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 "structural complexity of multi valued partial functions computed by nondeterministic pushdown automata"):
  Abstract: This paper continues a systematic and comprehensive study on the structural properties of CFL functions, which are in general multi-valued partial functions computed by one-way one-head nondeterministic pushdown automata equipped with write-only output tapes (or pushdown transducers), where CFL refers to a relevance to context-free languages. The CFL functions tend to behave quite differently from their corresponding context-free languages. We extensively discuss containments, separations, and refinements among various classes of functions obtained from the CFL functions by applying Boolean operations, functional composition, many-one relativization, and Turing relativization. In particular, Turing relativization helps construct a hierarchy over the class of CFL functions. We also analyze the computational complexity of optimization functions, which are to find optimal values of CFL functions, and discuss their relationships to the associated languages.

Includes members:
  Member "oracle pushdown automata nondeterministic reducibilities and the cfl hierarchy over the family of context free languages":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "nonuniform families of polynomial size quantum finite automata and quantum logarithmic space computation with polynomial size advice")
  Member "immunity and pseudorandomness of context free languages":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "not all multi valued partial cfl functions are refined by single valued functions")
  Member "the roles of advice to one tape linear time turing machines and finite automata":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "nonuniform families of polynomial size quantum finite automata and quantum logarithmic space computation with polynomial size advice")
  Member "multi head finite automata characterizations concepts and open problems":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "an in between implicit and explicit complexity automata")
  Member "pseudorandom generators against advised context free languages":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "nonuniform families of polynomial size quantum finite automata and quantum logarithmic space computation with polynomial size advice")
  Member "swapping lemmas for regular and context free languages":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "nonuniform families of polynomial size quantum finite automata and quantum logarithmic space computation with polynomial size advice")
  Member "theory of one tape linear time turing machines":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "classically time controlled quantum automata definition and properties")

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)