Many thanks for your reply. I installed Sagemath using the SageMath-8.5-Installer-v0.4.1. downloaded from the Sagemath homepage.
Yes, I mean the MS-DOS prompt. I examined it to be sure that maple exists in the path (perhaps a wrong examination!) -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
