[Boost-users] BOOST-UBLAS: how to implement A.B.A^t operation.

Hello, I would like to calculate for B=NxN matrix and A=N vector following operation: RES= A (dot)* *B (dot) A^T using namespace boost::numeric::ublas; matrix<double> B (2, 2); matrix<double> A(1, 2); // this works when I do step by step matrix<double> res=prod(A,B); res=prod(res,trans(B)); // but this does not compile res=prod(prod(A,B),trans(A)) // it gives error error C2027: use of undefined type 'boost::STATIC_ASSERTION_FAILURE<x>' So what is the difference with previous? Thanks Arman.