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Revision difference : null graph |
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| The null graph is the graph with no vertices or edges. The null graph is the initial object in the category of graphs. |
The null graph is the graph with no vertices or edges. The null graph is the initial object in the category of graphs. |
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| {\bf Further Reading} |
{\bf Further Reading} |
| \begin{itemize} |
\begin{itemize} |
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\item Harary, F. and Read, R. ``Is the null-graph a pointless concept?'', Lecture Notes in Mathematics 406 (1974), pp. 37-44.
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\item Harary, F. and Read, R. ``Is the null-graph a pointless concept?", Lecture Notes in Mathematics 406 (1974), pp. 37-44.
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| \end{itemize} |
\end{itemize} |
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