subgraph error (errata)

*To*: mathgroup at smc.vnet.net*Subject*: [mg125816] subgraph error (errata)*From*: dan jack <dan.spectrix at gmail.com>*Date*: Wed, 4 Apr 2012 04:26:42 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com

I write an errata for the previous message: I obtain the error in this case: gg = Graph[{11 -> 2, 11 -> 3, 4 -> 11, 5-> 11, 11 -> 11}] Subgraph[gg, 1 ->_ ] Join::headsd: Expression {11,2} at position 1 is expected to have head List for all subexpressions through level 11. DeleteDuplicates::list: List expected at position 1 in DeleteDuplicates[Join[{11,2},{11,3},11]]. but not in this case: gg = Graph[{1 -> 2, 1 -> 3, 4 -> 1, 5-> 1, 1-> 1}] so it seems that the only difference is the vertex number: 1 works but 11 do not works ...very strange. Obviously the arrows are the correct Directed Edges (ESC de ESC)... any help or solidarity comment is appreciated :-)