منابع مشابه
Spontaneous generation of eigenvalues
We show that the action of conformal vector fields on functions on the sphere determines the spectrum of the Laplacian (or the conformal Laplacian), without further input of information. The spectra of intertwining operators (both differential and non-local) with principal part a power of the Laplacian follows as a corollary. An application of the method is the sharp form of Gross’ entropy ineq...
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It is possible to compute j(τ) and its modular equations with no perception of its related classical group structure except at ∞. We start by taking, for p prime, an unknown “p-Newtonian” polynomial equation g(u, v) = 0 with arbitrary coefficients (based only on Newton’s polygon requirements at ∞ for u = j(τ) and v = j(pτ)). We then ask which choice of coefficients of g(u, v) leads to some cons...
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Prions are transmissible agents that cause lethal neurodegeneration in humans and other mammals. Prions bind avidly to metal surfaces such as steel wires and, when surface-bound, can initiate infection of brain or cultured cells with remarkable efficiency. While investigating the properties of metal-bound prions by using the scrapie cell assay to measure infectivity, we observed, at low frequen...
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So far, various components of image characteristics have been used for steganalysis, including the histogram characteristic function, adjacent colors distribution, and sample pair analysis. However, some certain steganography methods have been proposed that can thwart some analysis approaches through managing the embedding patterns. In this regard, the present paper is intended to introduce a n...
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The proposal that the transmissible agent in prion diseases can be a conformationally altered host protein that multiplies by autocatalytic conversion has gained wide acceptance. Recent work shows that the agent, the prion, can be replicated in a cell-free system, that it can be generated de novo, and that the strain-specific properties of prions are encoded by conformational variations of the ...
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ژورنال
عنوان ژورنال: Journal of Geometry and Physics
سال: 2006
ISSN: 0393-0440
DOI: 10.1016/j.geomphys.2005.12.001