--- a/src/direct_product.rs Mon May 12 20:40:14 2025 -0500 +++ b/src/direct_product.rs Mon May 12 23:29:17 2025 -0500 @@ -561,4 +561,8 @@ B: HasDual<F>, { type DualSpace = Pair<A::DualSpace, B::DualSpace>; + + fn dual_origin(&self) -> <Self::DualSpace as AXPY>::Owned { + Pair(self.0.dual_origin(), self.1.dual_origin()) + } }