Date: Jun 25, 2013 2:52 AM
Author: Andrzej Kozlowski
Subject: Re: Automatic Mathematica Updates?

On 24 Jun 2013, at 04:55, Roland Franzius <roland.franzius@uos.de> wrote:

> Am 22.06.2013 09:28, schrieb djmpark:

>> Is such an automatic update possible? If so, are there some settings that

>> are necessary? Is "local install with license server" any different than

>> regular user installation?

>>

>>

>> David Park

>> djmpark@comcast.net

>> http://home.comcast.net/~djmpark/index.html

>>

>>

>> From: Roland Franzius [mailto:roland.franzius@uos.de]

>>

>>

>> Remains to be noted that suddenly today in the morning my Mathematica 8

>> (local install with license server) seems to have been updated over the

>> internet with respect to this integral.

>

>

> Of course, if you have activated internet access and automatic updates

> in the preferences tab/Access to Internet/Wolfram Alpha.

>

> Test:

>

> It is working even on sundays (23.6, 4.00 UTC)

> and now we get a reasonable result in an acceptable time.

>

> In[21]:=

> Timing[ Integrate[

> Sin[x/2]^2/x^2/(x^2 - 4 \[Pi]^2)/(x^2 +

> b^2)^2, {x, -\[Infinity], \[Infinity]}, Assumptions -> b > 0]]

>

> Out[21]= {32.074, -((

> b^5 + 2 b^2 (-5 + 4 b) \[Pi]^2 + 8 (-3 + 2 b) \[Pi]^4 +

> 2 E^-b \[Pi]^2 (b^2 (5 + b) + 4 (3 + b) \[Pi]^2))/(

> 8 b^5 \[Pi] (b^2 + 4 \[Pi]^2)^2))}

>

> --

>

> Roland Franzius

>

>

I can confirm that this indeed works with regular user installation (Mathematica 9.01). Thanks a lot - it's quite a discovery and, I think, it (probably) renders obsolete many of the complaints concerning WRI's update policies that have appeared in the past on this forum.

I, at least, am impressed.

Andrzej Kozlowski