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Re: Modern Differential Geometry for Mathematica 9

• To: mathgroup at smc.vnet.net
• Subject: [mg129409] Re: Modern Differential Geometry for Mathematica 9
• From: Murray Eisenberg <murray at math.umass.edu>
• Date: Fri, 11 Jan 2013 22:24:04 -0500 (EST)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com
• Delivered-to: l-mathgroup@wolfram.com
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• References: <20130111024257.4D448694C@smc.vnet.net>

How about the following?

(1) Identifying the exact version number of Atlas 2 to which you refer 
-- in your message and on the DigiArea web site?

With my licensed copy of Atlas 2, in the Documentation Center page 
guide/InstalledAddOns, I see that I am running Atlas version 2.3.0. And 
the "Update" button in the "Manage" section for that item on the page is 
not highlighted, so _presumably_ I have the current version.

(2) Providing an easy way to tell within Atlas what the version is.

In fact, it should be a "law" for any commercial or free add-on: within 
the context of the add-on, include a variable that returns the version 
number. E.g.:

  $AtlasVersion

or

  $Atlas`Version

I tried some poking around in the Atlas add-on files themselves, but in 
Atlas.m I see:

(* :Package Version: 2.0 *)

(* :Copyright: Copyright 2011, DigiArea, Inc. *)

(* :Mathematica Version: 8.0 *)

So how am I supposed to tell easily what version is really there?

Add-on providers, especially commercial ones, should be subject to 10 
lashes from a wet spaghetti if they fail to include such a function.
  
On Jan 10, 2013, at 9:42 PM, Sandra <sandra at digi-area.com> wrote:

> The Atlas project team is pleased to announce the release of the 
Mathematica 9 version of the Atlas 2 for Mathematica package.
>
> Atlas 2 for Mathematica is the add-on for doing modern differential 
geometry calculations.
>
> The tool is available on DigiArea website and Wolfram Research 
website.
> http://www.wolfram.com/products/applications/atlas2/
> http://digi-area.com/Mathematica/atlas/
>
> Some of the main features:
> - Calculations are coordinate free - calculations are performed in 
terms of tensors, vectors and p-forms, but not their components!
>
> - Standard differential geometry notations - the tool uses standard 
differential geometry notations for exterior derivative, tensor product 
etc. which
>
> allows you to see the same results/formulas on the screen and in your 
textbooks.
>
> - Visualization of n-dimensional objects - the tool provides useful 
Visualize function to visualize n-dimensional differential geometry 
objects.
> You can explore more about the visualization here:
> http://digi-area.com/Mathematica/atlas/index.php#AtlasVisualization
>
> - Differential Geometry Library - the tool provides access to 
Differential Geometry Library directly from Mathematica. The library has 
over 550 objects for
>
> differential geometry and its applications. There are hundreds of 
Exact Solutions of Einstein's Field Equations. Atlas Palette (see below) 
calculates any of
>
> the objects/Exact Solutions just in seconds.
> You can explore Differential Geometry Library here:
> http://digi-area.com/DifferentialGeometryLibrary/
>
> - Atlas palette - Mathematica palette that allows you to manipulate, 
visualize and calculate entities for any of the objects from the 
library.
> http://digi-area.com/Mathematica/atlas/index.php#AtlasPalette
>
> - Atlas Wizard - Mathematica wizard that solves differential geometry 
problems on the fly even if you have a little knowledge in the topic.
> http://digi-area.com/Mathematica/atlas/index.php#AtlasWizard
>
> The tool works with Mathematica 8 and Mathematica 9.

---
Murray Eisenberg                                    
murray at math.umass.edu
Mathematics & Statistics Dept.      
Lederle Graduate Research Tower            phone 413 549-1020 (H)
University of Massachusetts                               413 545-2838 (W)
710 North Pleasant Street                         fax   413 545-1801
Amherst, MA 01003-9305

• References:
  • Modern Differential Geometry for Mathematica 9
    • From: Sandra <sandra@digi-area.com>