= *-Combinat 2009 = International Sage Workshop on '''F'''ree and '''P'''ractical '''S'''oftware for '''A'''lgebraic '''C'''ombinatorics Dates: July 25-29 Location: RISC, Linz, Austria This event will follow [[http://www.risc.uni-linz.ac.at/about/conferences/fpsac2009/|FPSAC'09]], and be part of [[http://www.risc.uni-linz.ac.at/about/conferences/summer2009/|RISC's summer 2009]]. == Goals == * get new users and developers on board, especially from the FPSAC community * help former MuPAD-Combinat users to switch to Sage * developers meeting == Program == ||||||Saturday, July 25|| ||<|2> 9:30-10:30 ||<|2> Burcin Erocal and FrancoSaliola || Introduction to Sage|| || an overview talk about Sage, which explains the history and motivation for the project, demonstrates some key features of Sage, and discusses where we are going next. It will be accessible to people in all research areas and assumes no prior experience with Sage. || ||<|1>10:30-10:45 || Coffee Break || || ||<|2>10:45-11:45 ||<|2> FlorentHivert and NicolasThiéry || Introduction to Sage-combinat|| || an overview talk about Sage-combinat || ||<|1>11:45-13:30 || Lunch Break || || ||<|2>13:30-15:00 ||<|2> FrancoSaliola and NicolasThiéry || Hands on Tutorials|| || ?summary? || ||<|1>15:00-15.30|| Coffee Break || || ||<|1>15:30-16:00|| JasonBandlow || Symmetric Functions|| ||<|2> 16:00-17:00 ||<|2> Burcin Erocal || How to get started developing Sage|| || a summary of relevant bits and pieces for developing software with Sage || ||<|1>17:15- || Coding Sprint Organization || Short self introductions, [[/projects|list of project ideas]] and people willing to work on them || ||||||Sunday, July 26|| ||<|2> 9:30-12:00 ||<|2> Informal Sage-Combinat lab || come work on your own problem with experts at your full disposition || || ?list of possible topics? || ||<|1>12:00- || Free afternoon || || ||||||Monday, July 27|| ||<|1>9:30-10:30||<|1>FrancoSaliola|| Posets and words|| ||<|1>10:30-10:45|| Coffee Break || || ||<|2>10:45-12:00||<|2>Carsten Schneider and Burcin Erocal|| Difference Fields and Symbolic Summation in Sage || || ?summary? || ||<|1>12:00-13:30 ||<|1>Lunch Break || || ||<|2>13:30-14:30||<|2>DanDrake || Combinatorial generation by backtracking || ||?summary?|| ||<|1> 14:30-15:30 || FlorentHivert|| Version control with mercurial for LaTeX and programming || ||15:30-16:00||Tea Time|| || ||<|2> 16:00-17:00 ||<|2> Ralf Hemmecke and FlorentHivert || Combinatorial species and tree-like structures || || Practical use in [[http://www.risc.uni-linz.ac.at/people/hemmecke/aldor/combinat/|Aldor-Combinat]] and Sage || ||<|1>17:00-||Coding Sprint Status Reports|| || ||||||Tuesday, July 28|| ||<|1>11:00-12:00 || AnneSchilling and NicolasThiéry|| Root systems, coxeter groups and [[http://www.math.ucdavis.edu/~anne/Crystal_demonstration.sws|crystals]] || ||<|1> 12:00-13:30 || Lunch Break || || ||<|2> 13:30-15:00 ||<|2> NicolasThiéry || Categories for the working mathematical programmer || || Implementing algebraic structures in Sage, using parent, elements, and categories|| ||<|1>15:00-15:30 || Tea Time || || ||<|1> 15:30-16:30 || FlorentHivert and NicolasThiéry || Implementing Hopf algebras || ||<|1> 17:00- || Coding Sprint Status Reports || || ||||||Wednesday, July 29|| ||<|1> 9:30-10:30 || || Sharing experimental code with the Sage-Combinat patch server|| ||<|1> 10:30-11:00 || Veronika Pillwein || CAD and Special Function Inequalities || ||<|1> 11:00-12:00 || Coding sprints || || ||<|1> 12:00-13:30 || Lunch Break || || ||<|1> 13:30- || Coding sprints || || ||||||Thursday, July 30|| ||<|1> 9:30-12:00 || Coding sprints || || ||<|1> 12:00-13:30 || Lunch Break || || ||<|1> 13:30- || Coding sprints || || ||<|1> 14:00- || Coding Sprint wrapup || || == Projects == * [[/projects|Project page]] == Organizers == * NicolasThiéry * Burcin Erocal - burcin@erocal.org * Ralf Hemmecke - hemmecke@risc.uni-linz.ac.at * [[MichaelAbshoff|Michael Abshoff]] == Registration == Registration is free, but please register on: http://www.conferences.jku.at/riscsummer2009/e2570/index_eng.html. Very convenient and reasonably priced rooms are available for reservation from the same site, but may run out. Register early! == Prerequisites == All attendees are expected to have Sage >= 4.1 and the Sage-Combinat patches installed on their laptops. If you do not plan to bring a laptop, please contact the organizers, and we will have a terminal setup for you. Please come see us for help during FPSAC if you encounter any problem! Sage 4.1 will be available shortly from: http://www.sagemath.org/download.html See http://wiki.sagemath.org/combinat/MercurialStepByStep for the installation instructions of Sage-Combinat. On UNIX/Mac, it boils down to running the following command in a terminal: {{{ sage -combinat install }}} == T-Shirts == If you would like to get the T-Shirt for this workshop (~$10), please write the size below before July 11th. Here is the current design (suggestions welcome): [[attachment:front-nt.png]] [[attachment:back-nt-2.png]] And if you wonder about the meaning: ``Sage is the powerful propeller allowing us to soar high to our [[http://you-tube.com/watch?v=860pEuwHgCw|Castle in the Sky]]. Our hope is that in return our scouting will help drive the car to new horizons``. === Registered Participants === * Jason Bandlow * NicolasBorie (T-Shirt size L) * Adrien Boussicault * Mahir Bilen Can * Hayat Cheballah * Anders Claesson * DanDrake (T-shirt size M) * Burcin Erocal (T-Shirt sizes M + S) * Valentin Féray * Christoph Fuerst * Ralf Hemmecke * FlorentHivert * Alain Lascoux * Conrado Martinez * Peter McNamara (leaving Monday afternoon) * Philippe Nadeau * Yasuhide NUMATA * Steven Pon * FrancoSaliola (leaving 28 July) * Anne Schilling (T-Shirt size S) * Flavia Stan * Jessica Striker * Hossein Teimoori * NicolasThiéry (T-Shirt size M) * Haseeb Ul Haq * Zafeirakis Zafeirakopoulos == Preliminary list of short tutorials == Besides the main general-purpose Sage-Combinat tutorial, we will run short tutorials focused on specific features, with a (flexible) format like 10 minutes of presentation; 20 minutes of exercises. Here are some ideas. Please feel free to suggest others, especially around some features you developed yourself! * Symmetric Functions, Non Commutative Symmetric Functions, using algebras with several basis (Jason? Nicolas?) * Implementing enriched enumerated sets, (e.g. how to enrich the partitions of 5 with a semi-groups structure) (Florent?) * Implementing new combinatorial objects (?)