## Blog

##### Workshops @ BRG Viktring: Von Büchern, Tauben und den Türmen von Hanoi

Es war mir eine große Freude, wieder einmal in meine alte Schule, dem Bundesrealgymnasium Klagenfurt-Viktring zurückzukehren um Mathematik-Workshops mit allen siebenten Klassen abzuhalten.

Read more...##### Talk @ AofA18: Counting Ascents in Generalized Dyck Paths

Last week I participated at AofA18 in Uppsala, Sweden and gave a talk on Friday.

Read more...##### Goodbye Wordpress, Hello Jekyll!

I am currently in the process of migrating my old Wordpress site to a collection of static pages, generated by Jekyll. I am migrating because of the following reasons:

Read more...##### Talk: Ascents in Non-Negative Lattice Paths

Today, in the last week of my four week research stay at Stellenbosch University, I gave a talk on a recent cooperation with Clemens Heuberger and Helmut Prodinger.

Read more...##### Seminar: Analysis of a Growth Process for Plane Trees

This week I am giving a two-part talk series in Mark Ward’s informal seminar on Analytic Combinatorics at Purdue University.

Read more...##### Schulvortrag @ BRG Viktring

Es war mir eine besondere Freude, heute in meiner ehemaligen Schule, dem BRG Viktring, einen Vortrag aus Mathematik vor den 7. Klassen halten zu dürfen.

Read more...##### Summer School: Techniques in Random Discrete Structures

I’m currently in Athens at the summer school “Techniques in Random Discrete Structures”, where I am responsible for the exercise sessions.

Read more...##### Talk: On Reductions of Plane Trees

I’m currently visiting my mentor Helmut Prodinger at Stellenbosch University in South Africa, and today I gave a talk in the local colloquium.

Read more...##### Talk @ ANALCO17: Iterative Cutting and Pruning of Planar Trees

I gave a talk at the 2017 Meeting on Analytic Algorithmics and Combinatorics (ANALCO17).

Read more...##### Mathematik-Seminar der Hans-Riegel-Stiftung

Today I held an invited workshop on combinatorics and the symbolic method at the Mathematical Institute of Bonn University (Bonn, Germany) for alumni who received a “Hans-Riegel-Fachpreis”.

Read more...##### Talk @ AEC2016: On Reductions of Rooted Plane Trees

Today I gave a talk at AEC Summerschool 2016 at JKU’s Research Institute for Symbolic Computation (RISC) in Hagenberg, Austria.

Read more...##### Talk @ AofA16: The Register Function and Reductions of Binary Trees and Lattice Paths

On July 8, I gave a contributed talk at this years 27th edition of the International Conference on Probabilistic, Combinatorial and Asymptotic Methods for the Analysis of Algorithms (AofA’16), which took place in Kraków, Poland.

Read more...##### Talk: On a Reduction of Lattice Paths

Today I gave a talk at Stellenbosch University (South Africa) presenting my current research on a reduction procedure for two-dimensional lattice paths consisting of the four steps up, right, down, left.

Read more...##### Jupyterhub with SageMath Kernel

Recently I made some efforts to get a Jupyterhub instance with a SageMath kernel up and running on one of my servers — with success! 🙂 Actually, the installation is really not that difficult. Nevertheless, I want to write a few lines describing the troubles I ran into and my solutions.

Read more...##### Google Summer of Code 2015: Conclusion

The “Google Summer of Code 2015” program has ended yesterday, on the 21. of August at 19.00 UTC. This blog entry shall provide a short wrap-up of our GSoC project.

Read more...##### Asymptotic Expressions: Current Developments

Since my last blog entry on the status of our implementation of Asymptotic Expressions in SageMath quite a lot of improvements have happened. Essentially, all the pieces required in order to have a basic working implementation of multivariate asymptotics are there. The remaining tasks within my Google Summer of Code project are:

Read more...##### Computing with Asymptotic Expressions

It has been quite some time since my last update on the progress of my Google Summer of Code project, which has two reasons.

Read more...##### House(s) of Cards

When I sat at our family dinner on Saturday, I watched my cousin build a house of cards from coasters. At one point he said to me: “I want to build a reeeally tall house of cards. One with like 100 levels! Do you think we could collect enough coasters from the tables around here?”. The question got me interested, and so I decided to do some counting.

Read more...##### Asymptotic Expressions: Motivation

So, as Google Summer of Code started on Monday, May 25th it is time to give a proper motivation for the project I have proposed. The working title of my project is **(Multivariate) Asymptotic Expressions**, and its overall goal is to bring *asymptotic expressions* to SageMath.

##### Algebraic Function Fields of Genus 0

In this post I want to discuss the exercises from our Algebraic Curves course I worked on (and struggled with) last week.

Read more...##### Google Summer of Code — Countdown

Today I received the welcome package for attending this year’s “Google Summer of Code”! Actually, it’s pretty cool; the following things were included:

Read more...