A rank-one logarithmic spectral instability appears in each symmetry block of the renormalized mixed Hessian of the dispersionless Toda τ-function near transversal subcritical approaches to simple analytic critical points.
Fredholm eigenvalue for a quasi-circle and Grunsky functionals
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Local Rank-One Logarithmic Instability for the Mixed Hessian of the Dispersionless Toda $\tau$-Function
A rank-one logarithmic spectral instability appears in each symmetry block of the renormalized mixed Hessian of the dispersionless Toda τ-function near transversal subcritical approaches to simple analytic critical points.