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| Please add "sd91" as a keyword to any tickets you are working in during this week so they show up in this list: [[https://trac.sagemath.org/query?keywords=~sd91&col=id&col=summary&col=status&col=type&col=priority&col=milestone&col=component&order=status|sd91 Tickets]] | Please add "sd91" as a keyword to any tickets you are working on during this week so they show up in this list: [[https://trac.sagemath.org/query?keywords=~sd91&col=id&col=summary&col=status&col=type&col=priority&col=milestone&col=component&order=status|sd91 Tickets]] '''Lattice related projects''' |
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| * fix homomorphisms of abelian groups [[https://trac.sagemath.org/ticket/23703|#23703]] | * fix intersections of free_quadratic_modules and thus homomorphisms of abelian groups [[https://trac.sagemath.org/ticket/23703|#23703]] |
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| '''Point counting and zeta function projects''' * hypergeometric motives [[https://trac.sagemath.org/ticket/23671|#23671]] * get Edgar Costa's code for zeta functions of projective hypersurfaces into Sage [[https://trac.sagemath.org/ticket/23863|#23863]] |
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| * [[https://trac.sagemath.org/ticket/23376|#23376]] | * bugfix for Genera equality testing [[https://trac.sagemath.org/ticket/23376|#23376]] |
Sage Days 91: Open Source Computation and Algebraic Surfaces (Sept. 29 - Oct. 1, 2017)
Location: Banff International Research Station.
Schedule
https://www.birs.ca/events/2017/2-day-workshops/17w2677/schedule
Projects
Feel free to add suggestions
Please add "sd91" as a keyword to any tickets you are working on during this week so they show up in this list: sd91 Tickets
Lattice related projects
fix vector matrix multiplication for free module elements #23576
fix .annihilator() for the trivial abelian group #22720
fix intersections of free_quadratic_modules and thus homomorphisms of abelian groups #23703
implement finite bilinear/quadratic forms and make sure that the discriminant group has one #23699
- implement QQ/ZZ , QQ/2ZZ or QQ/nZZ as abelian groups. This is where finite quadratic/bilinear forms have values
- implement a class for (subgroups of) the orthogonal group of a finite bilinear/quadratic form and an algorithm to compute it
- diagonalization and isomorphism testing for finite quadratic/bilinear forms
- create a genus from a signature pair and a finite quadratic form
- create a finite quadratic form from a genus
- a latex representation for the genus using the Conway Sloane genus symbols
- a base class for the orthogonal group of a lattice
- a method to compute the orthogonal group of a positive definite lattice
Point counting and zeta function projects
hypergeometric motives #23671
get Edgar Costa's code for zeta functions of projective hypersurfaces into Sage #23863
Tickets needing review
To prepare for the workshop
Before the workshop, we recommend downloading and installing the latest version of the source code of Sage, opening a Sage trac account.