Draft book: “Algebra and Topology for Data Analysis”

Hal Schenck from Auburn University would like to share his draft book Algebra and Topology for Data Analysis with the community:


The book goes from linear algebra to spectral sequences, containing data applications interspersed throughout. The author is interested in any comments or feedback, so please shoot him an email after checking it out!

AATRN Topological Complexity Seminar

Dear colleagues,

With great pleasure we announce the launch of the AATRN Topological Complexity Seminar (AATRN-TCS).

The AATRN-TCS Fall session talks will be held once a month, on a Thursday, starting Thursday, Oct 22 at 10:30am Eastern. We will use the Zoom videoconferencing platform. Please take a look at the seminar web page for the schedule and speakers:


We are grateful to the Applied Algebraic Topology Research Network (AATRN) for supporting this online seminar. Regular reminders (and Zoom coordinates) for AATRN-TCS will be distributed through the AATRN mailing list, so please register as an AATRN member at

(if you have not already done so) to ensure receiving these reminders. As with regular AATRN activities, AATRN-TCS talks will also be available through the AATRN YouTube Channel.

Best wishes from the organizers,

Dan Cohen
Jesus Gonzalez
John Oprea

AATRN Inaugural Interview Series

AATRN is trying something new! Please see the attached poster advertising our inaugural interview series, featuring:

Herbert Edelsbrunner interviewed by Dmitriy Morozov, September 30, 2020, 1pm Eastern

Vanessa Robins interviewed by Elizabeth Bradley, November 18, 2020, 5pm Eastern

Gunnar Carlsson interviewed by Vin de Silva, February 3, 2021, 11am Eastern

Massimo Ferri interviewed by Claudia Landi, April 21, 2021, 11am Eastern

For the zoom coordinates, please become an AATRN member at https://topology.ima.umn.edu, or else email the AATRN directors at aatrn.director@gmail.com. You may find recordings of our prior videos at https://www.youtube.com/c/AppliedAlgebraicTopologyNetwork

Best, Henry Adams, Sara Kalisnik, and Elchanan Solomon

Tenure-track positions in machine learning and statistical learning at Umeå University

We are advertising two similar positions, one broad position in machine learning and one more focused position in nonconvex inference and learning. Both positions allow for independent research and come with generous start-up packages for setting up a research group. See:




We very much welcome applicants with mathematical/statistical backgrounds and interests.

With our very best wishes,

Åke Brännström & Jun Yu

Online workshop: Optimal transport, topological data analysis and applications to shape and machine learning

Dear all,

We wanted to bring to your attention an upcoming workshop — July 27 to
July 31 — on applied topology, optimal transport and machine learning.
These are rapidly-developing verticals with budding interactions that
some of you might find interesting. The workshop will be entirely
online, and hosted through MBI-Ohio State. More information on events,
schedule and how to register can be found here:


Hope to see you there.

Jose Perea
Facundo Memoli
Tom Needham
Nicolas Garcia-Trillos

Subset of ATMCS talks hosted online by AATRN

Unfortunately, the ATMCS (Algebraic Topology: Methods, Computation, and Science) conference will not be happening in 2020. However, a subset of early-career ATMCS talks will be hosted in an online summer seminar series by AATRN (Applied Algebraic Topology Research Network). These talks were contributed and accepted for ATMCS, but this is not going to be ATMCS itself.

For a list of these ATMCS talks hosted by AATRN, please see our webpage:
The majority of the talks will be on Mondays at 11am-12pm Eastern Times, starting Monday, May 25. We will have two speakers per week, with each speaker giving a 20 minute talk. The first speakers (on Monday, May 25) are Vincent Divol and Théo Lacombe, on Studying the space of Persistence Diagrams using Optimal Partial Transport.

If you want to attend these talks, then please become an AATRN member by clicking on the “members” tab at https://topology.ima.umn.edu/. We will send out one announcement email to all AATRN members per talk, including information for how to join the talk on Zoom. You will receive an email with the Zoom details for our first May 25 talk either later today, or within a day after you first join the network. If you have any difficulties joining or obtaining the Zoom details (or for example want the Zoom details for the first talk before becoming an AATRN member), then please send an email to aatrn.director@gmail.com.

