I have a masters degree in mathematics with specialization in algebra, number theory and lattice algorithms.

Now I'm a PhD student in algorithm engineering at Goethe University Frankfurt, working on graph algorithms coding mostly in C++.

I'm also the developer of Sephpa and SepaUtilities, two PHP libraries to generate SEPA files.

Since I'm currently working at a university and so am involved in some teaching, I sometimes find some (of our) homework questions here, especially in big-o. I try to answer such questions only if they are older than a week or two, so the homework was already due.