Sage-Combinat Days in Cernay, 6-12 April 2014

Sage Days 57, Cernay 2014

The fourth "Sage-Combinat Days in Cernay" will be held at Cernay-la-Ville (40km South-West of Paris, near Orsay), April 6-12, 2014.

We booked the guest house The Tower (and Le grenier royal), a very nice and cosy "gîte", just short of an hour from Paris by public transport.

This follows a tradition of *-combinat workshops: 2012, 2010, 2009, 2007... See the links for activity reports and some photos.

This workshop is also "Sage Days 57". More Sage workshops are listed on the Workshops page of the Sage wiki.

The workshop is funded by ANR projects DynA3S, GeoDyM, PSyCo, with material help from the Mathematics and the Computer Science Departments at Université Paris-Sud, Orsay.

Participants

1. Tomer Bauer (Bar-Ilan U, Ramat Gan, Israel), 6--12 April
2. Adrien Boussicault (LaBRI, Bordeaux, France)
3. Volker Braun (Oxford U, UK) 6--12 April
4. Nicolas Borie (U Paris-Est Marne-la-Vallée, France)
5. Luca De Feo (U Versailles Saint-Quentin, France)
6. Vincent Delecroix (Labri, Bordeaux, France) 5--12 April
7. Matthieu Dien (UPMC, U Paris 6, Paris, France) 6--12 April
8. Charles Fougeron (IMJ, U Paris 7, Paris, France)
9. Eric Gourgoulhon (Luth, Observatoire de Paris, France)
10. Florent Hivert (LRI, U Paris-Sud Orsay, France)
11. Jean-Philippe Labbé (Freie U Berlin, Germany)
12. Sébastien Labbé (LIAFA, Paris, France)
13. Patxi Laborde Zubieta (LaBRI, Bordeaux, France) 5 - 12 April
14. Samuel Lelièvre (LMO, U Paris-Sud, Orsay, France), 5--12 April
15. Thierry Monteil (Lirmm, Montpellier, France)
16. Vivien Ripoll (U Vienna, Austria)
17. Nicolas M. Thiéry (LRI, U Paris-Sud, Orsay, France)
18. Jean-Pierre Flori (ANSSI, Paris, France), 7 and (probably 9) April

Programme and topics

On Monday there will be an introduction to git for those interested.

The rest of the programme is decided together during the workshop.

If you have wishes or coding projects, please edit the list of topics.

Status report

• Sébastien

  • ticket #6637: cleaning TransitiveIdeal and TransitiveIdealGraded

  • Creation of RecursivelyEnumeratedSet

  • Read my status report here

• Jean Philippe
  • ticket #15703
  • A nice 3D self-rotating picture representing limit set of a generic orbit under the action of a Coxeter group on the projective space.
  • upgraded his ubuntu and can now use Linux back again.
• Vivien
  • #16120 : add float to run
  • Found some bugs in the cyclotomic field and discovered that a ticket is waiting for 4 years.
• Charles
  • Ticket #16102
  • translation surfaces : merging his code with Vincent existing code.
• Tomer
  • #15595
  • #16092
  • #16090
  • Subgroup zeta functions, found some bugs in symbolic
• Volker
  • Backend for polyhedra (especially double description algorithm) on AA
• Luca Thierry Vincent
  • An index for Sage pedagogical ressources.
• Thierry
  • rewiewed
• Mathieu
  • #15673
  • #16107
  • Lazy power series.
• Patxi
  • tableaux, pbs with mutability
• Nicolas B
  • review of the set factory
  • parallelization at low-level using multithreading
• Florent
  • Parallelism in sage (with Nicolas B.)
• Nicolas T
  • lot of discussions
  • fixed long standing performance issue with categories which was one of the blocker for #10963
  • work on #16058: reorganisation of the index of sage.combinat in the reference manual
• Adrien
  • Implemented parallelogram polyomino.

Older informations

Dates

The core of the activity will be Monday, April 7, 2014 to Friday, April 11, 2014.

Arrival on Sunday, April 6, is encouraged; early arrival is possible on Saturday, April 5, 2014.

Participants are welcome to stay until Saturday, April 12.

If you wish to stay longer before or after these dates, let us know.

Venue

The workshop takes place in a guest house, which has comfortable working spaces, a cooking and dining area, and a few bedrooms. This favors an intense workshop, with everything taking place in the same location.

We will set up a wired internet connection and an open wifi.

The Tower can accommodate 8-10 people and the adjacent guest house we rented offers room for 6 more people.

The surrounding area offers nice hiking possibilities, bring hiking/climbing shoes.

Your music instruments and scores, card or board games, etc, are also welcome for the breaks.

Meal organisation

Meals are cooked in turns by the participants for everyone, so bring along your favorite recipes and dishes! All diets, including vegetarian, will be taken into account.

Funding

The workshop is funded by ANR projects DynA3S, GeoDyM, PSyCo, with material help from the Mathematics and the Computer Science Departments at Université Paris-Sud, Orsay.

Accommodation and meals for all participants are covered by our funding sources.

We can also cover travel expenses for most participants, especially PhD students and postdocs.

From Paris to Cernay

• From Gare Montparnasse: 35 minutes train to Rambouillet + 15 minutes bus to Cernay-la-Ville
• From Denfert-Rochereau: 40 minutes RER B to Saint-Rémy-les-Chevreuse + 15 minutes bus to Cernay-la-Ville

• Map and aerial photo

• Bus option
  • from St Remy (RER station), bus 39-03 or 39-103
  • from Rambouillet (SNCF station) line 39-03 and 39-203

  • More information on schedules here. Of the two bus stops in Cernay, Grand'Place is closest to the guest house. Beware that there are big gaps in the day with no buses to Cernay.

• Check travel itineraries on ViaNavigo (includes trains, RER, buses).

  • Or ratp but only for travel up to Saint-Rémy-les-Chevreuse.

• We will run some car shuttles from Saint-Rémy-les-Chevreuse : car shuttles organisation

Registration

To register, send an email with subject "Cernay 2014" to aaa@bbb.ccc.ddd, where (aaa,bbb,ccc,ddd) = (sage-cernay,math,u-psud,fr), filling in all the fields you can from the following form.

    Fourth Sage-Combinat Days in Cernay

    Name:
    Position:
    Institution:
    Your webpage:

    Date of arrival:
    Date of departure:

    Travel funding request: (indicate approximate amount)

Please add a few words about your project(s) for the workshop.