Tensor Spaces and Numerical Tensor Calculus [electronic resource] / by Wolfgang Hackbusch.
Contributor(s): SpringerLink (Online service)Material type: TextSeries: Springer Series in Computational Mathematics: 42Publisher: Berlin, Heidelberg : Springer Berlin Heidelberg, 2012Description: XXIV, 500 p. online resourceContent type: text Media type: computer Carrier type: online resourceISBN: 9783642280276Subject(s): Mathematics | Chemistry, Physical and theoretical | Numerical analysis | Physics | Mathematics | Numerical Analysis | Theoretical and Computational Chemistry | Theoretical, Mathematical and Computational PhysicsAdditional physical formats: Printed edition:: No titleDDC classification: 518 LOC classification: QA297-299.4Online resources: Click here to access online
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Part I: Algebraic Tensors -- Introduction -- Matrix Tools -- Algebraic Foundations of Tensor Spaces -- Part II: Functional Analysis of Tensor Spaces -- Banach Tensor Spaces -- General Techniques -- Minimal Subspaces.-Part III: Numerical Treatment -- r-Term Representation -- Tensor Subspace Represenation -- r-Term Approximation -- Tensor Subspace Approximation.-Hierarchical Tensor Representation -- Matrix Product Systems -- Tensor Operations -- Tensorisation -- Generalised Cross Approximation -- Applications to Elliptic Partial Differential Equations -- Miscellaneous Topics -- References -- Index.
Special numerical techniques are already needed to deal with nxn matrices for large n. Tensor data are of size nxnx...xn=n^d, where n^d exceeds the computer memory by far. They appear for problems of high spatial dimensions. Since standard methods fail, a particular tensor calculus is needed to treat such problems. The monograph describes the methods how tensors can be practically treated and how numerical operations can be performed. Applications are problems from quantum chemistry, approximation of multivariate functions, solution of pde, e.g., with stochastic coefficients, etc.