Groups > comp.soft-sys.math.mathematica > #2861

Dt@x@1

From	Chris Chiasson <chris.chiasson@gmail.com>
Newsgroups	comp.soft-sys.math.mathematica
Subject	Dt@x@1
Date	2011-06-01 08:33 +0000
Organization	Steven M. Christensen and Associates, Inc and MathTensor, Inc.
Message-ID	<is4tgc$b3t$1@smc.vnet.net> (permalink)

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Why does Dt@x@1 return zero? I would expect it to return unevaluated.
I noticed this when trying to use expressions similar to D[x@1,y] and
kept receiving zero as the answer. The same "problem" occurs with
multidimensional input.

What should I be doing if I want to generate and symbolically work
with the Jacobian of a multidimensional coordinate transformation? Do
I have to generate unique symbols for every dimension?

I noticed that in the Jacobian article on Mathworld, the notebook uses
Subscript in the symbolic expressions (eww).

In[41]:= $Version

Out[41]= "8.0 for Microsoft Windows (32-bit) (November 7, 2010)"

Thanks,
--
http://chris.chiasson.name

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Thread

Dt@x@1 Chris Chiasson <chris.chiasson@gmail.com> - 2011-06-01 08:33 +0000
  Re: Dt@x@1 "Nasser M. Abbasi" <nma@12000.org> - 2011-06-01 10:57 +0000
    Re: Dt@x@1 Chris Chiasson <chris.chiasson@gmail.com> - 2011-06-02 11:15 +0000
    Re: Dt@x@1 magma <maderri2@gmail.com> - 2011-06-02 11:14 +0000
    Re: Dt@x@1 Chris Chiasson <chris.chiasson@gmail.com> - 2011-06-02 11:14 +0000
  Re: Dt@x@1 Roland Franzius <roland.franzius@uos.de> - 2011-06-02 23:12 +0000
    Re: Dt@x@1 Chris Chiasson <chris.chiasson@gmail.com> - 2011-06-04 10:20 +0000

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