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: "parikh s theorem a simple and direct automaton construction"
  Abstract: Parikh's theorem states that the Parikh image of a context-free language is semilinear or, equivalently, that every context-free language has the same Parikh image as some regular language. We present a very simple construction that, given a context-free grammar, produces a finite automaton recognizing such a regular language.

Connected through hyperedge HE-1 (induced by source paper "re pairing brackets"):
  with members:
    - "complexity of problems of commutative grammars"
    - "decision problems for additive regular functions"
    - "pebble games proof complexity and time space trade offs"
    - "algorithmic verification of asynchronous programs"
    - "mso definable string transductions and two way finite state transducers"

Connected through hyperedge HE-2 (induced by source paper "the parikh property for weighted context free grammars"):
  with members:
    - "algorithmic verification of asynchronous programs"

Connected through hyperedge HE-3 (induced by source paper "parikh image of pushdown automata"):
  with members:
    - "unary pushdown automata and straight line programs"
    - "deterministic pushdown automata and unary languages"

Connected through hyperedge HE-4 (induced by source paper "bounded oscillation pushdown automata"):
  with members:
    - "underapproximation of procedure summaries for integer programs"
    - "approximating petri net reachability along context free traces"

Connected through hyperedge HE-5 (induced by source paper "characterization and complexity results on jumping finite automata"):
  with members:
    - "complexity of problems of commutative grammars"
    - "on basic properties of jumping finite automata"
    - "learning and designing stochastic processes from logical constraints"
    - "two results on discontinuous input processing"
    - "commutative languages and their composition by consensual methods"
    - "converting nondeterministic automata and context free grammars into parikh equivalent one way and two way deterministic automata"
    - "petri net reachability graphs decidability status of first order properties"
    - "bounded parikh automata"

Connected through hyperedge HE-6 (induced by source paper "string solving with word equations and transducers towards a logic for analysing mutation xss full version"):
  with members:
    - "graph logics with rational relations"
    - "algorithmic metatheorems for decidable ltl model checking over infinite systems"
    - "symbolic model checking of tense logics on rational kripke models"

Connected through hyperedge HE-7 (induced by source paper "parameterized verification of asynchronous shared memory systems"):
  with members:
    - "algorithmic verification of asynchronous programs"
    - "parameterised pushdown systems with non atomic writes"
    - "the computational power of population protocols"

Connected through hyperedge HE-8 (induced by source paper "converting nondeterministic automata and context free grammars into parikh equivalent one way and two way deterministic automata"):
  with members:
    - "parikh images of regular languages complexity and applications"

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.FL(Formal Languages and Automata Theory)