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Re: Re: Piecewise symbol in 5.1

  • To: mathgroup at
  • Subject: [mg52331] Re: [mg52313] Re: Piecewise symbol in 5.1
  • From: John Fultz <jfultz at>
  • Date: Tue, 23 Nov 2004 02:12:51 -0500 (EST)
  • Reply-to: jfultz at
  • Sender: owner-wri-mathgroup at

It sounds like the installation of fonts in an upgrade scenario isn't as 
reliable as it should be.  What various people are describing here is that 
some or all of the Mathematica fonts being used are coming from their 5.0 
(or possibly earlier) installation rather than the 5.1 installation.  We 
are investigating the problem to try to determine under exactly what 
circumstances this happens and how to fix it.

I'm including some instructions below on how to fix the problem under 
Windows.  If you have difficulties, or are experiencing problems on 
platforms other than Windows, you should contact Technical Support at 
support at

First, to determine if you have a problem, copy and paste the following 
into 5.1...

\[ConjugateTranspose] \[Transpose] \[Piecewise]

You should see characters which look kind of like a plus, a T, and a left 
brace.  If you don't, try rebooting your system.  If the problem still 
persists, then...

* Open the Fonts control panel.
* Find all fonts which begin with the name "Mathematica" and delete
  them (if you find fonts beginning with "Math", you shouldnt' delete
* Double-check to make sure they're all gone.  This is important, since
  occasionally, multiple copies of a font can be installed, and a font
  can reappear after you deleted it.  If there are some fonts which
  refuse to go away, reboot the system and try again.
* In the Mathematica 5.1 installation directory, which is probably...
      C:\Program Files\Wolfram Research\Mathematica\5.1
  open the subdirectory
* Select all of the files in this directory, and drag them to the Fonts
  control panel window.  You'll briefly get a progress dialog indicating
  that the fonts are being installed.


John Fultz
jfultz at
User Interface Group
Wolfram Research, Inc.

On Mon, 22 Nov 2004 01:28:44 -0500 (EST), Steve Luttrell wrote:
> That's what I see as well (Mathematica 5.1 on Windows XP), except that
> the
> long vertical bar has a small empty rectangle at its upper right corner
> (occasionally the rectangle is replaced by a small T). I'm fairly sure
> this
> isn't intentionally a new notation, so there must be a font problem
> somewhere.
> Steve Luttrell
> "Murray Eisenberg" <murray at> wrote in message
> news:cnq2vo$2fs$1 at
>> In the downloadable AddendumV51.pdf, the display of a piecewise
>> definition, e.g., of
>> Piecewise[{{x < 0, -1}, {x >= 0, 1}}]
>> is shown with a large curly brace to the left of the pieces.  But in my
>> Mathematica 5.1 under Windows 5.1, I see a long vertical bar.
>> What do you see?
>> --
>> Murray Eisenberg                     murray at
>> Mathematics & Statistics Dept.
>> Lederle Graduate Research Tower      phone 413 549-1020 (H)
>> University of Massachusetts                413 545-2859 (W)
>> 710 North Pleasant Street            fax   413 545-1801
>> Amherst, MA 01003-9305

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