Postdoc Position in Aalborg

Lisbeth Fajstrup needs a postdoc in Aalborg Denmark for a project on Nanoporosity of Amorphous materials using TDA.
The project requires understanding of TDA and moreover computational skills – to implement the new ideas.


What we offer:
We offer a postdoc position within the Department of Mathematical Sciences as part of the project “Deciphering Nanoporosity of Amorphous Materials using Topological Data Analysis”. The selected candidate will be conducting research supervised by Lisbeth Fajstrup and Christophe A.N. Biscio and in collaboration with the Department of Chemistry and Bioscience to find new topological descriptors of porosity. The selected candidate will visit Lawrence Berkeley National Laboratory, USA for 4 months to collaborate with Staff Scientist Dmitriy Morozov.

What we request:
The selected candidate will hold a PhD in Mathematics or a related field and will have promising research results within Topological Data Analysis, Computational Topology or related subjects.
The project to which the postdoc will contribute involves developing new computational topological methods to describe variations of the free volume and in particular tunnels in amorphous materials and implementation of such insight as a tool. This will require a strong background in Topological Data Analysis either computational or theoretical.

Salary and benefits
Please contact International Staff Unit for information regarding salary and taxes. Courses in Danish will be offered if needed.

Working and living in Aalborg and Denmark
The city of Aalborg is lively with a wide variety of music and cultural events, top notch restaurants, fresh air and easy access to natural parks, forests, and great beaches.

As employee at Aalborg University you will obtain health insurance as a resident of Denmark, this also includes family members officially residing in Denmark.

Deadline for application is Jun 9th.

More information at the end of the link below.

New Slack channel for basic geometry & topology questions

We added a new channel for basic geometry & topology questions to the popular Slack workspace “Geometry & Topology in ML”. Despite the name of the workspace, there is no machine learning background needed for this particular channel. We are looking forward to your questions and answers. 

To see/write messages in this new channel, you need to join the whole Slack workspace “Geometry & Topology in ML”: Invite link
You can afterwards subscribe/unsubscribe to/from the various channels according to your interest.

Example questions:

  1. Why do we need assumption X in Theorem Y? What would be a counterexample?
  2. What is a good reference for reading up on a sheaf theoretic approach to persistent homology?
  3. I read about algorithm X, and understand every line, but lack intuition: What is the big picture idea behind it?

We hope this new channel will be a nice addition to the already existing geometry and topology Q&As (This list undoubtedly has unintentional omissions; please let us know if you have recommended additions): (with different tags for different sub-fields of mathematics), 
– The ALGTOP-L discord: 
– There are a variety of webpages and list-servs, such as, ALGTOP-L, WinCompTop, compgeom-announce, that sometimes have geometry and topology Q&As, but are more focused on announcements (conferences, job postings, etc).

We want to encourage people who are rather new to (applied/computational) geometry and topology, in particular, to ask questions!

Best wishes,
Bastian Rieck, Niklas Hellmer, Teresa Heiss

AATRN poster session

Dear applied topologists,

We (Henry, Antonio, Hanka, Teresa) are organizing open poster sessions via Zoom, with the intention of giving a platform to younger members of our community to showcase their work, as well as a place for everyone to present their most recent research results. Topics of interest will span the full range of applied and computational topology.

The webpage for the poster sessions is at

The sessions will be two hours long, and our first poster session will take place on Friday, October 8th, 2021 at 11am Eastern time. To submit a title and abstract, by September 24 please fill out the registration form at

Zoom coordinates and the website with the program will be sent out to the AATRN email list several days before each poster session.

Best wishes,
Henry Adams, Hana Dal Poz Kouřimská, Teresa Heiss, Antonio Rieser