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-rw-r--r--Doc/reference/datamodel.rst2
1 files changed, 1 insertions, 1 deletions
diff --git a/Doc/reference/datamodel.rst b/Doc/reference/datamodel.rst
index 181e445..f1334f0 100644
--- a/Doc/reference/datamodel.rst
+++ b/Doc/reference/datamodel.rst
@@ -1558,7 +1558,7 @@ Basic customization
This is intended to provide protection against a denial-of-service caused
by carefully-chosen inputs that exploit the worst case performance of a
- dict insertion, O(n^2) complexity. See
+ dict insertion, O(n\ :sup:`2`) complexity. See
http://www.ocert.org/advisories/ocert-2011-003.html for details.
Changing hash values affects the iteration order of sets.