منابع مشابه
Random Cross Ratios
The main result of this paper is the derivation of the probability density function of the cross ratio k a b c d c a d b d a c b when the numbers a, b, c and d are independent stochastic variables with identical rectangular distribution. The probability density function of the cross ratio is needed to study the effectiveness of invariant based recognition systems. A short background into invari...
متن کاملOn the polyhedrality of cross and quadrilateral closures
Split cuts form a well-known class of valid inequalities for mixed-integer programming problems. Cook, Kannan and Schrijver (1990) showed that the split closure of a rational polyhedron P is again a polyhedron. In this paper, we extend this result from a single rational polyhedron to the union of a finite number of rational polyhedra. We then use this result to prove that cross cuts yield closu...
متن کاملCross Ratios Associated with Maximal Representations
We define a generalization of the classical four-point cross ratio of hyperbolic geometry on the unit circle given by invariant functions on Shilov boundaries of arbitrary bounded symmetric domains of tube type. This generalization is functorial and well-behaved under products. In fact, these two properties determine our extension uniquely. Any maximal representation of a closed surface group c...
متن کاملBounded Cohomology, Cross Ratios and Cocycles
We use cross ratios to describe second real continuous bounded cohomology for locally compact σ-compact topological groups. We also investigate the second continuous bounded cohomology group of a closed subgroup of the isometry group Iso(X) of a proper hyperbolic geodesic metric space X and derive some rigidity results for Iso(X)-valued cocycles.
متن کاملExplaining cross-country export performance: international linkages and internal geography
This paper investigates the determinants of countries’ export performance looking in particular at the role of international product market linkages. We begin with a novel decomposition of the growth in countries’ exports into the contribution from increases in external demand and from improved internal supply-side conditions. Building on the results of this decomposition, we move on to an econ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Singularities
سال: 2015
ISSN: 1949-2006
DOI: 10.5427/jsing.2015.13h