Differences between revisions 16 and 58 (spanning 42 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 16 as of 2014-02-04 08:49:00 → 
  Size: 3869
  Editor: vdelecroix
  Comment:
+   ← Revision 58 as of 2014-04-13 15:14:26 → ⇥
  Size: 7369
  Editor: slabbe
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 1:
-= 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 6:
+Line 10:
-Following the *-Combinat tradition we booked the guest house 
[[http://www.cernayvacances.com/CEngels.html|The Tower]] in Cernay-la-Ville.
It is a very nice and cosy "gîte", 50 minutes from Paris by public transport.
+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 10:
+Line 15:
-== Tentative list of participants ==
+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 12:
+Line 22:
- * Adrien Boussicault
 * Vincent Delecroix
 * Eric Gourgoulhon
 * Samuel Lelièvre
 * ThierryMonteil
 * Nicolas M. Thiéry
+This workshop is also "Sage Days 57".
More Sage workshops are listed on the [[Workshops]] page of the Sage wiki.
-Line 19:
+Line 25:
+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 20:
+Line 27:
-== Tentative list of themes ==
+== Participants ==
-Line 22:
+Line 29:
-(Participants, please edit!)
+. 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 24:
+Line 48:
-=== Coxeter groups ===
+== Programme and topics ==
-Line 26:
+Line 50:
-=== Languages ===
+On Monday there will be an introduction to git for those interested.
-Line 28:
+Line 52:
- * interested
   * Vincent
+The rest of the programme is decided together during the workshop.
-Line 31:
+Line 54:
- * todo
   * implement the category of languages (from previous work of me and Stepan, [[http://trac.sagemath.org/ticket/12224|#12224]], [[http://trac.sagemath.org/ticket/12225|#12225]], [[http://trac.sagemath.org/ticket/12227|#12227]])
   * finish the inclusion of subshift of finite type and work on sofic shifts ([[http://trac.sagemath.org/ticket/12996|#12996]])
+If you have wishes or coding projects, please edit the [[days57-topics|list of topics]].
-Line 35:
+Line 56:
-=== Translation surfaces ===
+== Status report ==
-Line 37:
+Line 58:
- * interested
   * Vincent
   * Samuel
   * Thierry
+ * 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:
- * todo
   * better datastructure for permutations
   * include Charles's code into Sage
   * implementat a datastructure for translation surfaces ?
+ * 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 47:
+Line 68:
-=== Tensors on free modules ===
+ * 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:
- * interested
   * Eric
+ * Charles
   * Ticket #16102
   * translation surfaces : merging his code with Vincent existing code.
-Line 52:
+Line 76:
- * todo
   * implement tensor products of generic free modules of finite rank and the associated tensor algebra (by ''generic'' it is meant ''without any privileged basis'')
+ * Tomer
   * #15595
   * #16092
   * #16090
   * Subgroup zeta functions, found some bugs in symbolic
-Line 55:
+Line 82:
+ * Volker
   * Backend for polyhedra (especially double description algorithm) on AA
-Line 56:
+Line 85:
-=== worksheet repository ===
 * see, DepotDeFeuillesDeCalcul could be nice to first brainstorm all together, even for people not interested in coding
 * interested
   * Thierry
   * Eric
   * Vincent
+ * Luca Thierry Vincent
   * An index for Sage pedagogical ressources.
-Line 63:
+Line 88:
+ * Thierry
   * rewiewed
-Line 64:
+Line 91:
-== Practical information ==
+ * Mathieu
   * #15673
   * #16107
   * Lazy power series.
-Line 66:
+Line 96:
+ * Patxi
   * tableaux, pbs with mutability
-Line 67:
+Line 99:
-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.
+ * Nicolas B
  * review of the set factory
  * parallelization at low-level using multithreading
-Line 71:
+Line 103:
-The Tower can accommodate 8-10 people, and if needed there is another
adjacent guest house.
+ * 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 76:
+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 79:
+Line 123:
-Participants can stay until the morning of Saturday, April 12, 2014.
+Participants are welcome to stay until Saturday, April 12.
-Line 81:
+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 86:
+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 ===
-Line 89:
+Line 129:
-{{{
    Name:
    will participate in the "Fourth Sage-Combinat Days in Cernay".
    Date of arrival:
    Date of departure:
}}}
+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.
-Line 100:
+Line 161:
+ * [[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]]
-Line 101:
+Line 163:
-   There are two bus stops in Cernay. The closest to the guest house is Grand'Place.
+ * 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.
-Line 103:
+Line 170:
-   You can check travel itineraries on `ViaNavigo <http://www.vianavigo.com/>`_.
+ * 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.
-Line 105:
+Line 173:
-   BEWARE: there are big gaps in the day with no buses to Cernay!
+ * We will run some car shuttles from Saint-Rémy-les-Chevreuse : [[days57-car_shuttles|car shuttles organisation]]
-Line 107:
+Line 175:
- * [[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 and aerial photo]]
+=== Registration ===
-Line 109:
+Line 177:
-We will do some car shuttles from Saint-Rémy-les-Chevreuse. Please contact us in
advance to arrange that.
+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.
-Line 112:
+Line 181:
-=== Other Sage events ===
+{{{
    Fourth Sage-Combinat Days in Cernay
-Line 114:
+Line 184:
-Upcoming Sage workshops are listed on the [[Workshops]] page
+    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.

Diff for "days57"