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 atoms combinatorially"):
  Abstract: Atoms of a (regular) language $L$ were introduced by Brzozowski and Tamm in 2011 as intersections of complemented and uncomplemented quotients of $L$. They derived tight upper bounds on the complexity of atoms in 2013. In 2014, Brzozowski and Davies characterized the regular languages meeting these bounds. To achieve these results, they used the so-called "atomaton" of a language, introduced by Brzozowski and Tamm in 2011. In this note we give an alternative proof of their characterization, via a purely combinatorial approach.

Includes members:
  Member "quotient complexities of atoms in regular ideal languages":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "most complex non returning regular languages")
  Member "complexity of suffix free regular languages":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "most complex non returning regular languages")
  Member "maximally atomic languages":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "towards a theory of complexity of regular languages")
  Member "maximal syntactic complexity of regular languages implies maximal quotient complexities of atoms":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "maximally atomic languages")
  Member "quotient complexities of atoms of regular languages":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "complexity of left ideal suffix closed and suffix free regular languages")
  Member "theory of atomata":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "a co algebraic theory of succinct automata")

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)