id summary reporter owner description type status priority milestone component resolution keywords cc merged author reviewer upstream work_issues branch commit dependencies stopgaps
20479 Correct error in vertex_boundary dcoudert "The documentation of `vertex_boundary` says that ''If vertices2 is None, then vertices2 is the complement of vertices1''. However this is not the case, as shown in this example.
{{{
sage: G = graphs.PathGraph(3)
sage: G.vertex_boundary([0,1], vertices2=None)
[0, 1, 2]
sage: G.vertex_boundary([0,1], vertices2=set(G.vertices()).difference([0,1]))
[2]
sage: D = DiGraph(G)
sage: D.vertex_boundary([0,1])
[0, 1, 2]
sage: D.vertex_boundary([0,1], vertices2=set(D.vertices()).difference([0,1]))
[2]
}}}
This patch solves this issue." defect closed major sage-7.2 graph theory fixed jmantysalo vdelecroix David Coudert Jori Mäntysalo N/A d35ce496637639f29294fa6c369f78caad401b46 d35ce496637639f29294fa6c369f78caad401b46