diff -r fbdee8e4a78d -r f248f9848c87 src/delta.rs
--- a/src/delta.rs	Thu Dec 04 14:36:22 2025 -0500
+++ b/src/delta.rs	Fri Jan 16 14:09:45 2026 -0500
@@ -76,7 +76,7 @@
 where
     Domain: Space,
     G::Codomain: Mul<F, Output = G::Codomain>,
-    G: Mapping<Domain> + Clone + ClosedSpace,
+    G: Mapping<Domain> + ClosedSpace,
     for<'b> &'b Domain: Instance<Domain>,
 {
     type Codomain = G::Codomain;
@@ -91,7 +91,7 @@
 where
     Domain: Space,
     G::Codomain: Mul<F, Output = G::Codomain>,
-    G: Mapping<Domain> + Clone + ClosedSpace,
+    G: Mapping<Domain> + ClosedSpace,
     for<'b> &'b Domain: Instance<Domain>,
 {
 }