human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "split 2 bisimilarity has a finite axiomatization over ccs with hennessy s merge"
  Abstract: htmlabstractThis note shows that split-2 bisimulation equivalence (also known as timed equivalence) affords a finite equational axiomatization over the process algebra obtained by adding an auxiliary operation proposed by Hennessy in 1981 to the recursion, relabelling and restriction free fragment of Milner's Calculus of Communicating Systems. Thus the addition of a single binary operation, viz. Hennessy's merge, is sufficient for the finite equational axiomatization of parallel composition modulo this non-interleaving equivalence. This result is in sharp contrast to a theorem previously obtained by the same authors to the effect that the same language is not finitely based modulo bisimulation equivalence.

Connected through hyperedge HE-1 (induced by source paper "a modular structural operational semantics for delimited continuations"):
  with members:
    - "an operational foundation for delimited continuations in the cps hierarchy"

Connected through hyperedge HE-2 (induced by source paper "kolmogorov complexity and the geometry of brownian motion"):
  with members:
    - "the rapid points of a complex oscillation"
    - "computability of probability measures and martin lof randomness over metric spaces"
    - "uniform test of algorithmic randomness over a general space"

Connected through hyperedge HE-3 (induced by source paper "environmental bisimulations for delimited control operators"):
  with members:
    - "normal form bisimulations for delimited control operators"
    - "applicative bisimulations for delimited control operators"
    - "an operational foundation for delimited continuations in the cps hierarchy"

Connected through hyperedge HE-4 (induced by source paper "the categorical limit of a sequence of dynamical systems"):
  with members:
    - "labelled transition systems as a stone space"

Connected through hyperedge HE-5 (induced by source paper "normal form bisimulations for delimited control operators"):
  with members:
    - "applicative bisimulations for delimited control operators"
    - "an operational foundation for delimited continuations in the cps hierarchy"

Connected through hyperedge HE-6 (induced by source paper "step indexed normalization for a language with general recursion"):
  with members:
    - "first steps in synthetic guarded domain theory step indexing in the topos of trees"
    - "general recursion via coinductive types"

Connected through hyperedge HE-7 (induced by source paper "tracing monadic computations and representing effects"):
  with members:
    - "general recursion via coinductive types"

Connected through hyperedge HE-8 (induced by source paper "applicative bisimulations for delimited control operators"):
  with members:
    - "an operational foundation for delimited continuations in the cps hierarchy"

Question: Please tell me which class the center node 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)