Differences between revisions 18 and 19
Revision 18 as of 2012-07-11 18:28:37
Size: 4682
Editor: jhpalmieri
Comment:
Revision 19 as of 2012-07-11 18:29:14
Size: 4725
Editor: jhpalmieri
Comment:
Deletions are marked like this. Additions are marked like this.
Line 185: Line 185:
- induced map on homology (high priority)

Sage Days 40 Coding Sprint Projects

For the main Sage Days 40 wiki page go here.

Below is a list of proposed projects.

Refactoring and extensions to symmetric functions / KSchur

Anne Schilling Mike Zabrocki Dorota

Arithmetic dynamics & symmetric functions

Ben Hutz

Grothendieck polynomials / ...

Kaisa / Nicolas; checking out with Viviane's code Mark Jessica Striker

Alternating sign matrices

Jessica Striker

Refactoring and extensions to Hopf algebras

Anne Schilling Mike Zabrocki John Franco

Hopf algebras on graphs

Jeremy

Crystals

Anne Schilling Mark Julie Dan Ben Arthur

Get people in Sage

Dan Nicolas Gregg Franco

Quiver representations

Gregg Peter Webb Franco Saliola Charles Paquette Alex Fink Julie Al Garver Emily Gunawan

Clusters algebras from surfaces

Gregg Al Garver Weiwen Gu Emily Gunawan

Graphs

Status as of Wednesday: Jeremy wrote some code to contract edges, check whether an edge is a cut-edge, and compute the Tutte polynomial. Lauren and Matt are beta-testing it. (It also needs commenting, examples, etc.)

Jeremy L. Martin Anne Schilling Tom Lauren
  • Tutte Polynomial

Kevin Thomas

Posets & Simplicial complexes

Demo including facade posets: Kim Vic

Jessica Striker Jeremy John^2 Charles? Kevin Thomas Alex Csar?

Wish List

Posets:

is_modular - Alex Csar

is_atomic

is_semimodular - Alex Csar

adding functionality to poset elements

iterate over lattices

zeta, order, characteristic polynomials

more examples of posets

  • Young diagrams - Kevin
  • Semistandard tableaux - Jessica/Julie

graph_editor

disjoint union

ordinal sum

product

interval posets

make dual poset function work properly for lattices (it seems to break the join)

Simplicial Complexes:

Shellability

G-posets - homology modules

H_*(-, R), H^*(-, R) when R is neither Z nor a field

cup products

cohomology operations

how to represent (co-)homology classes?

links (already done)

stars

Cohen-Macalaulay (http://trac.sagemath.org/sage_trac/ticket/11523)

Fundamental Group

is_shifted

is_pseudo-manifold (http://trac.sagemath.org/sage_trac/ticket/13226 -- needs review)

triangulate complex projective space (research problem; see also http://mathoverflow.net/questions/20664/why-is-complex-projective-space-triangulable)

chain complexes:

  • induced map on homology (high priority)
  • mapping cone
  • tensor product
  • Tot of a bicomplex
  • filtered chain complexes and the associated spectral sequence?

Topological structures & categories & their reps

Peter webb John

Sage Documentation

John

Graded Algebras

Franco John

Partition algebras and their reps

George

Get my patches into Sage

Nicolas Franco Anne Dan Gregg ...

Review of what's missing from Stembridge's packages

Alex Drew Thomas Kevin

Extended Affine hecke algebras / weyl groups

Non symmetric Macdonald polynomials & friends in general types

Mark Nicolas Anne Dan Ben Daniel

Sagetex

Nicolas Dan

Schubert Calculus

Mark Alex Nicolas Kaisa Yasuhide Tom

Integration of (affine) symmetric group and Coxeter groups

Alex Csar Tom Denton Holly

NCSF/QSYM

Chris Mike Holly Dorota Franco Nicolas?

Statistics on permutations

Kim2

Interface to Gfan and version update

Marshall Hampton

Complex reflexion groups

Alex Miller

Matroids

Jeremy Vic

I learned that there is a matroid project well underway already: see [[http://trac.sagemath.org/sage_trac/ticket/7477|the trac ticket]] and/or [[https://groups.google.com/group/sage-matroid|the Google group]]. -- Jeremy

days40_projects (last edited 2012-07-19 11:43:39 by zabrocki)