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: "relating coalgebraic notions of bisimulation"
  Abstract: The theory of coalgebras, for an endofunctor on a category, has been proposed as a general theory of transition systems. We investigate and relate four generalizations of bisimulation to this setting, providing conditions under which the four different generalizations coincide. We study transfinite sequences whose limits are the greatest bisimulations.

Connected through hyperedge HE-1 (induced by source paper "infinite types infinite data infinite interaction"):
  with members:
    - "bisimulation as path type for guarded recursive types"
    - "cubical type theory a constructive interpretation of the univalence axiom"
    - "non wellfounded trees in homotopy type theory"
    - "a linear category of polynomial functors extensional part"
    - "a linear category of polynomial diagrams"
    - "programming interfaces and basic topology"
    - "representations of stream processors using nested fixed points"

Connected through hyperedge HE-2 (induced by source paper "the theory of traces for systems with nondeterminism and probability"):
  with members:
    - "trace and testing metrics on nondeterministic probabilistic processes"
    - "convex language semantics for nondeterministic probabilistic automata"
    - "mixed powerdomains for probability and nondeterminism"
    - "the power of convex algebras"
    - "termination in convex sets of distributions"
    - "a convenient category for higher order probability theory"
    - "layer by layer combining monads"
    - "distribution based bisimulation for labelled markov processes"

Connected through hyperedge HE-3 (induced by source paper "bisimulations for coalgebras on stone spaces"):
  with members:
    - "simulations and bisimulations for coalgebraic modal logics"
    - "generalized powerlocales via relation lifting"
    - "neighbourhood structures bisimilarity and basic model theory"

Connected through hyperedge HE-4 (induced by source paper "proper semirings and proper convex functors"):
  with members:
    - "sound and complete axiomatizations of coalgebraic language equivalence"
    - "a focused sequent calculus framework for proof search in pure type systems"
    - "simulation vs equivalence"

Connected through hyperedge HE-5 (induced by source paper "behavioural equivalences for timed systems"):
  with members:
    - "weak bisimulation for coalgebras over order enriched monads"
    - "behavioural equivalences for coalgebras with unobservable moves"
    - "on coalgebras with internal moves"
    - "lax functors and coalgebraic weak bisimulation"
    - "gsos for non deterministic processes with quantitative aspects"
    - "structural operational semantics for non deterministic processes with quantitative aspects"
    - "coalgebraic weak bisimulation from recursive equations over monads"
    - "coinduction up to in a fibrational setting"

Connected through hyperedge HE-6 (induced by source paper "the power of convex algebras"):
  with members:
    - "termination in convex sets of distributions"
    - "a convenient category for higher order probability theory"
    - "high level counterexamples for probabilistic automata"
    - "robust synchronization in markov decision processes"
    - "probabilistic bisimulation naturally on distributions"
    - "coinduction up to in a fibrational setting"
    - "when equivalence and bisimulation join forces in probabilistic automata"
    - "church a language for generative models"

Connected through hyperedge HE-7 (induced by source paper "universal constructions for co relations categories monoidal categories and props"):
  with members:
    - "custom hypergraph categories via generalized relations"
    - "a universal construction for co relations"
    - "bialgebraic semantics for logic programming"
    - "coalgebraic logic programming from semantics to implementation"

Connected through hyperedge HE-8 (induced by source paper "bisimulation games on coalgebras"):
  with members:
    - "a van benthem theorem for fuzzy modal logic"
    - "logical characterization of bisimulation metrics"
    - "behavioral metrics via functor lifting"
    - "simulations and bisimulations for coalgebraic modal logics"

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)