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Sum of Squares Decompositions and Rank Bounds for Biquadratic Forms.

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Bibliographic Details
Title: Sum of Squares Decompositions and Rank Bounds for Biquadratic Forms.
Authors: Qi, Liqun1 (AUTHOR), Cui, Chunfeng2 (AUTHOR) chunfengcui@buaa.edu.cn, Xu, Yi3,4,5 (AUTHOR)
Source: Mathematics (2227-7390). Feb2026, Vol. 14 Issue 4, p635. 16p.
Database: Academic Search Ultimate
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ISSN:22277390
DOI:10.3390/math14040635