**Date & Time:** Tuesday, September 16, 2008, 15:00- 16:00.

**Venue:** Ramanujan Hall

**Title:** Some Results on *R*-subalgebras of *R[X]*

**Speaker:** Amartya K. Dutta, ISI Kolkota

**Abstract:** If *k* is a field, it is well-known that
(i) any *k*-subalgebra *A* of *k[X]* is finitely generated; and (ii) if, further, *A* is normal,
then *A* is a polynomial algebra over *R*.
In this talk we shall discuss how far the above results hold for an
*R*-subalgebra *A*
of the polynomial algebra *R[T]* over a Noetherian domain *R*.