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 "most complex non returning regular languages"):
  Abstract: A regular language $L$ is non-returning if in the minimal deterministic finite automaton accepting it there are no transitions into the initial state. Eom, Han and Jir\'askov\'a derived upper bounds on the state complexity of boolean operations and Kleene star, and proved that these bounds are tight using two different binary witnesses. They derived upper bounds for concatenation and reversal using three different ternary witnesses. These five witnesses use a total of six different transformations. We show that for each $n\ge 4$ there exists a ternary witness of state complexity $n$ that meets the bound for reversal and that at least three letters are needed to meet this bound. Moreover, the restrictions of this witness to binary alphabets meet the bounds for product, star, and boolean operations. We also derive tight upper bounds on the state complexity of binary operations that take arguments with different alphabets. We prove that the maximal syntactic semigroup of a non-returning language has $(n-1)^n$ elements and requires at least $\binom{n}{2}$ generators. We find the maximal state complexities of atoms of non-returning languages. Finally, we show that there exists a most complex non-returning language that meets the bounds for all these complexity measures.

Includes members:
  Member "a new technique for reachability of states in concatenation automata":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "most complex deterministic union free regular 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 "on the state complexity of the shuffle of regular languages":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "algebraic and combinatorial tools for state complexity application to the star xor problem")
  Member "unrestricted state complexity of binary operations on regular and ideal languages":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "primitivity uniform minimality and state complexity of boolean operations")
  Member "quotient complexities of atoms in regular ideal languages":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "most complex deterministic union free regular languages")
  Member "complexity of suffix free regular languages":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "syntactic complexity of suffix free languages")
  Member "syntactic complexity of regular ideals":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "towards a theory of complexity of 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)