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: "an extremal series of eulerian synchronizing automata"
  Abstract: We present an infinite series of n-state Eulerian automata whose reset words have length at least $$n^2-3/2$$. This improves the current lower bound on the length of shortest reset words in Eulerian automata. We conjecture that $$n^2-3/2$$ also forms an upper bound for this class and we experimentally verify it for small automata by an exhaustive computation.

Connected through hyperedge HE-1 (induced by source paper "slowly synchronizing automata with idempotent letters of low rank"):
  with members:
    - "improving the upper bound on the length of the shortest reset word"
    - "on randomized generation of slowly synchronizing automata"
    - "counting symbol switches in synchronizing automata"
    - "on the interplay between babai and v c ern y s conjectures"
    - "synchronizing automata with extremal properties"

Connected through hyperedge HE-2 (induced by source paper "on random primitive sets directable ndfas and the generation of slowly synchronizing dfas"):
  with members:
    - "improving the upper bound on the length of the shortest reset word"
    - "on the interplay between babai and v c ern y s conjectures"
    - "primitive digraphs with large exponents and slowly synchronizing automata"
    - "on the probability of being synchronizable"

Connected through hyperedge HE-3 (induced by source paper "on randomized generation of slowly synchronizing automata"):
  with members:
    - "fast synchronization of random automata"

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)