Results 1 to 10 of about 28,375 (89)
Invertible Darboux Transformations [PDF]
, 2013 For operators of many different kinds it has been proved that (generalized) Darboux transformations can be built using so called Wronskian formulae.
Shemyakova, Ekaterina
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Coagulation and fragmentation processes with evolving size and shape profiles : a semigroup approach [PDF]
, 2013 We investigate a class of bivariate coagulation-fragmentation equations. These equations describe the evolution of a system of particles that are characterised not only by a discrete size variable but also by a shape variable which can be either discrete
A. C. McBride +15 more
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The automatic solution of partial differential equations using a global spectral method [PDF]
, 2015 A spectral method for solving linear partial differential equations (PDEs) with variable coefficients and general boundary conditions defined on rectangular domains is described, based on separable representations of partial differential operators and ...
Olver, Sheehan, Townsend, Alex
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Racah Polynomials and Recoupling Schemes of $\mathfrak{su}(1,1)$ [PDF]
, 2015 The connection between the recoupling scheme of four copies of $\mathfrak{su}(1,1)$, the generic superintegrable system on the 3 sphere, and bivariate Racah polynomials is identified. The Racah polynomials are presented as connection coefficients between
Post, Sarah
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POVMs: a small but important step beyond standard quantum mechanics [PDF]
, 2006 It is the purpose of the present contribution to demonstrate that the generalization of the concept of a quantum mechanical observable from the Hermitian operator of standard quantum mechanics to a positive operator-valued measure is not a peripheral ...
et al., xx +4 more
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Fast Covariance Estimation for High-dimensional Functional Data [PDF]
, 2013 For smoothing covariance functions, we propose two fast algorithms that scale linearly with the number of observations per function. Most available methods and software cannot smooth covariance matrices of dimension $J \times J$ with $J>500$; the ...
Crainiceanu, Ciprian +3 more
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Stable image reconstruction using total variation minimization [PDF]
, 2013 This article presents near-optimal guarantees for accurate and robust image recovery from under-sampled noisy measurements using total variation minimization.
Needell, Deanna, Ward, Rachel
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Multiple Factorizations of Bivariate Linear Partial Differential Operators
, 2009 We study the case when a bivariate Linear Partial Differential Operator (LPDO) of orders three or four has several different factorizations. We prove that a third-order bivariate LPDO has a first-order left and right factors such that their symbols are
A.V. Zhiber +16 more
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Derivatives pricing in energy markets: an infinite dimensional approach [PDF]
, 2014 Based on forward curves modelled as Hilbert-space valued processes, we analyse the pricing of various options relevant in energy markets. In particular, we connect empirical evidence about energy forward prices known from the literature to propose ...
Benth, Fred Espen, Krühner, Paul
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Order-Degree Curves for Hypergeometric Creative Telescoping
, 2012 Creative telescoping applied to a bivariate proper hypergeometric term produces linear recurrence operators with polynomial coefficients, called telescopers. We provide bounds for the degrees of the polynomials appearing in these operators.
Chen, Shaoshi, Kauers, Manuel
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