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: "primitive words and lyndon words in automatic and linearly recurrent sequences"
  Abstract: We investigate questions related to the presence of primitive words and Lyndon words in automatic and linearly recurrent sequences. We show that the Lyndon factorization of a k-automatic sequence is itself k-automatic. We also show that the function counting the number of primitive factors (resp., Lyndon factors) of length n in a k-automatic sequence is k-regular. Finally, we show that the number of Lyndon factors of a linearly recurrent sequence is bounded.

Connected through hyperedge HE-1 (induced by source paper "sums of palindromes an approach via automata"):
  with members:
    - "on the number of unbordered factors"
    - "enumeration and decidable properties of automatic sequences"
    - "periodicity repetitions and orbits of an automatic sequence"

Connected through hyperedge HE-2 (induced by source paper "mechanical proofs of properties of the tribonacci word"):
  with members:
    - "decision algorithms for fibonacci automatic words with applications to pattern avoidance"
    - "on the number of unbordered factors"
    - "subword complexity and k synchronization"
    - "enumeration and decidable properties of automatic sequences"
    - "periodicity repetitions and orbits of an automatic sequence"

Connected through hyperedge HE-3 (induced by source paper "decision algorithms for fibonacci automatic words with applications to pattern avoidance"):
  with members:
    - "on the number of unbordered factors"
    - "enumeration and decidable properties of automatic sequences"
    - "pattern avoidability with involution"
    - "avoiding three consecutive blocks of the same size and same sum"
    - "periodicity repetitions and orbits of an automatic sequence"

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)