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Your recent edit to 1/2 + 1/4 + 1/8 + 1/16 + · · · was incorrect;   and   are standard mathematical notations for the open interval  . — Arthur Rubin (talk) 05:05, 26 June 2012 (UTC)Reply

I did not know that. Thanks for clarifying. I should have also realized that the closed interval was incorrect. Aneuman (talk) 12:15, 26 June 2012 (UTC)Reply