Image:NotNull.png

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I made this image using OpenOffice Draw. It illustrates a contour that is not null-homotopic in an open set U.

I, the copyright holder of this work, hereby release it into the public domain. This applies worldwide.

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I grant any entity the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

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	Date/Time	Dimensions	User	Comment
current	16:21, 14 December 2007	500×448 (29 KB)	Frank 1729 (Talk \| contribs)	(I made this image using OpenOffice Draw. It illustrates a contour that is not null-homotopic in an open set ''U''. {{PD-self}})

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