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3. The coloring is minimal by inclusion. That is, if we delete any subset of vertices of K_n (and any adjacent edges), then property 2 is violated  there will be at least one color class with one member.  3. The coloring is minimal by inclusion. That is, if we delete any subset of vertices of K_n (and any adjacent edges), then property 2 is violated  there will be at least one color class with one member. * ''Adam Getchell'':'''Nonlinear Dynamics in SAGE'''. Illustrate and solve solutions to nonlinear equations. Add basic cobweb diagrams support. Wrap Maxima's CTensor package and compare speed with SAGE's Christoffel symbol calculation in calculus/tests.py 
Sage days 9 Student Projects
Please add your project to this list. Follow the examples that are already there.
Mclean Edwards, Scott Zhou: BFGS Iterates. Plotting iterates, in an interactive manner, of the celebrated BFGS method for the minimization of nonconvex and convex functions. Comparison of sage, jyscript/piscript, and our own pythonbased solutions.
Jakub Marecek: Toy Integer Programming Solver. A very limited integer programming solver for instances with 3 variables, but complete with several primal heuristics in use today, and visualising the workings nicely. (Java & vtkHull?)
Further ideas: SVG and PDF Output for JyScript. A quick hack using Apache Batik (http://xmlgraphics.apache.org/batik/). TeX and PS and PDF Output for SAGE. A quick hack using Sketch (http://www.frontiernet.net/~eugene.ressler/).
Aurel Meyer: Symmetry groups of polytopes. Graphics to illustrate that all symmetry groups of regular polytopes are finite Coxeter groups.
Yair Go1dberg: 3D Graphing in PiScript. Plotting 3 dimensional functions in PiScript.
Steve Kieffer: Algebra sketches. Tools with which to produce sketches of a kind often drawn on blackboards to illustrate algebraic structures.
Michael Lamoureux: EasyBalls. A 2D animation of colliding balls, maybe with gravity, maybe with E&M if I can get the 3D in there.
Ryan Hoban: Hyperbolic Geometry. Using sage to draw geometric structures in the Hyperbolic plane.
Sébastien Labbé: Combinatorics on words.
 Use colors and @interact of sage to study equations on words.
[http://wiki.sagemath.org/Days9Projects?action=AttachFile&do=get&target=Equations_on_words_with_color.sws Equations_on_words_with_color.sws] (Next version of [http://code.google.com/p/sagewords/ sagewords package] needed to run it!!)
 Use jyscript and jython to create a java applet to illustrate Christoffel words
Add gridlines support for show() in sage. Franco Saliola improved *a lot* my initial patch by changing it all (!!) and added many options to make it work like in Matematica. See [http://trac.sagemath.org/sage_trac/ticket/3825 Ticket #3825]
 Use colors and @interact of sage to study equations on words.
Arnaud Bergeron: Better adaptive plotting in Sage. At William's request, I am working on better adaptive refinement for Sage's plot() command.
Avra Laarakker: Properties of Digit Sets and Dilation Matrices using Sage. Given a dilation matrix A, and a digit set D, want to see visually if a tiling of Z^n is possible.
Ignacio Rozada: Python and PDE's. Solving and plotting numerical solutions to reactiondiffusion partial differential equations on growing domains; a comparison between scipymatplotlib and matlab.
Zhivko Nedev: Encoding/Representing a class of combinatorial structures and making tools for their visualization and analysis. The comb. structure is a MINIMAL edge coloring of K_n, the complete graph, with the following properties:
 No two adjacent edges have the same color.
 Our coloring splits the set of edges of K_n into color classes; we require that every class has at least two members.
 The coloring is minimal by inclusion. That is, if we delete any subset of vertices of K_n (and any adjacent edges), then property 2 is violated  there will be at least one color class with one member.
Adam Getchell:Nonlinear Dynamics in SAGE. Illustrate and solve solutions to nonlinear equations. Add basic cobweb diagrams support. Wrap Maxima's CTensor package and compare speed with SAGE's Christoffel symbol calculation in calculus/tests.py
Adrian Belshaw: Unimodular Polynomials. Using Sage to draw unimodualr polynomials on the unit circle in the complex plane.