From: Jiaqi Zhang <jiaqi2@clemson.edu>
Date: Thu, 3 Feb 2022 15:41:24 +0000 (-0500)
Subject: fix a formula
X-Git-Tag: v9.4.0-rc1~532^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F13332%2Fhead;p=dealii.git

fix a formula
---

diff --git a/include/deal.II/grid/grid_generator.h b/include/deal.II/grid/grid_generator.h
index e42073c3c7..267a92dad4 100644
--- a/include/deal.II/grid/grid_generator.h
+++ b/include/deal.II/grid/grid_generator.h
@@ -1618,8 +1618,8 @@ namespace GridGenerator
    *
    * @f[
    *     r = r_{\mathrm{inner}} + (r_\mathrm{outer} - r_\mathrm{inner})
-   *     \frac{1 - \tanh(\mathrm{skewness}(1 - k/\mathrm{n\_shells}))}
-   *          {\tanh(\mathrm{skewness})}
+   *     \left(1 - \frac{ \tanh(\mathrm{skewness}(1 - k/\mathrm{n\_shells}))}
+   *          {\tanh(\mathrm{skewness})}\right)
    * @f]
    *
    * where @p skewness is a parameter controlling the shell spacing in the