Results 31 to 40 of about 914,477 (196)

Tensor structure for Nori motives

open access: yes, 2019
We construct a tensor product on Freyd's universal abelian category attached to an additive tensor category or a tensor quiver and establish a universal property.
Barbieri-Viale, Luca   +2 more
core   +1 more source

Reconstruction of the primordial power spectra with Planck and BICEP2 [PDF]

open access: yes, 2014
By using the cubic spline interpolation method, we reconstruct the shape of the primordial scalar and tensor power spectra from the recently released {\it Planck} temperature and BICEP2 polarization cosmic microwave background data.
Cai, Rong-Gen   +3 more
core   +3 more sources

A Modified GMRES Method for Solving a Symmetric Solution to Lyapunov Equation for Multi-Agent Systems

open access: yesSICE Journal of Control, Measurement, and System Integration, 2019
We consider solving a large-scale Lyapunov equation for a multi-agent system. As is well known, the Lyapunov equation can be solved by equivalently rewriting it as a system of linear equations.
Asuka Ohashi, Kiyotsugu Takaba
doaj   +1 more source

Shape-Adaptive Tensor Factorization Model for Dimensionality Reduction of Hyperspectral Images

open access: yesIEEE Access, 2019
Tensor-based dimensionality reduction (DR) of hyperspectral images is a promising research topic. However, patch-based tensorization usually adopts a squared neighborhood with fixed window size, which may be inaccurate in modeling the local spatial ...
Zhaohui Xue, Sirui Yang, Mengxue Zhang
doaj   +1 more source

Block Row Kronecker-Structured Linear Systems With a Low-Rank Tensor Solution

open access: yesFrontiers in Applied Mathematics and Statistics, 2022
Several problems in compressed sensing and randomized tensor decomposition can be formulated as a structured linear system with a constrained tensor as the solution.
Stijn Hendrikx   +3 more
doaj   +1 more source

Tensor Transpose and Its Properties [PDF]

open access: yes, 2014
Tensor transpose is a higher order generalization of matrix transpose. In this paper, we use permutations and symmetry group to define? the tensor transpose. Then we discuss the classification and composition of tensor transposes.
Pan, Ran
core  

Matrix Polynomial Predictive Model: A New Approach to Accelerating the PARAFAC Decomposition

open access: yesIEEE Access, 2019
Alternating least squares (ALS) and its variations are the most commonly used algorithms for the PARAFAC decomposition of a tensor. However, it is still troubled for one how to accelerate the ALS algorithm with the reduced computational complexity.
Ming Shi, Dan Li, Jian Qiu Zhang
doaj   +1 more source

$SDD_1$ tensors and $B_1$-tensors

open access: yesThe Electronic Journal of Linear Algebra
Strong $\mathcal{H}$-tensors play an important role in the fields of science and engineering. In this paper, we first propose a new subclass of strong $\mathcal{H}$-tensors that we call the class of $SDD_1$ tensors. We also prove that if a tensor is an $SDD_1$ tensor, it is a strong $\mathcal{H}$-tensor. As an application, a sufficient condition for an
Weiting Duan, Dekun Wen, Yaqiang Wang
openaire   +1 more source

Vector‐Tensor Multiplets [PDF]

open access: yesFortschritte der Physik, 1998
We review the coupling of N=2 supergravity to vector-tensor multiplets, based on the method of superconformal multiplet calculus.
P. Claus   +6 more
openaire   +3 more sources

Nonnegative Tensor Factorization, Completely Positive Tensors and an Hierarchical Elimination Algorithm [PDF]

open access: yes, 2013
Nonnegative tensor factorization has applications in statistics, computer vision, exploratory multiway data analysis and blind source separation. A symmetric nonnegative tensor, which has a symmetric nonnegative factorization, is called a completely ...
Qi, Liqun, Xu, Changqing, Xu, Yi
core  

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