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 "towards a theory of complexity of regular languages"):
  Abstract: We survey recent results concerning the complexity of regular languages represented by their minimal deterministic finite automata. In addition to the quotient complexity of the language -- which is the number of its (left) quotients, and is the same as its state complexity -- we also consider the size of its syntactic semigroup and the quotient complexity of its atoms -- basic components of every regular language. We then turn to the study of the quotient/state complexity of common operations on regular languages: reversal, (Kleene) star, product (concatenation) and boolean operations. We examine relations among these complexity measures. We discuss several subclasses of regular languages defined by convexity. In many, but not all, cases there exist "most complex" languages, languages satisfying all these complexity measures.

Includes members:
  Member "most complex non returning regular languages":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "complexity of regular bifix free languages")
  Member "unrestricted state complexity of binary operations on regular languages":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "primitivity uniform minimality and state complexity of boolean operations")
  Member "unrestricted state complexity of binary operations on regular and ideal languages":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "primitivity uniform minimality and state complexity of boolean operations")
  Member "most complex regular ideal languages":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "primitivity uniform minimality and state complexity of boolean operations")
  Member "syntactic complexity of regular ideals":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "most complex non returning regular languages")
  Member "maximally atomic languages":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "complexity of prefix convex regular languages")
  Member "upper bounds on syntactic complexity of left and two sided ideals":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "complexity of left ideal suffix closed and suffix free regular languages")
  Member "complexity of atoms combinatorially":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "a congruence based perspective on automata minimization algorithms")

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)