[slava lazarev <lazv85 at mail.ru>, Fri, 28 Apr 2006 19:24:54 +0400]: > hello, may be i'm not first, but i find bug: example A - matrix, User bug: (%i2) matrix([1,1],[1,1])^^0; [ 1 0 ] (%o2) [ ] [ 0 1 ] (%i3) matrix([1,1],[1,1])^^-1; Singular -- an error. Quitting. To debug this try debugmode(true); Albert.