I tried in Maple because I have never used Mathematica.

I see it is better for this kind of problems.

You don't know how much you helped me. This recurrence stressed me a lot last couple of days.

Do you think I could resolve a multivariate recurrence like Lemma1 (page 5) from the same article?

Thank you so much.

Best wishes and regards,

Raluca

Hi Raluca,

well, this is not Maple ...

You need to define an equation, i.e. it should read after RSolve x[t+1] == a[t] ... In a notebook both operators (= and ==) look very similar.

Regarding your question on multivariate recurrence: I may be completely wrong, but to me this seems equivalent to your first problem. In the solution there is nowhere stated that every element needs to be a scalar.

Regards -- Henrik