Gutlyanskii, V.Ya.; Nesmelova, O.V.; Ryazanov, V.I.
(Український математичний вісник, 2019)
In two dimensions, we present a new approach to the study of the semilinear equations of the form div[A(z)∇u] = f(u), the diffusion term of which is the divergence uniform elliptic operator with measurable matrix functions ...