**Speaker / Predavač**

**Miloš Stojaković, Prirodno-matematički fakultet, Novi Sad**

**Naslov / Title**

Many collinear k-tuples with no k+1 collinear points

**Sažetak / Abstract**

Paul Erdos asked the following question in the 60's: How many collinear k-tuples can a planar n-point set contain, if it contains no k+1 points on a line? (k>3, fixed) We will present an elementary construction that significantly improves the previously known lower bound for this value.

**date/vreme**: 28/11/2017 13h

**venue/mesto**: SALA ZA SASTANKE, KULA FTN 3.SPRAT.