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The section matrix ⇐ ПредыдущаяСтр 4 из 4 2.2.3 The section matrix Topological matrixes can be compiled for graph sections too. The section matrix where
Section directions are marked with arrows on section lines. As a result, we get a section matrix sections It is obvious, that some sections used in the matrix (2.12) are linearly dependent. Only a section that includes at least one branch not being part of any other section is considered to be linearly independent. The number of independent sections, evidently, is equal to the number of independent nodes. Therefore, it is possible to retain any three lines in the matrix (2.12) without losing any information. So, having excluded the first four lines, we get the matrix:
The matrix edges the rest of graph branches edges One can see from (2.14) that any matrix where, the unit matrix 1 corresponds to the edges 1= edges The matrix edges So, as the unit matrix is in the matrix
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