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## page was renamed from CodingProjects

<<TableOfContents>>
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 * People: Dan Bernstein, Tanja Lange, (Nils, Tanja's student, remotely), Johannes van der Horst, Michiel Kosters, Marco Streng, Vince Bush, Julio Brau, Michael Mourao  * People: Dan Bernstein, Tanja Lange, Niels Duif, Johannes van der Horst, Michiel Kosters, Marco Streng, Vince Bush, Julio Brau, Michael Mourao, John Cremona
 * Tom Fisher's Magma code for invariants and covariants of plane cubics [[attachment:covariants.m]], and for minimization and reduction of genus one models [[attachment:g1minimisation-2008.m]] [[attachment:g1reduction-2008.m]] [[attachment:minred-demo1.m]] [[attachment:minred-demo2.m]]
 * Ian Connell's lecture notes contain all the formulas needed to convert plane cubics and hyperelliptic quartics: see http://www.math.mcgill.ca/connell/public/ECH1/ (first several pages of Chapter 1 (c1.ps)).
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== Riemann-Roch Space (Normalization) == == Function Fields ==
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The main goal of this project is to get the basic infrastructure for function fields into Sage. If time permits, we will also implement Hess's algorithms.
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 * There are function fields over an arbitrary base field
 * basic infrastructure
 * People: William Stein, Maarten Derickx, Peter Bruin, Jan Tuitman, Max Flander, Tanja Lange, Michiel Kosters, Christiane Peters, Marco Streng		 People: William Stein, Maarten Derickx, Peter Bruin, Jan Tuitman, Max Flander, Tanja Lange, Michiel Kosters, Christiane Peters, Marco Streng

 * Trac 9054: [[http://trac.sagemath.org/sage_trac/ticket/9054|Create a class for basic function_field arithmetic for Sage]]
 * Trac 9094: [[http://trac.sagemath.org/sage_trac/ticket/9094|is_square and sqrt for polynomials and fraction fields]]
 * Trac 9095: [[http://trac.sagemath.org/sage_trac/ticket/9095|Heights of points on elliptic curves over function fields]]
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 * plotting, actions, fundamental domains
 * Java
 * port Verrill's fund.dom. program		  * plotting (arc of circle, filling domain bounded with arc of circles, ...)
 * actions (using the coercion model to act on Hyperbolic Plane element by matrices)
 * fundamental domains (port H. Verrill program and implement R. Kulkarni method)
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Related tickets
 * Trac 3313: [[http://trac.sagemath.org/sage_trac/ticket/3313|Old ticket for lifting of SL_m(Z/nZ) to SL_m(Z)]]
 * Trac 7424: [[http://trac.sagemath.org/sage_trac/ticket/7424|Inconsistency of SL and PSL]]
 * Trac 9076: [[http://trac.sagemath.org/sage_trac/ticket/9076|plot arc of circle]]

Created tickets:
 * Trac 9437: [[http://trac.sagemath.org/sage_trac/ticket/9076|detected bug for special linear group over finite rings]]
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 * People: Andy Novocin, Wieb Bosma, Johannes van der Horst, Bill Hart  * People: Andy Novocin, Wieb Bosma, Johannes van der Horst, Bill Hart, Max Flander
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=== Specific Projects ===
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== code used to get new ECM speed records ==   * Greatly improve [[http://nb.sagemath.org/|the Sage Notebook website]]
    * Improved information on the site:
       * how to setup a server
          * standalone server
          * with sage
       * how to develop the sage notebook: give a complete example of how to change something
    * Make site much prettier -- I think it is ugly.
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  * Database
    * Users and basic configuration -- get the startup time of sagenb.org down from 20 minutes to 1 second by replacing users.pickle by a sqlite database, and rewriting the notebook server to use this database instead of making a list of *all* users (and other data about them) in memory.
    * worksheets -- see [[http://trac.sagemath.org/sage_trac/ticket/8757|trac 8757]]; This might also totally deal with the above "users and basic configuration" info.

