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How to get only the connected graphs from this code

asked 2019-02-12 08:57:16 +0200

anonymous user

Anonymous

how to get only the connected graphs from this code.

for G in graphs(10):

G.show()

L=G.laplacian_matrix().eigenvalues()

L.sort()

show(L)

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answered 2019-02-12 10:13:55 +0200

rburing gravatar image

You can replace graphs(10) by

filter(lambda g: g.is_connected(), graphs(10))

It is more efficient to use the nauty backend; replace graphs(10) by

graphs.nauty_geng('10 -c')
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Asked: 2019-02-12 08:57:16 +0200

Seen: 47 times

Last updated: Feb 12 '19