Well, I'm flattered that you liked it so much.  I think it should be
restructured a little, though, if it is to be included anywhere (I
didn't write it with documentation in mind, just as a response to some
of the things that were said in this thread).  And I do think that a
document describing how to best deal with removable singularities in
SymPy would be helpful.

So feel free to throw something up on the wiki.  You can think of the
wiki as a breeding grounds for documents that can eventually go into
the main docs when they are matured.

If anyone's interested, I did start writing up my thoughts about
automatic simplification a while back
(https://github.com/sympy/sympy/wiki/Automatic-Simplification).  It's
still a work in progress, though.  And it's just my opinion, so don't
take it as the final word on anything.

Aaron Meurer

On Wed, Jan 11, 2012 at 7:56 PM, Alexey U. Gudchenko <[email protected]> wrote:
> 12.01.2012 01:56, [email protected] пишет:
>> What about just adding the last post by Aaron to the page about pitfalls
>> (or another page) and fixing
>> http://code.google.com/p/sympy/issues/detail?id=2978 (so x**2.0/x
>> automatically simplifies to x**1.0)?
>>
>> I agree that sympy strikes a good balance and I certainly think that in
>> most of our users work x**2.0/x is the same as x**1.0.
>>
>> And the additional argument about how slow it will be to check all those
>> assumptions is pretty convincing.
>>
>
> This letter is vary significant and clarify behavior of SymPy which
> concerns with those topics:
>
>        automatic expressions transformation (SymPy policy)
>        simplify
>        singularities and continuity
>        core description - (Mul.flatten policy)
>
> Of course we must add this to the wikipages and/or to the documentation.
>
> --
> Alexey U.
>
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