@article{Zhu2025, 
author = {Yuzhe Zhu},
title = {Propagation of smallness for solutions of elliptic equations in the plane},
year = {2025},
journal = {Mathematics in Engineering},
volume = {7},
number = {1},
pages = {1-12},
keywords = {propagation of smallness, 2D elliptic equations, low regularity coefficients, quasiregular mapping, spectral inequality},
url = {https://www.sciopen.com/article/10.3934/mine.2025001},
doi = {10.3934/mine.2025001},
abstract = {We explore quantitative propagation of smallness for solutions of two-dimensional elliptic equations from sets of positive    δ-dimensional Hausdorff content for any    δ  >  0. In particular, the gradients of solutions to divergence form equations with Hölder continuous coefficients, as well as those of nondivergence form equations with measurable coefficients, can be quantitatively estimated from the small sets.}
}