It was published in 2005 -- actually I wrote the 9 novelettes that went into it from 1998-2003 (they were originally published in Asimov's SF magazine from 2002-2004 before I assembled and rewrote them to make the book).
I should add: every time I hear the phrase "state vector" I think of Accelerando.
There's a line in there that feels like it could pop up in a permutation city sequel:
> ... running a timing channel attack on the computational ultrastructure of spacetime itself, trying to break through to whatever's underneath...
Does that idea come up anywhere else in your work? If so, I'd go read it.