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: "quantified ctl expressiveness and complexity"
  Abstract: While it was defined long ago, the extension of CTL with quantification over#N#atomic propositions has never been studied extensively. Considering two#N#different semantics (depending whether propositional quantification refers to#N#the Kripke structure or to its unwinding tree), we study its expressiveness#N#(showing in particular that QCTL coincides with Monadic Second-Order Logic for#N#both semantics) and characterise the complexity of its model-checking and#N#satisfiability problems, depending on the number of nested propositional#N#quantifiers (showing that the structure semantics populates the polynomial#N#hierarchy while the tree semantics populates the exponential hierarchy).

Connected through hyperedge HE-1 (induced by source paper "reasoning about quality and fuzziness of strategic behaviours"):
  with members:
    - "strategy logic with imperfect information"
    - "admissibility in quantitative graph games"
    - "high quality synthesis against stochastic environments"
    - "assume admissible synthesis"
    - "discounting in ltl"
    - "how to be both rich and happy combining quantitative and qualitative strategic reasoning about multi player games extended abstract"
    - "on equilibria in quantitative games with reachability safety objectives"
    - "reasoning about strategies on the model checking problem"

Connected through hyperedge HE-2 (induced by source paper "timed systems through the lens of logic"):
  with members:
    - "non sequential theory of distributed systems"
    - "decidability of timed communicating automata"
    - "binary reachability of timed pushdown automata via quantifier elimination and cyclic order atoms"
    - "towards an efficient tree automata based technique for timed systems"
    - "analyzing timed systems using tree automata"
    - "timed pushdown automata revisited"
    - "monadic second order definable graph orderings"

Connected through hyperedge HE-3 (induced by source paper "decidability results for atl with imperfect information and perfect recall"):
  with members:
    - "quantified ctl with imperfect information"
    - "hierarchical information patterns and distributed strategy synthesis"
    - "atlsc with partial observation"
    - "model checking atl under imperfect information and perfect recall semantics is undecidable"
    - "reasoning about strategies on the model checking problem"
    - "model checking an alternating time temporal logic with knowledge imperfect information perfect recall and communicating coalitions"

Connected through hyperedge HE-4 (induced by source paper "strategy logic with imperfect information"):
  with members:
    - "decidability results for atl with imperfect information and perfect recall"
    - "games on graphs with a public signal monitoring"
    - "the fixed initial credit problem for partial observation energy games is ack complete"
    - "hierarchical information and the synthesis of distributed strategies"
    - "hierarchical information patterns and distributed strategy synthesis"
    - "pure nash equilibria in concurrent deterministic games"
    - "atlsc with partial observation"
    - "games with a weak adversary"

Connected through hyperedge HE-5 (induced by source paper "on the complexity of atl and atl module checking"):
  with members:
    - "reasoning about strategies on the model checking problem"
    - "new results on pushdown module checking with imperfect information"
    - "enriched mu calculi module checking"

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)