for g in graphs.nauty_geng("8 -c"):

g.show()

h = g.laplacian_matrix().eigenvalues()

h.sort()

show(h)

I am trying to extract those graphs having all laplacian eigenvalues are integer. But How I can filter the remaining graphs.

1 | initial version | Anonymous |

for g in graphs.nauty_geng("8 -c"):

g.show()

h = g.laplacian_matrix().eigenvalues()

h.sort()

show(h)

I am trying to extract those graphs having all laplacian eigenvalues are integer. But How I can filter the remaining graphs.

for g in graphs.nauty_geng("8 -c"):

g.show()

h = g.laplacian_matrix().eigenvalues()

h.sort()

show(h)

I am trying to extract those graphs having all laplacian eigenvalues are integer. ~~But ~~How I can ~~filter the remaining graphs.~~do this in sage?

for g in graphs.nauty_geng("8 -c"):

g.show()

h = g.laplacian_matrix().eigenvalues()

h.sort()

show(h)

I am trying to extract those graphs having all laplacian eigenvalues are integer. How I can do this in sage?

for g in graphs.nauty_geng("8 -c"):

g.show()

h = g.laplacian_matrix().eigenvalues()

h.sort()

show(h)

I am trying to extract those graphs having all laplacian eigenvalues are integer. How I can do this in sage?

for g in graphs.nauty_geng("8 -c"):

g.show()

h = g.laplacian_matrix().eigenvalues()

h.sort()

show(h)

I am trying to extract those graphs having all laplacian eigenvalues are integer. ~~How I can do ~~Is it possible to solve this problem in sage?

for g in graphs.nauty_geng("8 -c"):

g.show()

h = g.laplacian_matrix().eigenvalues()

h.sort()

show(h)

I am trying to extract those graphs having all laplacian eigenvalues are integer. Is it possible to solve this problem in sage?

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