  * Worksheet labels
    * linking between worksheets: [[http://trac.sagemath.org/sage_trac/ticket/5042|trac 5042]] is relevant
    * support library worksheets, so you can type, e.g., {{{load "library.sws"}}}
   

== General framework for the factor(n) command ==
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 * special support for $p^n \pm 1$.
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 * [[http://ttic.uchicago.edu/~kalai/papers/old_papers/factorcryptology.pdf|Kalai's paper]]
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 * mwrank...
 * People: Marco Streng, Mak Trifkovic, Peter Bruin
 * a Conic class using Denis Simon's pari code, possibly mwrank, finding points over number fields, other fields?
 * see sage trac #727 (and also #6881)
 * People: Marco Streng, Mak Trifkovic, Peter Bruin, John Cremona
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== Porting ECHIDNA code from MAGMA ==


 * People: Lloyd Kilford

Contents

  1. sage-4.5
  2. ABC at home
  3. Models for elliptic curves
  4. Function Fields
  5. Hyperbolic geometry
  6. Ticket #4000 on rational polynomials... QQ[x] via FLINT
  7. Sage on GPU's
  8. ZZ[x] factoring in FLINT, plus LLL
  9. MPIR projects
  10. Ticket #4260 - Sage + Linbox
  11. Sage Notebook in the classroom
    1. Specific Projects
  12. General framework for the factor(n) command
  13. Solving Conics
  14. Sums of Squares
  15. Porting ECHIDNA code from MAGMA

sage-4.5

  • Robert Miller

ABC at home

  • review code
  • model runtime
  • People: Bart de Smit, Willem Jan Palenstijn, Demeyer, Mak Trifkovic, Thijs van Dijk, Alyssa Milburn, Dan Bernstein, Sebastian Pancratz

Models for elliptic curves

Function Fields

The main goal of this project is to get the basic infrastructure for function fields into Sage. If time permits, we will also implement Hess's algorithms.

People: William Stein, Maarten Derickx, Peter Bruin, Jan Tuitman, Max Flander, Tanja Lange, Michiel Kosters, Christiane Peters, Marco Streng

Hyperbolic geometry

  • plotting (arc of circle, filling domain bounded with arc of circles, ...)
  • actions (using the coercion model to act on Hyperbolic Plane element by matrices)
  • fundamental domains (port H. Verrill program and implement R. Kulkarni method)
  • People: Vincent Delecroix, Maite Arianes, Thijs van Dijk

Related tickets

Created tickets:

Ticket #4000 on rational polynomials... QQ[x] via FLINT

  • People: Sebastian Pancratz, Bill Hart, Jan Tuitman

Sage on GPU's

  • People: Dan Bernstein, Thijs van Dijk, Andy Novocin

ZZ[x] factoring in FLINT, plus LLL

  • People: Andy Novocin, Wieb Bosma, Johannes van der Horst, Bill Hart, Max Flander

MPIR projects

  • fmpz in Sage
  • a very concrete C project
  • People: Frederik Johansson, Bill Hart

Ticket #4260 - Sage + Linbox

  • unify for matrices over GF(p)
  • C++ wizardry, etc
  • People: Andy Novocin, Clement Pernet, (Burcin Erocal, remotely)

Sage Notebook in the classroom

  • People: Bart de Smit, William Stein, Eric van der Velden, Willem Jan Palenstijn, Alyssa Milburn

Specific Projects

  • Greatly improve the Sage Notebook website

    • Improved information on the site:
      • how to setup a server
        • standalone server
        • with sage
      • how to develop the sage notebook: give a complete example of how to change something
    • Make site much prettier -- I think it is ugly.
  • Database
    • Users and basic configuration -- get the startup time of sagenb.org down from 20 minutes to 1 second by replacing users.pickle by a sqlite database, and rewriting the notebook server to use this database instead of making a list of *all* users (and other data about them) in memory.

    • worksheets -- see trac 8757; This might also totally deal with the above "users and basic configuration" info.

  • Worksheet labels

    • linking between worksheets: trac 5042 is relevant

    • support library worksheets, so you can type, e.g., load "library.sws"

General framework for the factor(n) command

  • mpfq is LGPL!

  • special support for p^n \pm 1.

  • People: Hendrik Lenstra, Dan Bernstein, Tanja Lange, Christiane Peters, Peng Tian, Julio Brau, Mak Trifkovic

  • Kalai's paper

Solving Conics

  • a Conic class using Denis Simon's pari code, possibly mwrank, finding points over number fields, other fields?
  • see sage trac #727 (and also #6881)
  • People: Marco Streng, Mak Trifkovic, Peter Bruin, John Cremona

Sums of Squares

  • People: Japp Spies, Dung Duong

Porting ECHIDNA code from MAGMA

  • People: Lloyd Kilford

days23/CodingProjects (last edited 2010-08-31 23:54:42 by was)