human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "modelling mac layer communications in wireless systems"):
  Abstract: We present a timed process calculus for modelling wireless networks in which#N#individual stations broadcast and receive messages; moreover the broadcasts are#N#subject to collisions. Based on a reduction semantics for the calculus we#N#define a contextual equivalence to compare the external behaviour of such#N#wireless networks. Further, we construct an extensional LTS (labelled#N#transition system) which models the activities of stations that can be directly#N#observed by the external environment. Standard bisimulations in this LTS#N#provide a sound proof method for proving systems contextually equivalence. We#N#illustrate the usefulness of the proof methodology by a series of examples.#N#Finally we show that this proof method is also complete, for a large class of#N#systems.

Includes members:
  Member "modelling probabilistic wireless networks":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "a process algebra for wireless mesh networks")
  Member "a timed calculus for mobile ad hoc networks":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "a process algebra for wireless mesh networks")
  Member "contextual equivalence for higher order pi calculus revisited":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "core higher order session processes tractable equivalences and relative expressiveness")

Question: Please tell me which class the source paper belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.LO(Logic in Computer Science)