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Questions related to the spectrum of graphs, defined using one of the possible variants of the discrete Laplace operator or Laplacian matrix. See https://en.wikipedia.org/wiki/Discrete_Laplace_operator

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Do I need to find a maximum matching to get the matching number of a graph?

Let’s say we are talking about a simple undirected graph with no loops and no multiple edges. But not necessarily bipartite. And we need to find its matching number. Do we have to find a maximum match …
Iterokun 's user avatar