Rule 34 (novel) revelations by Edward Snowden, Stross announced that there would be no third book in the planned trilogy. ""Halting State" wasn't intended to be predictive when I started writing it in 2006. Trouble is, about the only parts that haven't happened yet are Scottish Independence and the use of actual quantum computers for cracking public key encryption (and there's a big fat question mark over the latter—what else are the NSA up to?)" Rule 34 (novel) Rule 34 is a near-future science fiction novel by Charles Stross. It is a loose sequel to "Halting State", and was released on 5 July
Triple product rule Triple product rule The triple product rule, known variously as the cyclic chain rule, cyclic relation, cyclical rule or Euler's chain rule, is a formula which relates partial derivatives of three interdependent variables. The rule finds application in thermodynamics, where frequently three variables can be related by a function of the form "f"("x", "y", "z") = 0, so each variable is given as an implicit function of the other two variables. For example, an equation of state for a fluid relates temperature, pressure, and volume in this manner. The triple product rule for such interrelated variables "x", "y", and "z"