{{{#!rst Sage Days 49 Coding Sprint Projects =================================== **For the main Sage Days 49 page go** `here `_ Below is a list of proposed projects. Please edit and add your projects! Combinatorics ------------- * Implementing Stanley chromatic symmetric function for posets Mathieu, Eric, Alejandro, Chris, Nathann, Yan * Implementing boards for rook placements, Le diagrams (#14127) * implementing Le diagrams * include CombinatorialMaps if possible * adding documentation and doctests Alejandro, Kevin (testing/doctests), Bruce, Salvatore, Emily, Federico * Flow polytopes from permutation matrices and alternating sign matrices (#14654) Jessica, Alejandro, Nathann, Emily, Laura * Implementation of k-tableaux and k-charge (#12250, #14776) Anne, Mike, Tom D, Nate, Avi * Combinatorial actions and orbit averages on posets, order polytopes, and rational functions Tom Roby, Darij, Jessica, Kevin, Emma, Emily * Multivariate power series / lazy Marguerite, Mathieu, Florent, Marc * Hypergraph visualization Nathann * Combinatorial Species Martin Rubey, Bruce, Mike, Florent, Tom D., Marguerite Thursday and Friday only * code cleanup * generation of unlabelled objects for composition and functorial composition via a group action framework * multisort species (multivariate formal power series would be useful for that) * add code by Andrew for Gamma-species * support operations from symmetric function code for cycle index series * Conclude `OEIS `_ ticket #10358 (rebase after #13701, last doctests, and make urls clickable from the notebook ThierryMonteil, Eric, Chris, Salvatore * More switches from CombinatorialClass to category framework Travis, Mike, Anne, Mathieu, Simon, Florent * Implement LaTeX options for parking functions Mike, Jean-Baptiste, Tom D. * Implement composition tableaux as an enumerated set (finite? with grading?) Mike, Chris, Jessica, Austin, Tom D., Elizabeth * Beef up NSym/QSym functionality - dual bases, quasi-Schur and dual's, basis by Pieri rule, map to free algebra, P-partitions (#14136), Hazewinkel's lambda-Lyndon basis, quasi-Schurs, expansion in non commutative variables, ... Mike, Matthieu Deneufchâtel, Darij, Chris, Simon, Anne, Meesue * Ribbon graphs Bruce, Emily, Chris * Finish affine symmetric group patch (#12940) Done! Tom D., Chris, Anne * Implement BWSym and related Hopf algebras Olivier Mallet, Ali Chouria, Jean-Baptiste, Florent, Mike * Posets - Close outstanding tickets, optimize counting linear extensions, add poset examples (absolute order on symmetric group, etc.) Kevin, Nathann, Mathieu, Florent, Anne, Jessica, Tom R., Darij * Infinite root system: construction, display Vivien, Nicolas, Salvatore, William, Elizabeth, Ben, Laura Representation Theory --------------------- * Finalize non-symmetric Macdonald polynomial patch (#14102) Anne, Nicolas, Mike * Implement monomial crystals (#14759) Done and merged! Ben, Travis, Arthur, Nicolas, Anne * Refactor and speedup of all crystals code (#14516 Done!, #14686, more to come) Travis, Ben, Nicolas, Anne * Make progress on fixing/reviewing rigged configurations patches (#13871, #13838, #13872) Anne, Travis, Chris * Representations of quivers and quiver algebras: Finish refactoring Jim's code (#12630) Simon, Salvatore, Nicolas, Aladin, Florent, Ben, Tom R., Mathieu Hyperplane arrangements ----------------------- Tom, William, Vivien, Nathann, Steven, Alejandro Categories and infrastructure ----------------------------- Nicolas, Simon, Travis, Florent * Review #10963 more functorial constructions * Review #11111 finite dimensional modules * Nested class name mangling: Understand why building the pdf documentation hangs with the patch from #9107 * Plan the follow ups Documentation ------------- * Reorganize combinat documentation Travis, Nathann, Florent, Mike, Simon, Nicolas, Anne * Update French translation of the tutorial Marc Teaching -------- * Going through "Topics in Algebraic Combinatorics" and see how much is in Sage / would be useful for teaching Tom^2, Alejandro, Elizabeth, Jessica, Aladin, Austin, Laura `(Worksheet!) `_ * Update/fix doctests from the French Sage book * Marc, Nathann, Nicolas, Guillaume: fix the web version to make sure its 100% consistent with the paper version * Cleanup Map-Reduce & other parallelization tools in Sage Florent, Jean-Baptiste, Matthieu Other ----- * Finish CFF #14567 review (ThierryMonteil) * Trac-ify some of the bugs found via ask.sagemath.org and discuss about better integration between those two useful tools (ThierryMonteil) * Work on making RIF and CIF more reliable (ThierryMonteil) * Add parallel cloning to `Sage Debian Live `_ USB key (ThierryMonteil) * `FindStat `_ work Travis, Viviane, Chris, Jessica, Jean-Baptiste }}}