[mizar] New Mizar article

[Library Committee <mml@mizar.uwb.edu.pl>]

Yatsuka Nakamura submitted an article entitled:
      "Fan Homeomorphisms in the Plane"
        (MML identifier: JGRAPH_4)

to the Mizar Mathematical Library.  The preprint of the article is
available at:

 http://mizar.org/JFM/Preprints.html

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Library Committee of the Association of Mizar Users