From 1d4b33b50c821fefa2e0fe3e576f8bd80dba3869 Mon Sep 17 00:00:00 2001
From: Jiri Pittner <jiri@pittnerovi.com>
Date: Tue, 27 Oct 2026 19:15:37 +0100
Subject: [PATCH] a formal fix of forbidden operator

---
 polynomial.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/polynomial.h b/polynomial.h
index 49ff8d5..8b5e24a 100644
--- a/polynomial.h
+++ b/polynomial.h
@@ -231,7 +231,7 @@ return r;
 template <typename T>
 inline Polynomial<T> operator+(const T &a, const Polynomial<T> &rhs) {return Polynomial<T>(rhs)+=a;}
 template <typename T>
-inline Polynomial<T> operator-(const T &a, const Polynomial<T> &rhs) {return Polynomial<T>(rhs)-=a;}
+Polynomial<T> operator-(const T &a, const Polynomial<T> &rhs) = delete; //deliberately not available, write -p + a
 
 //Sylvester matrix
 template <typename T>