$\vec{w}h\alpha\mathfrak{t}\;\; i\mathbb{S}\ldots$

a Catalan number?

Jean-Philippe Labbé (Technische University Berlin)
2010/10/22, 14:00
Before the BMS Friday Colloquium by Prof. Don Zagier
Urania Berlin, at the BMS Loft (3rd floor)
About what?

Catalan numbers form a sequence of natural numbers that counts a plethora of objects in mathematics. Thus, they appear constantly in enumerative combinatorics and many related fields like algebra, discrete geometry, representation theory and more. I will present their origin, discuss about some recursive and closed formulas and finally show some objects that are counted by Catalan numbers.