The quadratic spectral containment conjecture for multiaffine stable polynomials

A homogeneous multiaffine stable polynomial is a stable polynomial that is homogeneous and multiaffine. Quadratic spectral containment conjecture. Every quadratic homogeneous multiaffine stable polynomial has the spectral containment property. This is highlighted as a potentially tractable special case because quadratic multiaffine polynomials have especially simple minor lifts; no proof or counterexample is given.