## Speaker:

Sanjay Kumar Singh
School of Mathematics
Tata Institute of Fundamental Research
Homi Bhabha Road
Mumbai 40000

## Time:

Friday, 24 July 2009 (All day)

## Venue:

- A-212 (STCS Seminar Room)

The classification theorem of closed surfaces states that any closed surface is homomorphic to some member of one of these three families:

1. the sphere

2. the connected sum of n tori

3. the connected sum of k real projective planes