Henry Adams and Sara Kalisnik, AATRN
Ulrich Bauer and Claudia Landi, ATMCS

PhD position in TDA at KTH

The TDA group of KTH is currently hiring a PhD student. This position, based at the Mathematics department of KTH, has deadline 23-rd April and is sponsored by the WASP program (https://wasp-sweden.org/). The successful candidate will be supervised by Martina Scolamiero and Wojciech Chacholski.  She or he will work with us and our group on various research topics, including: identifying stable invariants for generalized persistence, studying metrics between persistence modules, understanding statistical properties and applicability to Machine Learning of topological invariants. Furthermore the successful candidate will be offered courses in A.I through the WASP graduate school and have various interactions with machine learning experts and industry through WASP conferences and field trips. More information on the position and a link to apply can by found here:https://www.kth.se/profile/scola/. If you have any question don’t hesitate to contact Martina at the address: scola@kth.se

Computational Geometry: Media Exposition — First Announcement

Please see the call below. Notice that this media track has expanded its definition to have a wider scope this year. We welcome your submissions!

Here is the corresponding webpage:


Computational Geometry: Media Exposition — First Announcement

Media, Visualizations, and Geometric Art are sought for the 29th International Computational Geometry Media Exposition (CG:ME), which will take place as part of Computational Geometry Week 2020, encompassing the 35th International Symposium on Computational Geometry. Submissions showcase creative approaches to illustrate research and/or support education in computational geometry. 


All deadlines are 23:59 anywhere on earth.

  • February 21, 2020 Abstract and media portfolio submissions due
  • March 8, 2020 Notification of acceptance/rejection
  • March 30, 2020 Final version of abstract and portfolio
  • June 23-26, 2020 Computational Geometry Week


  • The submission should be related to computational geometry, broadly interpreted, but is otherwise unrestricted: for example, it can illustrate a (new or existing) concept, technique or algorithm from computational geometry, it can explain an application of computational geometry, it can be meant for educational purposes or for entertainment purposes, and so on. 
  • The form of media is broad, including algorithm animations, interactive software and games, scientific artwork, sculptures, paintings, and virtual reality demonstrations. While videos are welcome, they are no longer required as in previous years.


A submission consists of two parts: a portfolio and a paper.

  • Submit a portfolio of the work, such as images, video, link to interactive apps, etc.  The submission should still be “displayable” during CGweek, and the authors should specify in their submission how the piece will be displayed. For example, if it is about a geometry-inspired sculpture, then one can bring the sculpture itself, or submit a video about this sculpture, its story and its connection to computational geometry. Note that if your work is a video, then the portfolio and the work are in fact identical.
  • Submit a paper which details the portfolio and where applicable, the techniques used in the implementation. The paper should explain the connection of the submission to computational geometry, broadly interpreted.  
  • Acceptance is based on both the submitted portfolio and the accompanying paper.

Technical Details

  • Portfolio submissions are limited to 100 MB. Authors are free to post higher quality versions on their own web sites, and we will include links in the electronic proceedings to their version, in addition to the official version (<100 MB) archived on http://www.computational-geometry.org
  • Videos should be 720p or better, using H.264, where the embedded audio stream should be AAC of at least 128kBit/s.
  • The paper must be formatted according to the guidelines for the conference proceedings using the LIPIcs format, and not exceed 100 lines, excluding front matter and references.  The number of images in the paper should also be kept reasonable. Typesetting instructions and the .cls style file are available on the CG website: http://www.computational-geometry.org


  • The Work will be on display at a gallery during Computational Geometry Week.  
  • The authors will have a session devoted to giving a short talk on their work at the Symposium on Computational Geometry.


