Date of Degree
PhD (Doctor of Philosophy)
W1,p estimate for the solutions of elliptic equations whose coefficient matrix can have large jump along the boundary of subdomains is obtained. The principal coefficients are supposed to be in the John-Nirenberg space with small BMO seminorms. The domain and subdomains are Reifenberg flat domains and moreover, it has been shown that the estimates are uniform with respect to the distance between the subdomains.
BMO, Elliptic, Reifenberg, Singular coefficients
Copyright 2010 Ko Woon Um