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: "equivalence of deterministic one counter automata is nl complete"
  Abstract: We prove that language equivalence of deterministic one-counter automata is NL-complete. This improves the superpolynomial time complexity upper bound shown by Valiant and Paterson in 1975. Our main contribution is to prove that two deterministic one-counter automata are inequivalent if and only if they can be distinguished by a word of length polynomial in the size of the two input automata.

Connected through hyperedge HE-1 (induced by source paper "shortest paths in one counter systems"):
  with members:
    - "demystifying reachability in vector addition systems"
    - "decidability of weak simulation on one counter nets"
    - "upper bounds for newton s method on monotone polynomial systems and p time model checking of probabilistic one counter automata"
    - "automata and reduced words in the free group"

Connected through hyperedge HE-2 (induced by source paper "trace inclusion for one counter nets revisited"):
  with members:
    - "reachability in two dimensional vector addition systems with states is pspace complete"
    - "decidability of weak simulation on one counter nets"
    - "simulation over one counter nets is pspace complete"
    - "ackermannian and primitive recursive bounds with dickson s lemma"
    - "ltl with the freeze quantifier and register automata"

Connected through hyperedge HE-3 (induced by source paper "unary pushdown automata and straight line programs"):
  with members:
    - "the complexity of compressed membership problems for finite automata"
    - "deterministic pushdown automata and unary languages"

Connected through hyperedge HE-4 (induced by source paper "unary languages recognized by two way one counter automata"):
  with members:
    - "the minimum amount of useful space new results and new directions"
    - "classical and quantum realtime alternating automata"
    - "new results on the minimum amount of useful space"
    - "reachability in two clock timed automata is pspace complete"
    - "log space counter is useful for unary languages by help of a constant size quantum register"
    - "one counter verifiers for decidable languages"
    - "succinctness of two way probabilistic and quantum finite automata"
    - "two way finite automata with quantum and classical states"

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)