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 "palindromic rich words and run length encodings"):
  Abstract: Abstract   A length n word is (palindromic) rich if it contains the maximum possible number, which is n, of distinct non-empty palindromic factors. We prove both necessary and sufficient conditions for richness in terms of run-length encodings of words. Relating sufficient conditions to integer partitions, we prove a lower bound of order      C     n      , where    C  ≈  37.6   , on the growth function of the language of binary rich words. From experimental study we suggest that this growth function actually grows more slowly than      n     n      , which makes our lower bound quite reasonable.

Includes members:
  Member "eertree an efficient data structure for processing palindromes in strings":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "palindromic k factorization in pure linear time")
  Member "on the number of closed factors in a word":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "the sequence of open and closed prefixes of a sturmian word")
  Member "inverse star borders and palstars":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "borders palindrome prefixes and square prefixes")

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)