Anisotropic KPZ conjecture for two-dimensional interface growth
Anisotropic KPZ conjecture. If the Hessian matrix D2v(ρ)D^2v(\rho)D2v(ρ) has two eigenvalues of the same sign, equivalently if det(D2v(ρ))>0\det(D^2v(\rho))>0det(D2v(ρ))>0, then
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