to tilde or not to tilde

Thomas Schneider schneidt at
Sun Oct 6 22:39:52 CEST 2019

Dear TexHaxers:

In a paper we are finishing, my co-author, a physicist, added a tilde
'~' in front of the period '.' or comma ',' at the end of equations,
for example

A = \pi r ^2 ~.

He says ``It is a stylistic convention that some physicists use. But
it's not universal practice.''

Is it a typographically recommended practice or should it be avoided?

Here's a minimal example for you to try:

Here's an example without a tilde:
A = \pi r ^2.
Here's an example with a tilde:
A = \pi r ^2 ~. \\


  Thomas D. Schneider, Ph.D.
  Senior Investigator
  National Institutes of Health
  National Cancer Institute
  Center for Cancer Research
  RNA Biology Laboratory
  Biological Information Theory Group
  Frederick, Maryland  21702-1201
  schneidt at

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