Differences between revisions 8 and 58 (spanning 50 versions)

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

Contents

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

Tomer Bauer (Bar-Ilan U, Ramat Gan, Israel), 6--12 April
Adrien Boussicault (LaBRI, Bordeaux, France)
Volker Braun (Oxford U, UK) 6--12 April
Nicolas Borie (U Paris-Est Marne-la-Vallée, France)
Luca De Feo (U Versailles Saint-Quentin, France)
Vincent Delecroix (Labri, Bordeaux, France) 5--12 April
Matthieu Dien (UPMC, U Paris 6, Paris, France) 6--12 April
Charles Fougeron (IMJ, U Paris 7, Paris, France)
Eric Gourgoulhon (Luth, Observatoire de Paris, France)
Florent Hivert (LRI, U Paris-Sud Orsay, France)
Jean-Philippe Labbé (Freie U Berlin, Germany)
Sébastien Labbé (LIAFA, Paris, France)
Patxi Laborde Zubieta (LaBRI, Bordeaux, France) 5 - 12 April
Samuel Lelièvre (LMO, U Paris-Sud, Orsay, France), 5--12 April
Thierry Monteil (Lirmm, Montpellier, France)
Vivien Ripoll (U Vienna, Austria)
Nicolas M. Thiéry (LRI, U Paris-Sud, Orsay, France)
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 [email protected], 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.

-  ⇤ ← Revision 8 as of 2014-01-31 10:46:16 → 
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+   ← Revision 58 as of 2014-04-13 15:14:26 → ⇥
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+Additions are marked like this.
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-{{{#!rst
Sage-Combinat Days in Cernay, April 6-12, 2014 (Sage Days 57) (Cernay 2014)
===========================================================================
+= Sage-Combinat Days in Cernay, 6-12 April 2014 =

