The flattening of spiral-galaxy rotation curves is unnatural in view the expectations from Kepler's third law and a central mass. It interesting, however, that radius-independence velocity what one expects less dimension. In our three-dimensional space, curve natural if, outside galaxy's center, gravitational potential corresponds to very prolate ellipsoid, filament, string, or otherwise cylind...

We studied zircon from banded iron formations (BIFs) in the Kostomuksha greenstone belt (KGSB), Karelian Craton, for first time. Here, BIFs are associated with Mesoarchean basalt-komatiites – BIF-1 and felsic volcanics BIF-2, as well Neoarchean graywackes BIF-3. All contain accessory zircon. Analysis of its isotopic age shows presence 1-4 clusters each sample. There single grains detrital most ...

The Late Upper Palaeolithic Hamburgian tradition reflects the earliest known human presence in northern Europe after Last Glacial Maximum. We report here on open-air site of Jels 3 (Denmark) and its associated stone tool assemblage, which can be unambiguously attributed to this period. Along with only a handful other sites, represents northernmost limits expansion at time. conduct technological...

The article discusses the results of solving two classical problems physics and their consequences - problem radiation a hydrogen-like atom scattering by mathematical method integer theory. transition to formulation these in terms theory became possible as result hypothesis that, during interaction physical objects, exchange quantities that are conserved occurs such way have common measure befo...

Abstract Quasi-periodic oscillations (QPOs) observed in the power spectrum of black holes are unique observational probes to background spacetime since they can be directly related timescales associated with motion matter orbiting vicinity hole horizon. In this regard, high frequency QPOs (HFQPOs) particularly interesting as occur commensurable pairs, most common ratio being 3:2 twin peak QPOs....

attributes Involving a significant amount of high-level reasoning about the meaning and purpose of the objects or scenes depicted (e.g. illegal plantation). They are outside the scope of the current research activity. Figure 2. Logical representation of data and derived attributes extraction of primitive features and the reduction of the resulting data into primitive feature clusters. The primi...

The gapless modes on the edge of four-dimensional (4D) quantum Hall droplets are known to be anisotropic: they only propagate in one direction, foliating 3D boundary into independent 1D conduction channels. This foliation is extremely sensitive confining potential and generically yields chaotic flows. Here we study correlations entanglement such 4D confined by harmonic traps, whose a squashed t...

Abstract Given a closed smooth manifold M of even dimension $$2n\ge 6$$ 2 n ≥ 6 with finite fundamental group, we show that the classifying space $$B\textrm{Diff}(M)$$ B Diff ( <m...

BS(m,n) =< x, y|xyx = y > are some of the simplest interesting infinite groups which are not lattices in Lie groups. They have been studied in depth from the point of view of combinatorial group theory. It is natural to ask if the geometric approach to the theory of infinite groups, which has been so successful in the study of lattices, can yield any insights in this nonlinear case. The first s...