On the anisotropic critical $p$-Laplace equation: classification, decomposition, and stability results

We investigate both qualitative and quantitative issues related to the classification of non-negative energy solutions to the anisotropic critical $p$-Laplace equation in ${\mathbb{R}}^n$, for $1<p<n$. Specifically, we establish an anisotropic version of Struwe’s decomposition, along with the interaction estimate for the family of bubbles in this decomposition. Moreover, we provide a short proof of the classification result as well as a quantitative stability result, proving that every energy solution to a perturbation of the anisotropic critical equation must be closed to a bubble, in the absence of bubbling.