MyWikiBiz, Author Your Legacy — Monday November 25, 2024
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, 03:54, 28 July 2009
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− | The outermost region of the plane-embedded graph is singled out for special consideration and the corresponding node of the dual graph is referred to as its ''root node''. By way of graphical convention in the present text, the root node is indicated means by means of a horizontal strike-through. | + | The outermost region of the plane-embedded graph is singled out for special consideration and the corresponding node of the dual graph is referred to as its ''root node''. By way of graphical convention in the present text, the root node is indicated by means of a horizontal strike-through. |
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| Extracting the dual graph from its composite matrix, we get this picture: | | Extracting the dual graph from its composite matrix, we get this picture: |