human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "unary finite automata vs arithmetic progressions"
  Abstract: We point out a subtle error in the proof of Chrobak's theorem that every unary NFA can be represented as a union of arithmetic progressions that is at most quadratically large. We propose a correction for this and show how Martinez's polynomial time algorithm, which realizes Chrobak's theorem, can be made correct accordingly. We also show that Martinez's algorithm cannot be improved to have logarithmic space, unless L = NL.

Connected through hyperedge HE-1 (induced by source paper "quadratic word equations with length constraints counter systems and presburger arithmetic with divisibility"):
  with members:
    - "the satisfiability of extended word equations the boundary between decidability and undecidability"
    - "the hardness of solving simple word equations"
    - "recompression a simple and powerful technique for word equations"
    - "algorithmic metatheorems for decidable ltl model checking over infinite systems"

Connected through hyperedge HE-2 (induced by source paper "from finite automata to regular expressions and back a summary on descriptional complexity"):
  with members:
    - "a faster parameterized algorithm for treedepth"
    - "incomplete transition complexity of basic operations on finite languages"
    - "enumerating regular expressions and their languages"
    - "state elimination ordering strategies some experimental results"
    - "regular expressions au point"
    - "transition complexity of incomplete dfas"
    - "succinctness of the complement and intersection of regular expressions"

Connected through hyperedge HE-3 (induced by source paper "the complexity of clausal fragments of ltl"):
  with members:
    - "the dl lite family and relations"
    - "the complexity of generalized satisfiability for linear temporal logic"
    - "clausal temporal resolution"

Connected through hyperedge HE-4 (induced by source paper "a cookbook for temporal conceptual data modelling with description logics"):
  with members:
    - "the dl lite family and relations"
    - "the complexity of generalized satisfiability for linear temporal logic"
    - "monodic temporal resolution"
    - "clausal temporal resolution"
    - "unifying class based representation formalisms"
    - "a temporal description logic for reasoning about actions and plans"

Question: Please tell me which class the center node 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.CC(Computational Complexity)