zrathustra's profile - activity

2015-01-12 02:37:44 +0200	received badge	● Scholar (source)
2015-01-12 02:37:36 +0200	commented answer	digraph.diameter() returning +Infinity for some cases You're right, I was confusing some definitions about connectivity - though it didn't help that `G.is_connected()` returns `True`. I can implement my intended functionality using something along the lines of `max(filter(lambda x: x != Infinity, G.eccentricity()))`.
2015-01-11 23:14:19 +0200	asked a question	digraph.diameter() returning +Infinity for some cases I'm running Sage 6.4.1 on OS X (Yosemite). Creating a directed graph with `n` vertices (for any n that I tried) returned `+Infinity`. EG: `sage: digraphs.Path(10).diameter() +Infinity` or even `sage: digraphs.ButterflyGraph(5).diameter() +Infinity` However, both of these Path and Butterfly graphs are finite, connected, directed acyclic graphs so their diameter should always be finite.