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- W2154017369 abstract "Variational problems have long been used to mathematically model physical systems. Their advantage has been the simplicity of the model as well as the ability to deduce information concerning the functional dependence of the system on various parameters embedded in the variational trial functions. However, the only method in use for estimating the error in a variational approximation has been to compare the variational result to the exact solution. In this Letter, we demonstrate that one can computationally obtain estimates of the errors in a one-dimensional variational approximation, without any a priori knowledge of the exact solution. Additionally, this analysis can be done by using only linear techniques. The extension of this method to multidimensional problems is clearly possible, although one could expect that additional difficulties could arise." @default.
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- W2154017369 date "2007-03-01" @default.
- W2154017369 modified "2023-09-27" @default.
- W2154017369 title "Quantitative measurement of variational approximations" @default.
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- W2154017369 doi "https://doi.org/10.1016/j.physleta.2006.12.051" @default.
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