Re: Bug in Mathematica 8 vs Mathematica 7: SeriesData
- To: mathgroup at smc.vnet.net
- Subject: [mg116858] Re: Bug in Mathematica 8 vs Mathematica 7: SeriesData
- From: Fabian Buehler <buehler.fabian at gmx.de>
- Date: Wed, 2 Mar 2011 04:36:52 -0500 (EST)
- References: <ikihg0$7qt$1@smc.vnet.net>
Hello Gideon,
> For example, if you want a multiple expansion of a metric in general
> relativity, it is quite simple to input:
> SeriesData[r, Infinity, {-1, -2, -3}, 0, 3, 1]
> In Mathematica 7 this line is accepted as is, without any error
> messages or problems.
>
> Yet, try this in Mathematica 8. You will get the following error
> message:
> SeriesData::sdatv: "First argument 1/r is not a valid variable."
The line works well for me with Mathematica 8 on a Linux system:
In[2]:= SeriesData[r, Infinity, {-1, -2, -3}, 0, 3, 1]
Out[2]= -1-2/r-3/r^2+O[1/r]^3
Fabian