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: "verifying nondeterministic probabilistic channel systems against ω regular linear time properties"
  Abstract: Lossy channel systems (LCS's) are systems of finite state processes that communicate via unreliable unbounded fifo channels. We introduce NPLCS's, a variant of LCS's where message losses have a probabilistic behavior while the component processes behave nondeterministically, and study the decidability of qualitative verification problems for ω-regular linear-time properties.   We show that—in contrast to finite-state Markov decision processes—the satisfaction relation for linear-time formulas depends on the type of schedulers that resolve the nondeterminism. While the qualitative model checking problem for the full class of history-dependent schedulers is undecidable, the same question for finite-memory schedulers can be solved algorithmically. Additionally, some special kinds of reachability, or recurrent reachability, qualitative properties yield decidable verification problems for the full class of schedulers, which—for this restricted class of problems—are as powerful as finite-memory schedulers, or even a subclass of them.

Connected through hyperedge HE-1 (induced by source paper "parity objectives in countable mdps"):
  with members:
    - "qualitative analysis of vass induced mdps"
    - "qualitative reachability in stochastic bpa games"

Connected through hyperedge HE-2 (induced by source paper "on reachability for unidirectional channel systems extended with regular tests"):
  with members:
    - "complexity hierarchies beyond elementary"
    - "generalized post embedding problems"
    - "the parametric ordinal recursive complexity of post embedding problems"
    - "graph logics with rational relations"
    - "the power of well structured systems"
    - "reachability analysis of communicating pushdown systems"
    - "cutting through regular post embedding problems"
    - "reachability of communicating timed processes"

Connected through hyperedge HE-3 (induced by source paper "stochastic parity games on lossy channel systems"):
  with members:
    - "solving stochastic b uchi games on infinite arenas with a finite attractor"
    - "recursive concurrent stochastic games"
    - "decisive markov chains"
    - "the existential theory of equations with rational constraints in free groups is pspace complete"

Connected through hyperedge HE-4 (induced by source paper "solving stochastic b uchi games on infinite arenas with a finite attractor"):
  with members:
    - "the parametric ordinal recursive complexity of post embedding problems"
    - "determinacy in stochastic games with unbounded payoff functions"
    - "approximating the termination value of one counter mdps and stochastic games"
    - "qualitative reachability in stochastic bpa games"
    - "multiply recursive upper bounds with higman s lemma"
    - "one counter stochastic games"
    - "recursive concurrent stochastic games"
    - "on termination for faulty channel machines"

Connected through hyperedge HE-5 (induced by source paper "qualitative reachability in stochastic bpa games"):
  with members:
    - "recursive concurrent stochastic games"

Connected through hyperedge HE-6 (induced by source paper "on computing fixpoints in well structured regular model checking with applications to lossy channel systems"):
  with members:
    - "a classification of symbolic transition systems"

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)