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: "independent sets of words and the synchronization problem"
  Abstract: The synchronization problem is investigated for the class of locally strongly transitive automata introduced in a previous work of the authors. Some extensions of this problem related to the notions of stable set and word of minimal rank of an automaton are studied. An application to synchronizing colorings of aperiodic graphs with a Hamiltonian path is also considered.

Connected through hyperedge HE-1 (induced by source paper "experiments with synchronizing automata"):
  with members:
    - "subset synchronization of transitive automata"
    - "a note on a recent attempt to improve the pin frankl bound"
    - "algebraic synchronization criterion and computing reset words"
    - "generating synchronizing automata with large reset lengths"
    - "primitive digraphs with large exponents and slowly synchronizing automata"
    - "modifying the upper bound on the length of minimal synchronizing word"
    - "slowly synchronizing automata and digraphs"
    - "the cerny conjecture for one cluster automata with prime length cycle"

Connected through hyperedge HE-2 (induced by source paper "on incomplete and synchronizing finite sets"):
  with members:
    - "on non complete sets and restivo s conjecture"
    - "on the minimal uncompletable word problem"
    - "slowly synchronizing automata and digraphs"
    - "the road coloring problem"

Connected through hyperedge HE-3 (induced by source paper "algebraic synchronization criterion and computing reset words"):
  with members:
    - "experiments with synchronizing automata"
    - "fast synchronization of random automata"
    - "synchronizing automata with large reset lengths"
    - "strong inapproximability of the shortest reset word"
    - "primitive digraphs with large exponents and slowly synchronizing automata"
    - "on the probability to be synchronizable"
    - "on two algorithmic problems about synchronizing automata"
    - "on the probability of being synchronizable"

Connected through hyperedge HE-4 (induced by source paper "on the synchronizing probability function and the triple rendezvous time for synchronizing automata"):
  with members:
    - "reachability of consensus and synchronizing automata"
    - "modifying the upper bound on the length of minimal synchronizing word"
    - "slowly synchronizing automata and digraphs"

Connected through hyperedge HE-5 (induced by source paper "generating synchronizing automata with large reset lengths"):
  with members:
    - "primitive digraphs with large exponents and slowly synchronizing automata"
    - "slowly synchronizing automata and digraphs"

Connected through hyperedge HE-6 (induced by source paper "primitive digraphs with large exponents and slowly synchronizing automata"):
  with members:
    - "modifying the upper bound on the length of minimal synchronizing word"
    - "experimental study of the shortest reset word of random automata"
    - "the complexity of finding reset words in finite automata"
    - "approximating the minimum length of synchronizing words is hard"
    - "slowly synchronizing automata and digraphs"
    - "the cerny conjecture for one cluster automata with prime length cycle"
    - "aspects of enumeration and generation with a string automata representation"
    - "the road coloring problem"

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)