# Sage days 10 in Nancy (France)

## October 10 to 15, 2008 at the Lorraine Laboratory of IT Research and its Applications (Loria)

### Registration

Please register on the [http://registration.net-resa.com/cgi-bin/WebObjects/gnetresa.woa/wa/newParticipant?idevt=281&profil=396 registration website].

See the [http://www.loria.fr/~zimmerma/sd10_participants.pdf list of participants].

### Program committee

- Michael Abshoff
- Timothy Daly
- Laurent Fousse
- Clément Pernet
- Ludovic Perret
- Paul Zimmermann

The following program is preliminary.

### Program:

See [http://www.loria.fr/~zimmerma/sd10_schedule.pdf the full program in pdf format].

- October 10: Linear Algebra (chair Clement Pernet)
- Invited speakers:
[http://www.cs.uwaterloo.ca/~astorjoh/ Arne Storjohann]:[:/AStorjohannTalk: Algorithms for linear algebra on polynomial and integer matrices: similarities and differences] attachment:Storjohann_SD10_talk.pdf

[http://ljk.imag.fr/membres/Jean-Guillaume.Dumas/ Jean-Guillaume Dumas]:[:/JGDumasTalk: Simultaneous Modular Reduction and Kronecker Substitution for Small Finite Fields] attachment:Dumas_SD10_talk.pdf

- Martin Albrecht: [:/MAlbrechtTalk: Matrix multiplication over GF(2) in the M4RI library] attachment:Martin_Albrecht_Matmul_M4RI.pdf
- Gregory Bard : Using Graph Theory to Control Fill-in for Sparse Matrix Reduction to RREF over Fields of non-zero characteristic
[http://www.rlmiller.org Robert Miller]: [:/RMillerTalk: An example of implementing automorphism groups: linear codes] (cancelled due to illness)

- Invited speakers:
- October 11: Elliptic Curves (chair Laurent Fousse)
- Invited speakers:
[http://www.warwick.ac.uk/staff/J.E.Cremona/ John Cremona]: Elliptic Curves in Sage

- This talk will give a survey of Sage's capabilities for computations with elliptic curves, including some recent developments and a wish-list of possible future developments.

[http://perso.univ-rennes1.fr/david.lubicz/index_en.html David Lubicz]: [:/DavidLubiczTalk: Computing modular correspondences for abelian varieties (with Jean-Charles Faugère)]

Nadia El Mrabet: [:/NadiaElMrabetTalk: Implementing the Weil, Tate and Ate pairings using Sage]

- Invited speakers:
- October 11: Sage-Combinat (chair Nicolas Thiery) (follows the Elliptic Curves session)
- The purpose of the *-Combinat project is to provide an extensible toolbox for computer exploration in algebraic combinatorics, and foster code sharing between researchers in this area. We will present the history, features, and design of MuPAD-Combinat, and discuss the timeline, difficulties, but also great technical and community opportunities that arise from the ongoing port as Sage-Combinat.

- Invited Speakers:
- Florent Hivert and Nicolas Thiéry: [:/Combinat-Talk : *-Combinat: Sharing Algebraic Combinatorics since 2000]

- Mike Hansen: Decomposable Objects and combinatorial species attachment:mhansen-species.pdf
[http://www.rlmiller.org Robert Miller]: Partition Refinement for Classification attachment:Miller_SD10_talk.pdf

- Franco Saliola: Posets and words in Sage-Combinat

- October 12: Groebner Bases (chair Ludovic Perret)
- Invited speakers:
Carlo Traverso: [:/CarloTraversoTalk: Groebner bases, lattices and cryptography]

[http://www.csd.uwo.ca/~eschost/ Éric Schost]: [:/EricSchostTalk: Computing with triangular families of polynomials: an overview]

B. Erocal : [:/BurcinErocalTalk: SCrypt: Symbolic computation assists algebraic cryptanalysis] attachment:erocal_scrypt_sd10.pdf

M. Brickenstein : Secrets of Singular and PolyBoRi attachment:brickenstein_secrets.pdf

- This talk presents techniques for Gröbner bases calculations implemented in the computer algebra system Singular and the
PolyBoRi framework. I will consider

- data structures
- algorithms

- This talk presents techniques for Gröbner bases calculations implemented in the computer algebra system Singular and the
[http://www-calfor.lip6.fr/~renault/index.html Guénaël Renault]: [:/GuenaelRenaultTalk: Computation of the Triangular Representation of a Splitting Field]

- Invited speakers:
- October 13-15: Coding Sprints (chair Michael Abshoff)
- October 14: SAGE Demo by Robert Bradshaw at 17h.

Standard day schedule is as follows:

- 09h30-10h00 Arrival/registration
- 10h00-11h00 Invited Talk 1
- 11h00-11h30 Coffee Break
- 11h30-12h00 Contributed Talk 1
- 12h00-14h00 Lunch Break
- 14h00-15h00 Invited Talk 2
- 15h00-15h30 Coffee Break
- 15h30-16h00 Contributed Talk 2
- 16h00-16h30 Contributed Talk 3

The Sage Days 10 dinner will take place on the 11th.

### Coding Sprint

[:/CodingSprint: Overview page]

### Dinner on Saturday

The dinner is at [http://maps.google.com/maps?f=q&hl=en&geocode=&q=cafe+foy&sll=48.693892,6.182599&sspn=0.008342,0.022745&ie=UTF8&ll=48.693262,6.18394&spn=0.004171,0.011373&t=h&z=17&iwloc=A grand cafe foy ] - train 1 station cathedral, if you look into the train's direction, turn left. then:

[http://maps.google.com/maps?f=d&saddr=Rue+Saint-Georges&daddr=1,+Place+Stanislas,+54000+Nancy,+France+(Grand+Cafe+Foy)&hl=en&geocode=Fdr65gIdqmReAA%3B&mra=ls&dirflg=w&sll=48.691343,6.184273&sspn=0.004171,0.011373&ie=UTF8&t=h&z=18 click here to see how to walk from the station "Cathedrale" to the place] (I'm not sure about the starting point, but it should be easy)

### Location:

[http://www.loria.fr/presentation-en Loria] [http://cado.gforge.inria.fr/workshop/venue.html Coming to Loria (webpage from another event, don't be confused).]

LORIA Campus Scientifique 54506 Vandoeuvre-lès-Nancy France

[http://maps.google.fr/maps?f=q&hl=en&geocode=&ie=UTF8&ll=48.665497,6.157295&spn=0.002643,0.00501&t=h&z=18 Google Maps]

### Accomodations

[http://www.ot-nancy.fr/uk/centre_historique/index.php Finding an hotel in Nancy.]

We will also coordinate a group reservation at the youth hostel: [http://www.fuaj.org/Nancy# Un petit coin de paradis]. Sign up in the ["Days 10 Youth Hostel Page"] if you're interested.

### Close events

You may be interested in the [http://cado.gforge.inria.fr/workshop/ CADO project workshop] which will occur at the same place, October 7-9.

### Sponsors

[http://www.grand-nancy.org/ Communauté Urbaine du Grand Nancy]

[http://www.uhp-nancy.fr/ University Nancy 1 Henri Poincaré]

[http://www.inria.fr/ INRIA]

[http://www.gdr-im.fr/ GDR IM]