**ha@fisher.UUCP (Ha Nguyen)** (06/28/85)

I am interested in finding n _ __ _ -1 | \ | | A - a /__ x(i). t(x(i)) | |_ i=1 _| where A : pxp non-singular, symmetric matrix x(i) : p-column vetctor t(x(i)) : transpose of x(i). a : real constant For n=1, the above expression can be expressed in terms of A inverse,x,t(x). Does anybody know whether a close form exists for n>1 ? Any reference or hint will be greatly appreciated. Thanks in advance. ha