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 "complexity of the frobenius monoid problem for a finite language"):
  Abstract: We solve an open problem concerning the computational complexity of the Frobenius monoid problem for a finite language. We show that determining whether for a finite language $L$ over an alphabet $\Sigma$ represented as a list of words, the language $L^*$ contains all except a finite number of words over $\Sigma$, is PSPACE-complete. The question was originally posed by Shallit and Xu in 2009. The complexity remains the same when the alphabet is binary. As intermediate problems, we consider three mortality questions about some types of rewriting systems. Finally, we note the same result for a more general inclusion variant of the problem, and we show that both problems are solvable in exponential time on the length of the longest words in the given list.

Includes members:
  Member "quotient complexity of regular languages":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "maximal state complexity and generalized de bruijn words")
  Member "an np hardness result on the monoid frobenius problem":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "the frobenius and factor universality problems of the free monoid on a finite set of words")
  Member "the frobenius problem in a free monoid":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "the frobenius and factor universality problems of the free monoid on a finite set of words")

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)