Helly property if any intersecting family has a non-empty intersection. In this article we give a polynomial algorithm to recognize if any partial sub-hypergraph of a hypergraph has the Helly property

In this paper we show that a function defined on a subset of a finite domain and which represents the restiction of an asymmetric and transitive binary relation on the subset can be extended to a utility function on the entire domain. A simple proof of Szpilrajn's Extension Theorem which is...

Previous algoritms for the construction of belief networks structures from data are mainly based either on independence criteria or on scoring metrics. The aim of this paper is to present a hybrid methodology that is a combination of these two approaches, which benefits from, characteristics of...

It is shown that a resampling method based on cross differences provides a valid approximation to the distributions of the sample means of random variables observed on a spatial grid. The random variables are allowed to have different distributions with smoothly varying expected values between...

The authors of the paper together with their colleagues have developed and applied a software complex based on the computer algebra system (CAS) ”Mathematica” [1], which allows to model mechanical systems, conduct qualitative investigations and solve some problems of both rigid body...