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connected graphs

asked 2016-07-13 11:46:18 -0500

Hakan gravatar image

How to list all the nonishomorphic connected graphs with 9 vertices?

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answered 2016-07-14 05:29:36 -0500

slelievre gravatar image

Following the link given by @kcrisman you learn about nauty_geng.

sage: gen = graphs.nauty_geng("9 -c")
sage: sum(1 for g in gen)
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Moreover it is very fast !

tmonteil gravatar imagetmonteil ( 2016-07-14 11:45:51 -0500 )edit

answered 2016-07-13 13:00:19 -0500

kcrisman gravatar image

You may find this link helpful. Though perhaps connectedness isn't heritable, so be warned:

Remember that the property argument does not behave as a filter, except for appropriately inheritable properties:

Still, on that page you should find a syntax that helps you.

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Asked: 2016-07-13 11:46:18 -0500

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Last updated: Jul 14 '16