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: "automatic structures of bounded degree revisited"
  Abstract: The first-order theory of a string automatic structure is known to be decidable, but there are examples of string automatic structures with nonelementary first-order theories. We prove that the first-order theory of a string automatic structure of bounded degree is decidable in doubly exponential space (for injective automatic presentations, this holds even uniformly). This result is shown to be optimal since we also present a string automatic structure of bounded degree whose first-order theory is hard for 2EXPSPACE. We prove similar results also for tree automatic structures. These findings close the gaps left open in a previous paper of the second author by improving both, the lower and the upper bounds.

Connected through hyperedge HE-1 (induced by source paper "observation and distinction representing information in infinite games"):
  with members:
    - "equivalence kernels of sequential functions and sequential observation synthesis"
    - "algorithms for omega regular games with imperfect information"

Connected through hyperedge HE-2 (induced by source paper "first order logic with counting at least weak hanf normal forms always exist and can be computed"):
  with members:
    - "answering fo mod queries under updates on bounded degree databases"
    - "answering conjunctive queries under updates"
    - "an optimal construction of hanf sentences"
    - "first order queries on structures of bounded degree are computable with constant delay"

Connected through hyperedge HE-3 (induced by source paper "the complexity of the first order theory of ground tree rewrite graphs"):
  with members:
    - "algorithmic metatheorems for decidable ltl model checking over infinite systems"
    - "the bisimulation problem for equational graphs of finite out degree"

Connected through hyperedge HE-4 (induced by source paper "tree automatic well founded trees"):
  with members:
    - "word automaticity of tree automatic scattered linear orderings is decidable"
    - "automatic structures richness and limitations"

Connected through hyperedge HE-5 (induced by source paper "an optimal construction of hanf sentences"):
  with members:
    - "first order query evaluation on structures of bounded degree"
    - "a focused sequent calculus framework for proof search in pure type systems"
    - "first order queries on structures of bounded degree are computable with constant delay"
    - "deciding first order properties of locally tree decomposable structures"

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.LO(Logic in Computer Science)