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incidence_matrix [2014/02/08 02:02] nikolaj old revision restored (2013/12/21 19:57) |
incidence_matrix [2014/02/08 02:03] nikolaj |
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| ==== Discussion ==== | ==== Discussion ==== | ||
| - | The index $i$ in $M_{ij}$ labels the vertices and the index $j$ labels the edges. The definion says that every edge has exactly two endpoints. | + | The index $i$ in $M_{ij}$ labels the vertices and the index $j$ labels the edges. The definition says that every edge has exactly two endpoints. |
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| + | Every incidence matrix corresponds to (a representative of the isomorphism class of) a [[finite undirected graph]]. | ||
| ==== Parents ==== | ==== Parents ==== | ||
| === Subset of === | === Subset of === | ||
| [[Matrix]] | [[Matrix]] | ||
