@Article{AAM-37-22, author = {Dong , Hongjie}, title = {A Simple Proof of Regularity for $C^{1,\alpha}$ Interface Transmission Problems}, journal = {Annals of Applied Mathematics}, year = {2021}, volume = {37}, number = {1}, pages = {22--30}, abstract = {

We give an alternative proof of a recent result in [1] by Caffarelli, Soria-Carro, and Stinga about the $C^{1,\alpha}$ regularity of weak solutions to transmission problems with $C^{1,\alpha}$ interfaces. Our proof does not use the mean value property or the maximum principle, and also works for more general elliptic systems with variable coefficients. This answers a question raised in [1]. Some extensions to $C^{1,\text{Dini}}$ interfaces and to domains with multiple sub-domains are also discussed.

}, issn = {}, doi = {https://doi.org/10.4208/aam.OA-2020-0002}, url = {http://global-sci.org/intro/article_detail/aam/18629.html} }