Update src/sage/rings/function_field/drinfeld_modules/finite_drinfeld…

…_module.py Co-authored-by: Xavier Caruso <xcaruso@users.noreply.github.com>
kryzar · Aug 9, 2024 · b632a75 · b632a75
1 parent 01e5889
commit b632a75
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/sage/rings/function_field/drinfeld_modules/finite_drinfeld_module.py b/src/sage/rings/function_field/drinfeld_modules/finite_drinfeld_module.py
@@ -467,8 +467,8 @@ def frobenius_charpoly(self, var='X', algorithm=None):
         method_name = f'_frobenius_charpoly_{algorithm}'
         if not hasattr(self, method_name):
             raise NotImplementedError(f'algorithm "{algorithm}" not implemented')
-        self._frobenius_charpoly = getattr(self, method_name)(var)
-        return self._frobenius_charpoly
+        self._frobenius_charpoly = getattr(self, method_name)
+        return self._frobenius_charpoly.change_variable_name(var)
 
     @cached_method
     def _frobenius_charpoly_CSA(self, var='X'):