human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "unary languages recognized by two way one counter automata"):
  Abstract: A two-way deterministic finite state automaton with one counter (2D1CA) is a fundamental computational model that has been examined in many different aspects since sixties, but we know little about its power in the case of unary languages. Up to our knowledge, the only known unary nonregular languages recognized by 2D1CAs are those formed by strings having exponential length, where the exponents form some trivial unary regular language. In this paper, we present some non-trivial subsets of these languages. By using the input head as a second counter, we present simulations of two-way deterministic finite automata with linearly bounded counters and linear--space Turing machines. We also show how a fixed-size quantum register can help to simplify some of these languages. Finally, we compare unary 2D1CAs with two--counter machines and provide some insights about the limits of their computational power.

Includes members:
  Member "the minimum amount of useful space new results and new directions":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "classical automata on promise problems")
  Member "classical and quantum realtime alternating automata":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "quantum finite automata survey status and research directions")
  Member "new results on the minimum amount of useful space":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "uncountable classical and quantum complexity classes")
  Member "reachability in two clock timed automata is pspace complete":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "life is random time is not markov decision processes with window objectives")
  Member "equivalence of deterministic one counter automata is nl complete":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "shortest paths in one counter systems")
  Member "log space counter is useful for unary languages by help of a constant size quantum register":
    also connected through other hyperedges:
      (none)
  Member "one counter verifiers for decidable languages":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "regular realizability problems and context free languages")
  Member "succinctness of two way probabilistic and quantum finite automata":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "quantum finite automata survey status and research directions")

Question: Please tell me which class the source paper 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)