  • Henry Adams, Colorado State University, USA
  • Jit Bose, Carleton University, Canada
  • Satyan Devadoss (chair), University of San Diego, USA
  • David Eppstein, University of California, Irvine, USA
  • John McCleary, Vassar College, USA
  • Marc van Kreveld, Utrecht University, Netherlands
  • Yusu Wang, The Ohio State University, USA
  • Lori Ziegelmeier, Macalester College, USA

Postdoc positions in Topological Data Analysis at KTH

The mathematics department at KTH offers up to two, two years, postdoc positions to join the Topological Data Analysis group. The TDA group currently consists of two faculty members: Wojciech Chacholski and Martina Scolamiero, one postdoc Rayan Ramanujan and three PhD students: Oliver Gavfert, Francesca Tombari and Alvin Jin. We work on a variety of topics including: studying the topology of decompositions of simplicial complexes, defining and computing stable invariants for multi-persistence, applications of TDA to machine learning and neuroscience. Furthermore KTH offers an inclusive and exciting atmosphere with plenty of opportunities to collaborate for example with the algebraic geometry group, researchers working on mathematical foundations of A.I, the Brummer & Partners MathDataLab and the WASP program. Although in the announcement it is stated that a PhD is required to apply, we are going to  consider applications of everyone who will graduate before the start of the position. 

The application deadline is 20 January 2020. For more information on the position and the application process please follow the link: 


Topology in data science – SUMTOPO 2019 – Johannesburg

We are reaching out to you on behalf the of the organizers of the 34th Summer Conference on Topology and its Applications. The NSF has just approved funding for some US participants to travel to the conference (July 1 – 4, 2019), especially students and early career faculty. This year, there is a session on topology in data science organized by Magnus Botnan (Vrije Univ.), Sara Kalisnik (Wesleyan), and Christian Lehn (TU Chemnitz).
If you know of any body that might be interested in attending our conference (particularly US based students, early career faculty, and members of under-represented groups), will you please pass along this information:
34th Summer Conference on Topology and its Applications
Johannesburg, South Africa, July 1 – 4, 2019

US based participants apply for funding here (decisions made by April 17)

Early registration by June 5, 2019Abstract submission by May 31, 2019
Thank you very much for your help. Information about sessions and speakers is copied below.


We inform you that registration is now open for the 34th Summer Conference on Topology and its Applications to be held 1-4 July 2019 at the University of the Witwatersrand, Johannesburg.

We kindly invite you to participate in the conference by giving a 20-25 minutes talk. Abstract submission is open until May 31, 2019.

The conference will feature the following special sessions:

1.   Topological Algebra and Analysis

Lydia Aussenhofer

Ahmed Bouziad

Salvador Hernandez

2.   Asymmetric Structures and Order

Tom Richmond

Josef Slapal

3.   Dynamics and Continuum Theory

Paul Bankston

Sergio Macias

4.   Set-Theoretic Topology

Osvaldo Guzman

Michael Hrusak

Jonathan Verner

5.   Topology in Data Science

Magnus Botnan

Sara Kalisnik

Christian Lehn

Plenary speakers:

Topological Algebra and Analysis

Taras Banakh ( Ivan Franko Lviv National University, Ukraine)

Mahmoud Filali (University of Oulu, Finland)

Francesco Russo (University of Cape Town, South Africa)

Asymmetric Structures and Order

Szymon Dolecki (Burgundy University, France)

Seithuti Philemon Moshokoa (Tshwane University of Technology, South Africa)

Michel Schellekens (University College Cork, Ireland)

Dynamics and Continuum Theory

Daron Anderson (NUI Galway, Ireland)

Judy Kennedy (Lamar University, USA)

Petra Staynova (University of Leicester)

Set-Theoretic Topology

Rodrigo Hernandez (Universidad Autónoma Metropolitana, Mexico)

Jan van Mill (University of Amsterdam, Netherlands)

Dilip Raghavan (National University of Singapore, Singapore)

Topology in Data Science

Vladimir Itskov (Pennsylvania State University, USA)

Yusu Wang (Ohio State University, USA)

Winner of the Mary Ellen Rudin Award

Osvaldo Guzman (University of Toronto, Canada)