<<TableOfContents()>>

== Sage Days 57, Cernay 2014 ==
-Line 8:
+Line 10:
-Following the \*-Combinat tradition we reserved the guest house `The
Tower <http://www.cernayvacances.com/CEngels.html>`_ at
Cernay-la-Ville.  It is very nice and cosy, 35 min train + 15
min bus from downtown Paris.
+We booked the guest house
[[http://www.cernayvacances.com/en/stay/de-toren/|The Tower]] (and
[[http://www.cernayvacances.com/en/stay/le-grenier-royal/|Le grenier royal]]),
a very nice and cosy "gîte", just short of an hour from Paris by public transport.
-Line 13:
+Line 15:
-Tentative list of themes
========================
+This follows a tradition of *-combinat workshops: 
[[combinat/SageCombinatDaysCernay2012|2012]],
[[combinat/SageCombinatChevieWorkshopOrsay2010|2010]],
[[combinat/SageCombinatWorkshopOrsay|2009]], 
[[http://mupad-combinat.sourceforge.net/Wiki/SecondDevelopersMeeting|2007]]...
See the links for activity reports and some photos.
-Line 16:
+Line 22:
-Participants, please edit!
+This workshop is also "Sage Days 57".
More Sage workshops are listed on the [[Workshops]] page of the Sage wiki.
-Line 18:
+Line 25:
-Coxeter groups
--------------
+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.
-Line 21:
+Line 27:
-Languages
---------
+== Participants ==
-Line 24:
+Line 29:
-interested: Vincent
+. 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
-Line 26:
+Line 48:
-todo list
+== Programme and topics ==
-Line 28:
+Line 50:
-- implement the category of languages (from previous work of me and Stepan, `#12224 <http://trac.sagemath.org/ticket/12224>`_, `#12225 <http://trac.sagemath.org/ticket/12225>`_, `#12227 <http://trac.sagemath.org/ticket/12227>`_)
- finish the inclusion of subshift of finite type and work on sofic shifts (`#12996 <http://trac.sagemath.org/ticket/12225>`_)
+On Monday there will be an introduction to git for those interested.
-Line 31:
+Line 52:
-Translations surfaces
---------------------
+The rest of the programme is decided together during the workshop.
-Line 34:
+Line 54:
-interested: Vincent
+If you have wishes or coding projects, please edit the [[days57-topics|list of topics]].
-Line 36:
+Line 56:
-todo:
+== Status report ==
-Line 38:
+Line 58:
-- better datastructure for permutations
- inclusion of Charle's code into Sage
- implementation of a datastructure for translation surfaces ?
+ * Sébastien
   * ticket [[http://trac.sagemath.org/ticket/6637|#6637]]: cleaning !TransitiveIdeal and !TransitiveIdealGraded
   * Creation of !RecursivelyEnumeratedSet
   * Read my [[http://www.liafa.univ-paris-diderot.fr/~labbe/blogue/2014/04/my-status-report-at-sage-days-57-recursivelyenumeratedset/|status report here]]
-Line 42:
+Line 63:
-Tentative list of participants
==============================
+ * 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.
-Line 45:
+Line 68:
-* Adrien Boussicault
* Samuel Lelièvre
* Nicolas M. Thiéry
+ * Vivien
   * #16120 : add float to run
   * Found some bugs in the cyclotomic field and discovered that a ticket is waiting for 4 years.
-Line 49:
+Line 72:
-Practical information
=====================
+ * Charles
   * Ticket #16102
   * translation surfaces : merging his code with Vincent existing code.
-Line 52:
+Line 76:
-Accommodation will be covered by our funding sources.
Travel for PhD students and PostDocs can also be funded.
Other participants, please arrange funding for your travel.
+ * Tomer
   * #15595
   * #16092
   * #16090
   * Subgroup zeta functions, found some bugs in symbolic
-Line 56:
+Line 82:
-The Tower can accommodate 8-10 people, and if needed there is another
adjacent guest house.
+ * 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 ===
-Line 61:
+Line 121:
-Arrival on Sunday, April 6, is encouraged, and in fact early arrival is even
possible on the afternoon of Saturday, April 5, 2014.
+Arrival on Sunday, April 6, is encouraged; early arrival is possible on Saturday, April 5, 2014.
-Line 64:
+Line 123:
-Participants can stay until the morning of Saturday, April 12, 2014.
+Participants are welcome to stay until Saturday, April 12.
-Line 66:
+Line 125:
-Meals are cooked in turns by the participants for everyone, so bring
along your favorite recipes and dishes!  Also bring along hiking/climbing
shoes and music instruments/scores for the breaks. There will of course
be an open wifi and wired internet connection.
+If you wish to stay longer before or after these dates, let us know.
-Line 71:
+Line 127:
-To register, please fill in the following form and email it to
`Adrien Boussicault <http://www.labri.fr/perso/boussica/index_en.html>`_::
+=== 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
 * [[http://maps.google.fr/maps?f=q&source=s_q&hl=fr&geocode=&q=Cernay+la+ville&sll=47.15984,2.988281&sspn=17.161007,44.516602&ie=UTF8&ll=48.675731,1.971735&spn=0.004066,0.010868&z=17|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 [[http://www.savac.fr/transports/lignes-regulieres/votre-ligne-reguliere|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 [[http://www.vianavigo.com/|ViaNavigo]] (includes trains, RER, buses).
   Or [[http://ratp.fr|ratp]] but only for travel up to Saint-Rémy-les-Chevreuse.

 * We will run some car shuttles from Saint-Rémy-les-Chevreuse : [[days57-car_shuttles|car shuttles organisation]]

=== Registration ===

To register, send an email with subject "Cernay 2014" to `[email protected]`,
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
-Line 75:
+Line 185:
-    will participate in the "Fourth Sage-Combinat Days in Cernay".
+    Position:
    Institution:
    Your webpage:
-Line 79:
+Line 192:
-Coming from downtown Paris to Cernay
====================================
+    Travel funding request: (indicate approximate amount)
}}}
-Line 82:
+Line 195:
-* From Gare Montparnasse: 35 minutes train to Rambouillet + 15 minutes bus to Cernay-la-Ville
* From Châtelet-les-Halles: 45 minutes RER B to Saint-Rémy-les-Chevreuse + 15 minutes bus to Cernay-la-Ville

   There are two bus stops at Cernay. The closest to the guest house is Grand'Place.

   You can check travel itineraries on `ViaNavigo <http://www.vianavigo.com/>`_.

   BEWARE: there are big gaps in the day with no buses to Cernay!

* `Map and and aerial photo <http://maps.google.fr/maps?f=q&source=s_q&hl=fr&geocode=&q=Cernay+la+ville&sll=47.15984,2.988281&sspn=17.161007,44.516602&ie=UTF8&ll=48.675731,1.971735&spn=0.004066,0.010868&z=17>`_

We will do some car shuttles from Saint-Rémy-les-Chevreuse. Please contact us in
advance to arrange that.

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

Diff for "days57"