Consider the populations of 16 isolated Pacific islands (they do not know the existence of one another). There is a total of 4096 people on those 16 islands. Consider the social graph G as described in class (i.e. with 4096 vertices) where an edge connects vertices if the persons know each other only. What is the correct statement about L, the graph Laplacian of G? OL has no zero eigenvalues. L has exactly 16 eigenvalues of L are zero. OL has 256 zero eigenvalues. OL has at least 16 eigenvalues of L are zero.

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter4: Eigenvalues And Eigenvectors
Section4.6: Applications And The Perron-frobenius Theorem
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Consider the populations of 16 isolated Pacific islands (they do not know the
existence of one another). There is a total of 4096 people on those 16 islands.
Consider the social graph G as described in class (i.e. with 4096 vertices) where an
edge connects vertices if the persons know each other only.
What is the correct statement about L, the graph Laplacian of G?
L has no zero eigenvalues.
L has exactly 16 eigenvalues of L are zero.
L has 256 zero eigenvalues.
L has at least 16 eigenvalues of L are zero.
Transcribed Image Text:Consider the populations of 16 isolated Pacific islands (they do not know the existence of one another). There is a total of 4096 people on those 16 islands. Consider the social graph G as described in class (i.e. with 4096 vertices) where an edge connects vertices if the persons know each other only. What is the correct statement about L, the graph Laplacian of G? L has no zero eigenvalues. L has exactly 16 eigenvalues of L are zero. L has 256 zero eigenvalues. L has at least 16 eigenvalues of L are zero.
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