bhk_irrational: Change wording to indicate that minimality is not guaranteed.

Author: yuan-zhou

extreme_functions_in_literature.sage

@@ -794,7 +794,7 @@ def bhk_irrational(f=4/5, d1=3/5, d2=1/10, a0=15/100, delta=(1/200, sqrt(2)/200)
         logging.info("Conditions for extremality are NOT satisfied.")
     elif len(delta) == 2:
         if is_QQ_linearly_independent(delta) and  2*delta[0] + delta[1] < d2 / 2:
-            logging.info("Conditions for extremality are satisfied.")
+            logging.info("Conditions for extremality are satisfied if it is a minimal function.")
         else:
             logging.info("Conditions for extremality are NOT satisfied.")
     else: