In this paper we give a method to associate a graph with an arbitrary density matrix referred to a standard orthonormal basis in the Hilbert space of a finite dimensional quantum system. We study the related issues like classification of pure and mixed states, Von-Neumann entropy, separability of multipartite quantum states and quantum operations in terms of the graphs associated with quantum s...

book p.80. 4. Burkhart S. A unified biomechanical rationale for the treatment of rotator cuff tears : Debridement versus repair. In : Rotator Cuff Disorders. W. Z. Burkhead, ed. Williams & Wilkins, Baltimore, 1996, pp. 293-312. 5. Cofield R. H. Status of total shoulder arthroplasty. Arch. Surg., 1977, 112, 1088-1091. 6. Favard L., Nové Josserand L., Levigne C., Boileau P., Walch G. Anatomical a...

The authors introduce a novel entropic notion with the purpose of quantifying disorder/uncertainty in networks. This is based on the Laplacian and it is exactly the von Neumann entropy of certain quantum mechanical states. It is remarkable that the von Neumann entropy depends on spectral properties and it can be computed efficiently. The analytical results described here and the numerical compu...

We explore the possibility to compare positions in different directed and undirected graphs. assume an agent have a preference relation over weighted (directed undirected) graphs, stating pairwise comparisons between these positions. Ideally, such can be expressed by utility function, where are evaluated their assigned ‘utility’. Extending relations mixture set containing all lotteries graph po...

we report an unusual case of a young male with cerebellar hemangioblastoma treated previously for medullary carcinoma of thyroid, whose pet/ct scans revealed a constellation of findings that suggested the rare von hippel lindau syndrome. the diagnosis was clinched by confirming the findings on whole body contrast enhanced computed tomography (cect) and contrast enhanced magnetic resonance imagi...

In this paper, we consider an approach to updating Datalog neg databases containing two kinds of rules, namely query-rules and update-rules that can be seen as constraints. Update-rules are used to compute the side eeects of updates, and these side eeects act as exceptions to derivations through query-rules. Additionally, every fact to be inserted or to be deleted is stored in the database. In ...

Many distributed database applications need to replicate data to improve data availability and query response time. The two-phase-commit protocol guarantees mutual consistency of replicated data but does not provide good performance. Lazy replication has been used as an alternative solution. In this case, mutual consistency is relaxed and the concept of freshness is used to measure the deviatio...

let $n$ be any positive integer, the friendship graph $f_n$ consists of $n$ edge-disjoint triangles that all of them meeting in one vertex. a graph $g$ is called cospectral with a graph $h$ if their adjacency matrices have the same eigenvalues. recently in href{http://arxiv.org/pdf/1310.6529v1.pdf}{http://arxiv.org/pdf/1310.6529v1.pdf} it is proved that if $g$ is any graph cospectral with $f_n$...

Underground pipelines constitute one of the most important ways to transport large amounts of fluid (e.g. oil and water) through long distances. However, existing leakage detection techniques do not work well in monitoring the underground pipelines due to the harsh underground environmental conditions. In this paper, a new solution, the magnetic induction (MI)-based wireless sensor network for ...