Volume 39, Issue 1
Random Double Tensors Integrals

Shih Yu Chang & Yimin Wei

Ann. Appl. Math., 39 (2023), pp. 1-28.

Published online: 2023-04

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  • Abstract

In this work, we try to build a theory for random double tensor integrals (DTI). We begin with the definition of DTI and discuss how randomness structure is built upon DTI. Then, the tail bound of the unitarily invariant norm for the random DTI is established and this bound can help us to derive tail bounds of the unitarily invariant norm for various types of two tensors means, e.g., arithmetic mean, geometric mean, harmonic mean, and general mean. By associating DTI with perturbation formula, i.e., a formula to relate the tensor-valued function difference with respect the difference of the function input tensors, the tail bounds of the unitarily invariant norm for the Lipschitz estimate of tensor-valued function with random tensors as arguments are derived for vanilla case and quasi-commutator case, respectively. We also establish the continuity property for random DTI in the sense of convergence in the random tensor mean, and we apply this continuity property to obtain the tail bound of the unitarily invariant norm for the derivative of the tensor-valued function.

  • AMS Subject Headings

15A09, 65F20

  • Copyright

COPYRIGHT: © Global Science Press

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@Article{AAM-39-1, author = {Chang , Shih Yu and Wei , Yimin}, title = {Random Double Tensors Integrals}, journal = {Annals of Applied Mathematics}, year = {2023}, volume = {39}, number = {1}, pages = {1--28}, abstract = {

In this work, we try to build a theory for random double tensor integrals (DTI). We begin with the definition of DTI and discuss how randomness structure is built upon DTI. Then, the tail bound of the unitarily invariant norm for the random DTI is established and this bound can help us to derive tail bounds of the unitarily invariant norm for various types of two tensors means, e.g., arithmetic mean, geometric mean, harmonic mean, and general mean. By associating DTI with perturbation formula, i.e., a formula to relate the tensor-valued function difference with respect the difference of the function input tensors, the tail bounds of the unitarily invariant norm for the Lipschitz estimate of tensor-valued function with random tensors as arguments are derived for vanilla case and quasi-commutator case, respectively. We also establish the continuity property for random DTI in the sense of convergence in the random tensor mean, and we apply this continuity property to obtain the tail bound of the unitarily invariant norm for the derivative of the tensor-valued function.

}, issn = {}, doi = {https://doi.org/10.4208/aam.OA-2023-0004}, url = {http://global-sci.org/intro/article_detail/aam/21630.html} }
TY - JOUR T1 - Random Double Tensors Integrals AU - Chang , Shih Yu AU - Wei , Yimin JO - Annals of Applied Mathematics VL - 1 SP - 1 EP - 28 PY - 2023 DA - 2023/04 SN - 39 DO - http://doi.org/10.4208/aam.OA-2023-0004 UR - https://global-sci.org/intro/article_detail/aam/21630.html KW - Einstein product, double tensor integrals (DTI), random DTI, tail bound, Lipschitz estimate, convergence in the random tensor mean, derivative of tensor-valued function. AB -

In this work, we try to build a theory for random double tensor integrals (DTI). We begin with the definition of DTI and discuss how randomness structure is built upon DTI. Then, the tail bound of the unitarily invariant norm for the random DTI is established and this bound can help us to derive tail bounds of the unitarily invariant norm for various types of two tensors means, e.g., arithmetic mean, geometric mean, harmonic mean, and general mean. By associating DTI with perturbation formula, i.e., a formula to relate the tensor-valued function difference with respect the difference of the function input tensors, the tail bounds of the unitarily invariant norm for the Lipschitz estimate of tensor-valued function with random tensors as arguments are derived for vanilla case and quasi-commutator case, respectively. We also establish the continuity property for random DTI in the sense of convergence in the random tensor mean, and we apply this continuity property to obtain the tail bound of the unitarily invariant norm for the derivative of the tensor-valued function.

Chang , Shih Yu and Wei , Yimin. (2023). Random Double Tensors Integrals. Annals of Applied Mathematics. 39 (1). 1-28. doi:10.4208/aam.OA-2023-0004
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