# 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 registration website.

See the list of participants.

### Program committee

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

The following program is preliminary.

### Program:

See the full program in pdf format.

- October 10: Linear Algebra (chair Clement Pernet)
- Invited speakers:
Arne Storjohann:Algorithms for linear algebra on polynomial and integer matrices: similarities and differences Storjohann_SD10_talk.pdf

Jean-Guillaume Dumas:Simultaneous Modular Reduction and Kronecker Substitution for Small Finite Fields Dumas_SD10_talk.pdf

Martin Albrecht: Matrix multiplication over GF(2) in the M4RI library 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 Bard_SD10_talk.pdf

Robert Miller: An example of implementing automorphism groups: linear codes (cancelled due to illness)

- Invited speakers:
- October 11: Elliptic Curves (chair Laurent Fousse)
- Invited speakers:
John Cremona: Elliptic Curves in Sage John_Cremona_talk.pdf

- 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.

David Lubicz: Computing modular correspondences for abelian varieties (with Jean-Charles Faugère) David_Lubicz_talk.pdf

- 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: Sharing Algebraic Combinatorics since 2000

Mike Hansen: Decomposable Objects and combinatorial species mhansen-species.pdf

Robert Miller: Partition Refinement for Classification Miller_SD10_talk.pdf

Franco Saliola: Posets and words in Sage-Combinat saliola-sd10-talk.pdf

- October 12: Groebner Bases (chair Ludovic Perret)
- Invited speakers:
Carlo Traverso: Groebner bases, lattices and cryptography TalkTraverso.pdf

Éric Schost: Computing with triangular families of polynomials: an overview Sage08Eric.pdf

B. Erocal : SCrypt: Symbolic computation assists algebraic cryptanalysis erocal_scrypt_sd10.pdf

M. Brickenstein : Secrets of Singular and PolyBoRi 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
Guénaël Renault: Computation of the Triangular Representation of a Splitting Field TalkRenault.pdf

- 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

### Dinner on Saturday

The dinner is at grand cafe foy - train 1 station cathedral, if you look into the train's direction, turn left. then:

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:

Loria Coming to Loria (webpage from another event, don't be confused).

LORIA Campus Scientifique 54506 Vandoeuvre-lès-Nancy France

### Accomodations

We will also coordinate a group reservation at the youth hostel: 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 CADO project workshop which will occur at the same place, October 7-9.