2 papers
math.OC2026
Biquadratic Cauchy Tensors and Spherical Biquadratic Polynomial Programming
Haibin Chen, Yixuan Chen, Liqun Qi
This paper addresses biquadratic polynomial programming (BPP), an NP-hard optimization problem closely related to biquadratic tensors. We first establish several necessary and suff…
math.RA2025
Completely Positive Biquadratic Tensors
Liqun Qi, Chunfeng Cui, Haibin Chen +1
In this paper, we systemically introduce completely positive biquadratic (CPB) tensors and copositive biquadratic tensors. We show that all weakly CPB tensors are sum of squares te…