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← Revision 36 as of 2012-07-19 11:43:39 ⇥
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Symmetric functions and Hopf algebras ===================================== |
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========================================================== Anne Schilling Mike Zabrocki |
---------------------------------------------------------- Anne Schilling, Mike Zabrocki, |
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See also the review of Stembridge's packages below |
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Grothendieck polynomials / ... ============================== Kaisa / Nicolas; checking out with Viviane's code Mark Jessica Striker Alternating sign matrices ========================= Jessica Striker |
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=========================================== Anne Schilling Mike Zabrocki |
------------------------------------------- Anne Schilling, Mike Zabrocki, John, Franco Graded Algebras --------------- Franco, |
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Franco |
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Crystals ======== Anne Schilling Mark Julie Dan Ben Arthur Get people in Sage ================== Dan Nicolas Gregg Franco |
NCSF/QSYM --------- Chris, Mike, Holly, Dorota, Franco, Nicolas? Partition algebras and their reps --------------------------------- George |
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Gregg Peter Webb Franco Saliola Charles Paquette Alex Fink Julie Al Garver |
Gregg Musiker, Peter Webb, Franco Saliola, Charles Paquette, Alex Fink, Julie, Al Garver, |
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User stories__: __ attachment:quiver_representations.sage |
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Gregg Al Garver Weiwen Gu |
Gregg Musiker, Al Garver, Weiwen Gu, |
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Combinatorics ============= Alternating sign matrices ------------------------- Jessica Striker |
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====== | ------ |
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Jeremy L. Martin Anne Schilling Tom |
Could you please poset the trac ticket number here? I am very interested to see your work (Anne). Jeremy L. Martin, Anne Schilling, Tom, |
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Kevin | Kevin, |
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Review of what's missing from Stembridge's packages --------------------------------------------------- Alex, Drew, Thomas, Kevin |
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============================= | ----------------------------- |
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Jessica Striker Jeremy John^2 Charles? Kevin Thomas |
Jessica Striker, Jeremy, John^2, Charles?, Kevin, Thomas, |
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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) |
Wish List: * is_modular - Alex Csar * is_atomic - Alex Csar * is_semimodular - Alex Csar - adding functionality to poset elements--what does this mean? - iterate over lattices - zeta, order, characteristic polynomials * characteristic polynomial done naively * zeta polynomial from Stembridge's posets code * W polynomial coming--relabel the poset and then look at permutations - more examples of posets * Young diagrams - Kevin * Semistandard tableaux - Jessica/Julie * interval posets - graph_editor - disjoint union, ordinal sum, product - make dual poset function work properly for lattices (it seems to break the join) |
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cup products | cup products `trac #6102 <http://trac.sagemath.org/sage_trac/ticket/6102>`_ |
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how to represent (co-)homology classes? | how to represent (co-)homology classes? `trac #6100 <http://trac.sagemath.org/sage_trac/ticket/6100>`_ |
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Cohen-Macalaulay (http://trac.sagemath.org/sage_trac/ticket/11523) Fundamental Group |
Cohen-Macaulay (`trac #11523 <http://trac.sagemath.org/sage_trac/ticket/11523>`_, needs review) Fundamental Group (should not be too hard, using the code from `trac #12339 <http://trac.sagemath.org/sage_trac/ticket/12339>`_) |
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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) |
is_pseudo-manifold (`trac #13226 <http://trac.sagemath.org/sage_trac/ticket/13226>`_, needs review) triangulate complex projective space (research problem; see `mathoverflow <http://mathoverflow.net/questions/20664/why-is-complex-projective-space-triangulable>`_) |
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- induced map on homology (high priority) | - fix bug for map induced by map of simplicial complexes: see `trac #13220 <http://trac.sagemath.org/sage_trac/ticket/13220>`_, positive review. - induced map on homology (high priority) `trac #6101 <http://trac.sagemath.org/sage_trac/ticket/6101>`_ |
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Peter webb | Peter Webb, |
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Coxeter groups, Hecke algebras, Crystals, ... ============================================= Crystals -------- (`trac #12251 <http://trac.sagemath.org/sage_trac/ticket/12251>`_, positive review) Anne Schilling, Mark Shimozono, Julie, Dan Bump, Ben Brubaker, Arthur Lubovsky Extended Affine hecke algebras / weyl groups -------------------------------------------- Non symmetric Macdonald polynomials & friends in general types Mark, Nicolas, Anne, Dan, Ben, Daniel Integration of (affine) symmetric group and Coxeter groups ---------------------------------------------------------- Alex Csar, Tom Denton, Holly Complex reflexion groups ------------------------ Alex Miller Schubert Calculus ----------------- Mark, Alex, Nicolas, Kaisa, Yasuhide, Tom Grothendieck polynomials / ... ------------------------------ Kaisa / Nicolas; checking out with Viviane's code Mark Shimozono, Jessica Striker Statistics on permutations -------------------------- Kim2 Matroids -------- Jeremy, Vic I learned that there is a matroid project well underway already: see `trac #7477 <http://trac.sagemath.org/sage_trac/ticket/7477>`_ and/or the Google group `sage-matroid <https://groups.google.com/group/sage-matroid>`_. -- Jeremy |
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John Graded Algebras =============== Franco John Partition algebras and their reps ================================= George |
John: - build the documentation in parallel (`trac #6495 <http://trac.sagemath.org/sage_trac/ticket/6495>`_) needs review - use MathJax by default when building the documentation (`trac #13143 <http://trac.sagemath.org/sage_trac/ticket/13143>`_) needs review Sagetex ------- Nicolas, Dan Misc ==== |
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======================== 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 |
------------------------ Nicolas, Franco, Dan, Gregg Anne (`trac #12251 <http://trac.sagemath.org/sage_trac/ticket/12251>`_, positive review), (`trac #13224 <http://trac.sagemath.org/sage_trac/ticket/13224>`_, positive review) (`trac #13222 <http://trac.sagemath.org/sage_trac/ticket/13222>`_, positive review) |
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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 |
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{{http://garsia.math.yorku.ca/~zabrocki/pics/sagedays40.jpg}} |
Sage Days 40 Coding Sprint Projects
For the main Sage Days 40 wiki page go here.
