Chunfeng Cui

activity

20142026

most citedAll Real Eigenvalues of Symmetric Tensors

4 citations · 5 across the 26 of their papers we have counts for

collaborators

Showing 2026 · math.OCShow all

2 papers · 2 filters

math.OC2026

Sum of Squares Rank of Biquadratic Forms and The Zarankiewicz Number

Chunfeng Cui, Liqun Qi, Yi Xu

Denote the maximum sos rank of $m \times n$ sum of squares (SOS) biquadratic forms by $B S R (m, n)$ . In this paper, we show that $B S R (m, n) \geq z (m, n)$ and conjecture that $BSR(m, n…

math.OC2026

Sum of Squares Decompositions and Rank Bounds for Biquadratic Forms

Liqun Qi, Chunfeng Cui, Yi Xu

We study SOS properties of biquadratic forms. For the class of partially symmetric biquadratic forms, we establish necessary and sufficient conditions for positive semi-definitenes…