منابع مشابه
Fragmenting consciousness.
T he mechanism of human consciousness persists as a fundamental question in science and philosophy. As English biologist T. H. Huxley noted, “how it is that anything so remarkable as a state of consciousness comes about as the result of irritating nervous tissue, is just as unaccountable as the appearance of the Djin when Aladdin rubbed his lamp.” Although the neurobiological basis of phenomena...
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A fundamental step in evaluation of warhead perfonnance is the characterization of fragments emitted during warhead detonation. The emitted fragments must be captured, a process made difficult by their high initial speeds; however, the capture must be "soft" to avoid breaking the fragments into pieces, thus changing the mass distribution. Customary techniques involve the capture in sheets of so...
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Problem 1.5.7 from Pitman’s Saint-Flour lecture notes [11]: Does there exist for each n a fragmentation process (Πn,k, 1 ≤ k ≤ n) such that Πn,k is distributed like the partition generated by cycles of a uniform random permutation of {1, 2, . . . , n} conditioned to have k cycles? We show that the answer is yes. We also give a partial extension to general exchangeable Gibbs partitions.
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A. The filling length of an edge-circuit η in the Cayley 2-complex of a finitely presented group is the least integer L such that there is a combinatorial null-homotopy of η down to a basepoint through loops of length at most L. We introduce similar notions in which the null-homotopy is not required to fix a basepoint, and in which the contracting loop is allowed to bifurcate. We exhibit...
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Citing this paper Please note that where the full-text provided on King's Research Portal is the Author Accepted Manuscript or Post-Print version this may differ from the final Published version. If citing, it is advised that you check and use the publisher's definitive version for pagination, volume/issue, and date of publication details. And where the final published version is provided on th...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2012
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.1217595109