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 "on the state complexity of closures and interiors of regular languages with subwords and superwords"):
  Abstract: The downward and upward closures of a regular language L are obtained by collecting all the subwords and superwords of its elements, respectively. The downward and upward interiors of L are obtained dually by collecting words having all their subwords and superwords in L, respectively. We provide lower and upper bounds on the size of the smallest automata recognizing these closures and interiors. We also consider the computational complexity of decision problems for closures of regular languages.

Includes members:
  Member "decidability in the logic of subsequences and supersequences":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "languages ordered by the subword order")
  Member "refinement and difference for probabilistic automata":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "compositionality for quantitative specifications")
  Member "finite automata for the sub and superword closure of cfls descriptional and computational complexity":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "the ideal approach to computing closed subsets in well quasi orderings")
  Member "alternating towers and piecewise testable separators":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "testing simon s congruence")
  Member "the power of priority channel systems":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "the ideal approach to computing closed subsets in well quasi orderings")
  Member "computing downward closures for stacked counter automata":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "the ideal approach to computing closed subsets in well quasi orderings")
  Member "quotient complexity of ideal languages":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "primitivity uniform minimality and state complexity of boolean operations")
  Member "decision problems for convex languages":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "towards a theory of complexity of regular languages")

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)