From: Martin Kronbichler <kronbichler@lnm.mw.tum.de>
Date: Tue, 6 Jul 2021 07:24:00 +0000 (+0200)
Subject: Changelog entry
X-Git-Tag: v9.4.0-rc1~1144^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d9a6a447683edc040a0ce88e9f939fe29b91463e;p=dealii.git

Changelog entry
---

diff --git a/doc/news/changes/incompatibilities/20210612MartinKronbichler b/doc/news/changes/incompatibilities/20210612MartinKronbichler
new file mode 100644
index 0000000000..cea7260a30
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+++ b/doc/news/changes/incompatibilities/20210612MartinKronbichler
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+Updated: FE_RaviartThomasNodal now uses a different polynomial space to allow
+for a simpler use for faces in non-standard orientation. The new polynomials
+are anisotropic tensor products of Lagrange polynomials on the points of a
+Gauss--Lobatto quadrature formula. This change leads to different entries in
+the matrices and constraints, for example, but as the resulting polynomial
+space spans the same polynomials, no change in accuracy should be expected.
+<br>
+(Martin Kronbichler, Katharina Kormann, Konrad Simon, 2021/06/12)