This is e-TeX, Version 3.14159-2.1 (Web2C 7.4.5)
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Document Class: article 2001/04/21 v1.4e Standard LaTeX document class
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For additional information on amsmath, use the `?' option.
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! LaTeX Error: \begin{enumerate} on input line 17 ended by \end{document}.

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l.54 \end{document}
                   
[1] (./hmwk1.aux) )
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### semi simple group (level 1) entered at line 17 (\begingroup)
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(see the transcript file for additional information)
Output written on hmwk1.dvi (1 page, 3128 bytes).
Transcript written on hmwk1.log.