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Title: The tensor t‐function: A definition for functions of third‐order tensors

Journal Article · · Numerical Linear Algebra with Applications
DOI: https://doi.org/10.1002/nla.2288 · OSTI ID:1600869

Summary A definition for functions of multidimensional arrays is presented. The definition is valid for third‐order tensors in the tensor t‐product formalism, which regards third‐order tensors as block circulant matrices. The tensor function definition is shown to have similar properties as standard matrix function definitions in fundamental scenarios. To demonstrate the definition's potential in applications, the notion of network communicability is generalized to third‐order tensors and computed for a small‐scale example via block Krylov subspace methods for matrix functions. A complexity analysis for these methods in the context of tensors is also provided.

Sponsoring Organization:
USDOE
Grant/Contract Number:
grant DE‐SC 00165783
OSTI ID:
1600869
Journal Information:
Numerical Linear Algebra with Applications, Journal Name: Numerical Linear Algebra with Applications Vol. 27 Journal Issue: 3; ISSN 1070-5325
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
United Kingdom
Language:
English
Citation Metrics:
Cited by: 25 works
Citation information provided by
Web of Science

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