On Apr 20, 2011, at 5:15 PM, Vinzent Steinberg wrote: > On Apr 20, 8:55 pm, "Aaron S. Meurer" <[email protected]> wrote: >> The Solution class is indeed a good idea. >> >> I think it would be best to have a unified data structure independent of the >> number of solutions. The reason is that it is not clear from the outset how >> many solutions an equation or system of equations will have. That is why I >> think it would be better to have a list always or a dictionary always (or a >> list of dictionaries always). The list of dictionaries idea is one of the >> better ones, in my opinion. > > Should the Solution() class also represent subspaces which solve e.g. > an undetermined linear equation system? > > Vinzent
Did you mean "underdetermined"? If so, then I think yes. As I was saying in a previous email, the cleanest way to handle a solution with parameters will be a class like this, I think. For example, the parameters will have to be dummy variables, so they will have to be accessible by themselves, i.e., we would have to return them along with the solution somehow. This can get messy if we return something using just builtin data types. And you should be able to pass a Solution class to solve along with some additional constraints to solve for some of the parameters. That sort of thing should be useful when solving ODEs or PDEs, for example. Aaron Meurer -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
