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The question how many real analytic equiaffine connections with arbitrary torsion exist locally on a smooth manifold of dimension is studied. The families of general equiaffine connections and with skew-symmetric Ricci tensor, or with symmetric Ricci tensor, respectively, are described in terms of the number of arbitrary functions of variables.
HIV infection is multi-faceted and a multi-step process. The virus-induced pathogenic
mechanisms are manifold and mediated through a range of positive and negative feedback
regulations of immune and physiological processes engaged in virus-host interactions. The
fundamental questions towards understanding the pathogenesis of HIV infection are now
shifting to ‘dynamic’ categories: (i) why is the HIV-immune response equilibrium finally
disrupted? (ii)...
In this paper a strategy is investigated for the spatial coupling of an asymptotic
preserving scheme with the asymptotic limit model, associated to a singularly perturbed,
highly anisotropic, elliptic problem. This coupling strategy appears to be very
advantageous as compared with the numerical discretization of the initial singular
perturbation model or the purely asymptotic preserving scheme introduced in previous works [3, 5]. The model problem addressed...
The space missions Voyager and Cassini together with earthbound observations revealed a wealth of structures in Saturn’s rings. There are, for example, waves being excited at ring positions which are in orbital resonance with Saturn’s moons. Other structures can be assigned to embedded moons like empty gaps, moon induced wakes or S-shaped propeller features. Furthermore, irregular radial structures are observed in the range from 10 meters until kilometers. Here some of these structures will be discussed...
We describe hypergeometric solutions of the quantum differential equation of the cotangent bundle of a
partial flag variety. These hypergeometric solutions manifest the Landau-Ginzburg mirror symmetry for the cotangent bundle of a partial flag variety.
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