340 return Tensor<Type_t, 3>(lhs(0, 0) * rhs(0, 0) + lhs(0, 1) * rhs(1, 0) + lhs(0, 2) * rhs(2, 0),
341 lhs(0, 0) * rhs(0, 1) + lhs(0, 1) * rhs(1, 1) + lhs(0, 2) * rhs(2, 1),
342 lhs(0, 0) * rhs(0, 2) + lhs(0, 1) * rhs(1, 2) + lhs(0, 2) * rhs(2, 2),
343 lhs(1, 0) * rhs(0, 0) + lhs(1, 1) * rhs(1, 0) + lhs(1, 2) * rhs(2, 0),
344 lhs(1, 0) * rhs(0, 1) + lhs(1, 1) * rhs(1, 1) + lhs(1, 2) * rhs(2, 1),
345 lhs(1, 0) * rhs(0, 2) + lhs(1, 1) * rhs(1, 2) + lhs(1, 2) * rhs(2, 2),
346 lhs(2, 0) * rhs(0, 0) + lhs(2, 1) * rhs(1, 0) + lhs(2, 2) * rhs(2, 0),
347 lhs(2, 0) * rhs(0, 1) + lhs(2, 1) * rhs(1, 1) + lhs(2, 2) * rhs(2, 1),
348 lhs(2, 0) * rhs(0, 2) + lhs(2, 1) * rhs(1, 2) + lhs(2, 2) * rhs(2, 2));