Results 51 to 60 of about 958,896 (366)
Advances in Mathematics, 2004 A theory of ramification of general valuations in algebraic function fields of arbitrary dimension in characteristic \(0\) is developed generalizing the classical ramification theory of local Dedekind domains. In positive characteristic similar results are obtained in dimension two.
Olivier Piltant, Steven Dale Cutkosky
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Journal of Pure and Applied Algebra, 2017 We establish some properties of toiles and associated valuations over complex analytic spaces, showing that Abhyankar's inequality holds. We give some examples of pathological behavior of these valuations. We prove a regularization theorem for complex analytic morphisms.
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Monomial discrete valuations in k[[X]]
, 2003 Let v be a rank m discrete valuation of k[[X1,...,Xn]] with dimension n-m. We prove that there exists an inmediate extension L of K where the valuation is monomial.
Acosta, Miguel Angel Olalla +2 more
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Valuation equations for stochastic volatility models [PDF]
, 2011 We analyze the valuation partial differential equation for European contingent claims in a general framework of stochastic volatility models where the diffusion coefficients may grow faster than linearly and degenerate on the boundaries of the state ...
Bayraktar, Erhan +2 more
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Quasi-valuations extending a valuation
Journal of Algebra, 2012 Suppose $F$ is a field with valuation $v$ and valuation ring $O_{v}$, $E$ is a finite field extension and $w$ is a quasi-valuation on $E$ extending $v$. We study quasi-valuations on $E$ that extend $v$; in particular, their corresponding rings and their prime spectrums. We prove that these ring extensions satisfy INC (incomparability), LO (lying over),
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On a lattice with a valuation [PDF]
Proceedings of the American Mathematical Society, 1952 A real-valued function v(x) defined on a lattice is called a valuation if and only if it satisfies (1) v(x) + v(y) = v(x C' y) + v(x U y), and a distributive valuation if and only if it satisfies (2,) 2{v(xU yJ Uz)-v(xr y rz)} = v(x J y) + v(y.J z) + v(z u x) v(xf l y) v(y z) v(z n x). If z=xY.y, then (2) becomes (1); therefore a distributive valuation
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Communications, 2021 Computational models of artificial neural networks are currently used in different areas. Accuracy of results exceeds the performance of traditional statistical techniques. Artificial neural networks as the Kohonen map may be used e.g.
Jakub Horák +2 more
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American Journal of Mathematics, 2016 All measurable and $\operatorname{SL}(n)$-covariant vector valued valuations on convex polytopes containing the origin in their interiors are completely classified. The moment vector is shown to be essentially the only such valuation.
Lukas Parapatits, Christoph Haberl
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Business Value of IT Investment: The Case of a Low Cost Airline’s Website [PDF]
, 2007 Using the case of a low cost airline company’s website we analyze some special research questions of information technology valuation. The distinctive characteristics of this research are the ex post valuation perspective; the parallel and comparative ...
Aranyossy, Márta
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The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada
Population Ecology, EarlyView.We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
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