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Approximation and composition of functions in quantized tensor trains via orthogonal polynomial expansions

Rodríguez-Aldavero, Juan José et al.
arXiv (All) · Papers
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15a6965d05numerical-analysisquantum-physics
This work explores the representation of univariate and multivariate functions as quantized tensor trains (QTT). It develops a constructive algorithm that employs expansions in orthogonal polynomial bases and Clenshaw evaluations to represent analytic and highly differentiable functions as QTT appro
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