I am interested in mathematics, especially in (discrete) probability theory and combinatorics. Here you find some mathematical stuff I wrote at somewhen.
Here you can find a short article about a very nice puzzle. The task is to construct a good strategy with a high winning probability (greater 30%), even though one could think that only a chance of less than 0.05% is possible. It is written in german
This is a short excersise sheet for circles. Written in German ("Aufgaben zum Kreis").
Here I collected some excersises concerning logarithms. Written in German ("Logarithmusaufgaben").
This is a collection for parabola excerses, also in German ("Parabelaufgaben").
A graph theoretic problem from Monday Math Madness.