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           | Description | 
           The set of hours in the conventional clock form a cyclic group under addition, isomorphic to C12. H={0,1,2,3,4,5,6,7,8,9,10,11} This image was created by me using Inkscape and borrowed materials from the Open Clip Art Library licensed in the public domain.  Spindled 22:31, 19 October 2006 (UTC) | 
          
          
           | Date | 
           2006-10-19 (original upload date) | 
          
          
           | Source | 
           Originally from  en.wikipedia; description page is/was  here. | 
          
          
           | Author | 
           Original uploader was  Spindled at  en.wikipedia | 
          
          
           Permission ( Reusing this file) | 
           
             Licensed under the  GFDL by the author; Released under the  GNU Free Documentation License. 
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         Licensing 
        
         
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          Permission is granted to copy, distribute and/or modify this document under the terms of the  GNU Free Documentation License, Version 1.2 or any later version published by the  Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled  GNU Free Documentation License.  http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue 
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       This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.
        
       
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