7th polymake conference and developer meeting at TU Berlin

January 29th, 2016

polymake conference

On Friday there will be one invited talk and several tutorial and helpdesk sessions for polymake users.

The registration fee for the tutorials is 5 Euros.

Participants are encouraged to bring their own laptop and use them in the tutorials, preferably with an installed version of polymake. See the Perpetual Beta Section for the most recent beta version of polymake or check the Download Section for the current release (3.0). If you have any polymake problem you want to get help during the workshop please describe your problem during the sign up process.

The conference takes place in the math building of TU Berlin:
Rooms MA 313/315,
Str. des 17. Juni 136,
10623 Berlin
see also: http://www.math.tu-berlin.de/

Registration: closed

Friday
09:00-09:30 Registration
09:30-10:30 Computing GIT-Fans with Symmetry
Janko Böhm
Room: MA 313
10:30-11:00 Coffee and Helpdesk
Room: MA 315
11:00-12:00 Features of polymake 3.0
Michael Joswig
Room: MA 313
demo design of polymake
12:00-14:00 Lunch
14:00-15:00 Tutorial Tutorial
Beginner libpolymake
André/Georg Benjamin
Room: MA 313 Room: MA 315
15:00-15:30 Coffee and Helpdesk
Room: MA 315
15:30-16:30 Demo Tutorial
tropical/atint scripting/perl
Simon Lars/Benjamin
Room: MA 313 Room: MA 315
16:30-18:00 Helpdesk
Rooms: MA 313/315
~19:00 Dinner (self paid)

Janko Böhm: Computing GIT-Fans with Symmetry

The GIT-fan is a combinatorial structure which describes all reasonable quotients obtainable from the action of an algebraic group on an algebraic variety. In the case of an algebraic torus acting on an affine variety, based on work of Berchtold and Hausen, Keicher has developed an algorithm for computing the GIT-fan. The algorithm relies on Groebner basis and polyhedral computations. Due to the complexity, in important examples from algebraic geometry a direct application of the algorithm is not feasible. In this talk, I will describe how to make these examples accessible by the use of efficient algorithms for computing saturations and by taking into account actions of symmetry groups.

This is joint work with Simon Keicher and Yue Ren.


Michael Joswig: Features of polymake 3.0

We will highlight some of the features which are new. This includes many new functions for (regular, semi-regular and less regular) 3-polytopes, basic numerical linear algebra, random discrete Morse functions and heuristic sphere recognition. The completely redesigned application tropical will be left for Simon's presentation in the afternoon. Additionally, we will give background information on polymake semantics and design principles.

Developer Meeting

The developer meeting takes place on January 28th and 30th.

On Thursday we will have general discussions on important topics and tickets, and assign tickets/tasks to small teams for the coding session on Saturday.

On Thursday we will go for lunch around 12:30. Everybody who is already there is welcome to join.

Official start is at 15:00 in MA 621.

On Saturday we will meet at 10:00.

Some topics for the discussion:

  • Make use of C++11/C++14
  • Reorganize group extension / data types
  • jupyter interface
  • Use gerrit as master code line gatekeeper
  • Future of database extension
  • Clarify some common misunderstandings about rule semantics

See the roadmap for 3.1 and tickets marked for the workshop!

Please feel free to add more topics!

workshop0116.txt · Last modified: 2016/01/30 09:06 by joswig
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