We present an improved protocol for entanglement purification of bipartite mixed states using several states at a time rather than two at a time as in the traditional recurrence method. We also present a generalization of the hashing method to n-partite cat states, which achieves a finite yield of pure cat states for any desired fidelity. Our results are compared to previous protocols.

“abstraction principle” means separation between two obligations incommercial instruments: underlying obligation and documentary obligationthat created by drawing these documents. the main effect of this principle isthat objections related to first obligation, cannot be claim in second; wherethere is a third party. to obtain a real and comprehensive perspective of thisprinciple in iranian law, ...

the present article deals with britain’s competitions with russia aimed at controlling its policies in iran; for this purpose, we focus mostly on the developments at the last fifteen years of the 19th century. part of this period is concurrent with the administration of the british conservative party under the premiership of lord robert cecil salisbury in britain and sir henry drummond wolff’s ...

1Departamento de Medicina Veterinária. Universidade Federal de Lavras. Lavras, Minas Gerais. Brasil. *[email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected] 2Departamento de Zootecnia. Universidade Federal de Lavras. Lavras, Minas Gerais. Brasil. [email protected] 3Faculdade de Engenharia de Pesca....

Schulze voting is a recently introduced voting system enjoying unusual popularity and a high degree of real-world use, with users including the Wikimedia foundation, several branches of the Pirate Party, and MTV. It is a Condorcet voting system that determines the winners of an election using information about paths in a graph representation of the election. We resolve the complexity of many el...