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-rw-r--r--doc/sphinx/addendum/ring.rst2
1 files changed, 1 insertions, 1 deletions
diff --git a/doc/sphinx/addendum/ring.rst b/doc/sphinx/addendum/ring.rst
index 3f4d5cc784..1098aa75da 100644
--- a/doc/sphinx/addendum/ring.rst
+++ b/doc/sphinx/addendum/ring.rst
@@ -76,7 +76,7 @@ an arbitrary order:
===== =============== =========================
Then normalize the “abstract” polynomial
-:math:`((V_1 \otimes V_2 ) \oplus V_2) \oplus (V_0 \otimes 2)`
+:math:`((V_1 \oplus V_2 ) \otimes V_2) \oplus (V_0 \otimes 2)`
In our example the normal form is:
:math:`(2 \otimes V_0 ) \oplus (V_1 \otimes V_2) \oplus (V_2 \otimes V_2 )`.
Then substitute the variables by their values in the variables map to