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when toggle format what by license comment
S Sep 4, 2014 at 2:57 history suggested CommunityBot CC BY-SA 3.0
The last subscript of sigma should be 5.
Sep 4, 2014 at 2:42 review Suggested edits
S Sep 4, 2014 at 2:57
Jul 31, 2011 at 4:24 vote accept Dan Kneezel
Jul 31, 2011 at 3:52 history edited Álvaro Lozano-Robledo CC BY-SA 3.0
added 198 characters in body
Jul 31, 2011 at 3:45 history edited Álvaro Lozano-Robledo CC BY-SA 3.0
Added explicit formula; added 2 characters in body
Jul 31, 2011 at 3:40 history answered Álvaro Lozano-Robledo CC BY-SA 3.0