Double phase problems in elliptic equations represent a significant evolution in the study of nonlinear differential operators, characterised by the presence of two distinct growth phases within the ...

The Royal Society is a self-governing Fellowship of many of the world's most distinguished scientists drawn from all areas of science, engineering and medicine, and is the oldest scientific academy in ...

ABSTRACT. We present a comparison among the performance of solvers based on Nyström discretizations of several well-posed boundary integral equation formulations of Helmholtz transmission problems in ...