simplify() is kind of a "catch all" simplification function, so
perhaps it should include refine() as well. refine() is still
relatively new, so I don't think it's been fleshed out beyond
"assumptions based simplification".

Aaron Meurer

On Jun 22, 2012, at 4:52 PM, "[email protected]"
<[email protected]> wrote:

> I want this: `Simplify[ArcTan[Tan[x]], {x>0, x<1}] returns x`.
>
> I can easily add it to refine(). However it seems bizarre to use both
> simplify and refine at the same time (I also need simplify)... Does
> this mean that the best course of action is for me to start using
> exclusively `refine` and spending time on expanding it where simplify
> works better :(?
>
> What is the definition of simplify and of refine?
>
> Is refine expected to do stuff that trigsimp does for instance?
>
> Is simplify expected to look at is_real attributes for instance or is
> it only for completely general simplifications?
>
>
> As I see it I imagine a future where refine deals only with additional
> assumptions (and is called by simplify which does not care about
> assumptions and does only very general simplifications).
>
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