diff -r 411c6be29fe5 -r 997961aa6eee src/linops.rs
--- a/src/linops.rs	Mon Apr 28 09:08:45 2025 -0500
+++ b/src/linops.rs	Mon Apr 28 16:52:15 2025 -0500
@@ -357,6 +357,7 @@
 }
 
 /// “Row operator” $(S, T)$; $(S, T)(x, y)=Sx + Ty$.
+#[derive(Clone, Copy, Debug, Serialize, Eq, PartialEq)]
 pub struct RowOp<S, T>(pub S, pub T);
 
 use std::ops::Add;
@@ -419,6 +420,7 @@
 }
 
 /// “Column operator” $(S; T)$; $(S; T)x=(Sx, Tx)$.
+#[derive(Clone, Copy, Debug, Serialize, Eq, PartialEq)]
 pub struct ColOp<S, T>(pub S, pub T);
 
 impl<A, S, T> Mapping<A> for ColOp<S, T>
@@ -561,6 +563,7 @@
 }
 
 /// Diagonal operator
+#[derive(Clone, Copy, Debug, Serialize, Eq, PartialEq)]
 pub struct DiagOp<S, T>(pub S, pub T);
 
 impl<A, B, S, T> Mapping<Pair<A, B>> for DiagOp<S, T>