Introduces 3-edges and generalized cycle-free conditions to prove that SOS rank equals total edge count for triply simple biquadratic forms and applies the method to improve lower bounds on z_3L and BSR.
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Three-Edges and the SOS Rank of Biquadratic Forms
Introduces 3-edges and generalized cycle-free conditions to prove that SOS rank equals total edge count for triply simple biquadratic forms and applies the method to improve lower bounds on z_3L and BSR.