Numerical ranges of even-order tensor
Publish place: The 11th Seminar on Linear Algebra and its Applications
Publish Year: 1400
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
SLAA11_007
تاریخ نمایه سازی: 16 اسفند 1401
Abstract:
In this paper, the numerical range of an even-order tensor is de ned using the norm ofits square matrix unfolding. The basic properties of the numerical range of a matrix, suchas compactness and convexity, are proved to hold for the numerical range of an even-ordertensor. Also, we introduce normal tensors based on the contraction product. According tothe Tucker decomposition, we get the numerical range of a normal tensor. Next, we introducethe singular-value decomposition (SVD) of an even-order tensor. Using this decomposition,we obtain the numerical range of such a tensor.
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Authors
Mehri Pakmanesh
Department of Mathematics, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran.
Hamid Reza Afshin
Department of Mathematics, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran.