Jh. Shi, BERGMAN TYPE OPERATORS ON A CLASS OF WEEKLY PSEUDOCONVEX DOMAINS, Science in China. Series A, Mathematics, Physics, Astronomy & Technological Sciences, 41(1), 1998, pp. 22-32
A necessary and sufficient condition for the boundedness of the operat
or: (T(s,u,v)f)(xi)=h(u+v/a)(xi)integral(Omega a)h(s)(xi')K-s,K-u,K-v(
xi,xi')f(xi')dv(xi') on L-p(Omega(a),dv(lambda)),1 < p < infinity, is
obtained, where Omega(a)={xi=(z,w)is an element of Cn+m:z is an elemen
t of C-n, w is an element of C-m, \z\(2)+\w\(2)/a<1}, h(xi)=(1-\z\(2))
(a)-\w\(2) and K-x,K-u,K-v(xi,xi'). This generalizes the works in lite
rature from the unit ball or unit disc to the weakly pseudoconvex doma
in Omega(a). As an application, it is proved that f is an element of L
-H(p)(Omega(a),dv lambda) implies h(\a\/a+\beta\)(xi)D-2 alpha D-z bet
a f is an element of L-p(Omega a,dv lambda),1 less than or equal to p
< infinity, for any multi-index alpha=(alpha(1),...,alpha(n)) and beta
=(beta(1),...,beta(n)). An interesting question is whether the convers
e holds.