Linear Algebra and Its Applications · Problem 2.5.18

Vector Spaces — Gilbert Strang

Mathematics · graphs-and-networks

Problem

Multiply matrices to find ATAA^T A, and guess how its entries come from the graph: (a) The diagonal of ATAA^T A tells how many \_\_\_\_ into each node. (b) The off-diagonals −1-1 or 00 tell which pairs of nodes are \_\_\_\_.

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