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Wheel graphs are planar graphs, and have a unique planar embedding. More specifically, every wheel graph is a Halin graph. They are self-dual: the planar dual of any wheel graph is an isomorphic graph. Every maximal planar graph, other than K 4 = W 4, contains as a subgraph either W 5 or W 6.
Wheel graphs. Date: 3 October 2006: Source: Self-made. Originally uploaded as PNG to en.wikipedia; description page is/was here. Author: David Eppstein: Permission (Reusing this file) Released into the public domain (by the author).
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The most important feature from the point of view of Wiki charts, is that Gnumeric charts can be exported as graphics simply by right clicking anywhere on the finished chart and selecting Save as Image. A range of formats is supported, including SVG and PNG. The accompanying population chart is a typical result.
Sometimes, using a symbolic image to convey a concept is more impactful than words. This page compiles examples of such images along with their corresponding files, making them easy to copy and use. You are welcome to utilize these examples and, if you wish—while accepting full responsibility—contribute to expanding this collection.
These images were uploaded in a format such as GIF or JPEG. It is suggested that the original sources be revisited and that PNG files be uploaded in their places. For more information, see Wikipedia:Preparing images for upload. Images can be added to this category by placing the {{ShouldBePNG}} template on the image description page.
The first Wikipedia logo. In January 2001, Jimmy Wales used the flag of the United States as a placeholder logo for Wikipedia's UseModWiki instance. [4] Wikipedia's first true logo was an image originally submitted by Bjørn Smestad – under the username Bjornsm – for a Nupedia logo competition which took place in 2000. [5]
The following other wikis use this file: Usage on arz.wikipedia.org رموز صيني; Usage on azb.wikipedia.org چین یازیسی; Usage on bcl.wikipedia.org