This is a past event.

COSine 2013 

When: Jan. 25-27 2013
Phone: 720/924-6373
Price: $35
firstfridayfandom.org/cosine
Named by combining our city's airport designation with a math joke, COSine is rocking its 10th year in existence, with the Crowne Plaza (2886 S. Circle Drive, firstfridayfandom.org) hosting the science-fiction convention. It's a good time, too. Author S.M. Stirling, who has…

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