Airline Liability for Loss, Damage or Delay of Passenger Baggage

The article discusses remedies and methods of enforcing airline liability for loss, damage or delay of passenger baggage. The article includes a discussion of the law as it relates both to domestic flights and to international flights where passenger luggage is lost, damaged or delayed. The article includes a discussion of the Warsaw Convention as it relates to international flights and of the Federal Aviation Regulations applicable in the case of domestic flights

Book Review: Sovereignty, Statehood and Self-Determination: A Review of Claims to Statehood in International Law

To tour the world while examining the various claims to sovereignty over virtually every inch, one may read Nil Lante Wallace-Bruce\u27s book, Claims to Statehood in International Law. His book is a fascinating excursion through the four worlds. Although the origin of the terminology is obscure,\u27 the term First World clearly refers to capitalist countries historically belonging to NATO and the Organization for Economic Cooperation and Development (OECD). The term Second World refers to the former Soviet Bloc. The term Third World refers to everything else, and has come to mean economically developing countries.2 More recently, the term Fourth World was coined to refer to indigenous populations whose lands and cultures are engulfed by countries of the First, Second and Third Worlds. Dr. Wallace-Bruce\u27s short book differs from the leading book on the subject of statehood in that his book consists primarily of case studies with particular emphasis on recent difficult cases

Book Review: Sovereignty, Statehood and Self-Determination: A Review of Claims to Statehood in International Law

To tour the world while examining the various claims to sovereignty over virtually every inch, one may read Nil Lante Wallace-Bruce\u27s book, Claims to Statehood in International Law. His book is a fascinating excursion through the four worlds. Although the origin of the terminology is obscure,\u27 the term First World clearly refers to capitalist countries historically belonging to NATO and the Organization for Economic Cooperation and Development (OECD). The term Second World refers to the former Soviet Bloc. The term Third World refers to everything else, and has come to mean economically developing countries.2 More recently, the term Fourth World was coined to refer to indigenous populations whose lands and cultures are engulfed by countries of the First, Second and Third Worlds. Dr. Wallace-Bruce\u27s short book differs from the leading book on the subject of statehood in that his book consists primarily of case studies with particular emphasis on recent difficult cases

A Classification of Minimal Sets of Torus Homeomorphisms

We provide a classification of minimal sets of homeomorphisms of the two-torus, in terms of the structure of their complement. We show that this structure is exactly one of the following types: (1) a disjoint union of topological disks, or (2) a disjoint union of essential annuli and topological disks, or (3) a disjoint union of one doubly essential component and bounded topological disks. Periodic bounded disks can only occur in type 3. This result provides a framework for more detailed investigations, and additional information on the torus homeomorphism allows to draw further conclusions. In the non-wandering case, the classification can be significantly strengthened and we obtain that a minimal set other than the whole torus is either a periodic orbit, or the orbit of a periodic circloid, or the extension of a Cantor set. Further special cases are given by torus homeomorphisms homotopic to an Anosov, in which types 1 and 2 cannot occur, and the same holds for homeomorphisms homotopic to the identity with a rotation set which has non-empty interior. If a non-wandering torus homeomorphism has a unique and totally irrational rotation vector, then any minimal set other than the whole torus has to be the extension of a Cantor set.Comment: Published in Mathematische Zeitschrift, June 2013, Volume 274, Issue 1-2, pp 405-42

Efficient algorithms for tensor scaling, quantum marginals and moment polytopes

We present a polynomial time algorithm to approximately scale tensors of any format to arbitrary prescribed marginals (whenever possible). This unifies and generalizes a sequence of past works on matrix, operator and tensor scaling. Our algorithm provides an efficient weak membership oracle for the associated moment polytopes, an important family of implicitly-defined convex polytopes with exponentially many facets and a wide range of applications. These include the entanglement polytopes from quantum information theory (in particular, we obtain an efficient solution to the notorious one-body quantum marginal problem) and the Kronecker polytopes from representation theory (which capture the asymptotic support of Kronecker coefficients). Our algorithm can be applied to succinct descriptions of the input tensor whenever the marginals can be efficiently computed, as in the important case of matrix product states or tensor-train decompositions, widely used in computational physics and numerical mathematics. We strengthen and generalize the alternating minimization approach of previous papers by introducing the theory of highest weight vectors from representation theory into the numerical optimization framework. We show that highest weight vectors are natural potential functions for scaling algorithms and prove new bounds on their evaluations to obtain polynomial-time convergence. Our techniques are general and we believe that they will be instrumental to obtain efficient algorithms for moment polytopes beyond the ones consider here, and more broadly, for other optimization problems possessing natural symmetries

The impact of space and space-related activities on a local economy. a case study of boulder, colorado. part ii- the income-product accounts

Total impact of space and space related activities on local economy of Boulder, Colorado - income-product account

Topological Entropy of Braids on the Torus

A fast method is presented for computing the topological entropy of braids on the torus. This work is motivated by the need to analyze large braids when studying two-dimensional flows via the braiding of a large number of particle trajectories. Our approach is a generalization of Moussafir's technique for braids on the sphere. Previous methods for computing topological entropies include the Bestvina--Handel train-track algorithm and matrix representations of the braid group. However, the Bestvina--Handel algorithm quickly becomes computationally intractable for large braid words, and matrix methods give only lower bounds, which are often poor for large braids. Our method is computationally fast and appears to give exponential convergence towards the exact entropy. As an illustration we apply our approach to the braiding of both periodic and aperiodic trajectories in the sine flow. The efficiency of the method allows us to explore how much extra information about flow entropy is encoded in the braid as the number of trajectories becomes large.Comment: 19 pages, 44 figures. SIAM journal styl

Returns to Hedge Fund Activism: An International Study

This paper provides evidence on the incidence, characteristics, and performance of activist engagements across countries. We find that the incidence of activism is greatest with high institutional ownership, particularly for U.S. institutions. We use a sample of 1,740 activist engagements across 23 countries and find that almost one-quarter of engagements are by multi-activists engaging the same target. These engagements perform strikingly better than single activist engagements. Engagement outcomes, such as board changes and takeovers, vary across countries and significantly contribute to the returns to activism. Japan is an exception, with high initial expectations and low outcomes