Below is a list of proposed projects.
Symmetric functions and Hopf algebras
Refactoring and extensions to symmetric functions / KSchur
Anne Schilling, Mike Zabrocki, Dorota
See also the review of Stembridge's packages below
Arithmetic dynamics & symmetric functions
Ben Hutz
Refactoring and extensions to Hopf algebras
Anne Schilling, Mike Zabrocki, John, Franco
Graded Algebras
Franco, John
Hopf algebras on graphs
Jeremy
NCSF/QSYM
Chris, Mike, Holly, Dorota, Franco, Nicolas?
Partition algebras and their reps
George
Quiver representations
Gregg Musiker, Peter Webb, Franco Saliola, Charles Paquette, Alex Fink, Julie, Al Garver, Emily Gunawan
User stories:
Clusters algebras from surfaces
Gregg Musiker, Al Garver, Weiwen Gu, Emily Gunawan
Combinatorics
Alternating sign matrices
Jessica Striker
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.)
Could you please poset the trac ticket number here? I am very interested to see your work (Anne).
Jeremy L. Martin, Anne Schilling, Tom, Lauren
- Tutte Polynomial
Kevin, Thomas
Review of what's missing from Stembridge's packages
Alex, Drew, Thomas, Kevin
Posets & Simplicial complexes
Demo including facade posets: Kim Vic
Jessica Striker, Jeremy, John^2, Charles?, Kevin, Thomas, Alex Csar?
Wish List:
- is_modular - Alex Csar
- is_atomic - Alex Csar
- is_semimodular - Alex Csar
- adding functionality to poset elements--what does this mean?
- iterate over lattices
- zeta, order, characteristic polynomials
- characteristic polynomial done naively
- zeta polynomial from Stembridge's posets code
- W polynomial coming--relabel the poset and then look at permutations
- more examples of posets
- Young diagrams - Kevin
- Semistandard tableaux - Jessica/Julie
- interval posets
- graph_editor
- disjoint union, ordinal sum, product
- 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 trac #6102
cohomology operations
how to represent (co-)homology classes? trac #6100
links (already done)
stars
Cohen-Macaulay (trac #11523, needs review)
Fundamental Group (should not be too hard, using the code from trac #12339)
is_shifted
is_pseudo-manifold (trac #13226, needs review)
triangulate complex projective space (research problem; see mathoverflow)
chain complexes:
- fix bug for map induced by map of simplicial complexes: see trac #13220, positive review.
- induced map on homology (high priority) trac #6101
- mapping cone
- tensor product
- Tot of a bicomplex
- filtered chain complexes and the associated spectral sequence?
Topological structures & categories & their reps
Peter Webb, John
Coxeter groups, Hecke algebras, Crystals, ...
Crystals
(trac #12251, positive review)
Anne Schilling, Mark Shimozono, Julie, Dan Bump, Ben Brubaker, Arthur Lubovsky
Extended Affine hecke algebras / weyl groups
Non symmetric Macdonald polynomials & friends in general types
Mark, Nicolas, Anne, Dan, Ben, Daniel
Integration of (affine) symmetric group and Coxeter groups
Alex Csar, Tom Denton, Holly
Complex reflexion groups
Alex Miller
Schubert Calculus
Mark, Alex, Nicolas, Kaisa, Yasuhide, Tom
Grothendieck polynomials / ...
Kaisa / Nicolas; checking out with Viviane's code Mark Shimozono, Jessica Striker
Statistics on permutations
Kim2
Matroids
Jeremy, Vic
I learned that there is a matroid project well underway already: see trac #7477 and/or the Google group sage-matroid. -- Jeremy
Sage Documentation
John:
- build the documentation in parallel (trac #6495) needs review
- use MathJax by default when building the documentation (trac #13143) needs review
Sagetex
Nicolas, Dan
Misc
Get my patches into Sage
Nicolas, Franco, Dan, Gregg
Anne (trac #12251, positive review), (trac #13224, positive review) (trac #13222, positive review)
Interface to Gfan and version update
Marshall Hampton