Christopher Smith

I don't find `''.join` at all. So if we don't create strings anywhere and we don't allow strings as args, then the only place we would do `int(str)` is in...

**Blockedon:** -2712 Original comment: http://code.google.com/p/sympy/issues/detail?id=2914#c1 Original author: https://code.google.com/u/117933771799683895267/

> please guide me on what needs to be done. see [here](https://github.com/sympy/sympy/issues/6013#issuecomment-343329891)

Would it work to have a Grid class which implements only storage and indexing and then Matrix derives from that and implements its own methods (and constraints on contents)?

Is the goal here to make memory, not time, the limiting factor with hopes that there would be no need for a limit on `str(int)` conversion to protect against DoS...

I approve the version and agree to 4.

The code has been updated, @makslevental : is this what you meant? ```python >>> solve_linear_inequalities([x>0,x>y,x

It doesn't look like there are currently any unfinished tasks...the OP is just a holding place for such things when they arise.

This looks ok to me (though I am sure I could be missing something in the Complements and ConditionSet logic. But I don't see a reason to hold this up....

> The rounding errors of floats can cause problems in `linsolve()` I think this is the classic complaint for which we must "refuse the temptation to guess". `nsimplify` is an...