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: "logic meets algebra the case of regular languages"
  Abstract: The study of finite automata and regular languages is a privileged meeting#N#point of algebra and logic. Since the work of Buchi, regular languages have#N#been classified according to their descriptive complexity, i.e. the type of#N#logical formalism required to define them. The algebraic point of view on#N#automata is an essential complement of this classification: by providing#N#alternative, algebraic characterizations for the classes, it often yields the#N#only opportunity for the design of algorithms that decide expressibility in#N#some logical fragment.#N#  We survey the existing results relating the expressibility of regular#N#languages in logical fragments of MSO[S] with algebraic properties of their#N#minimal automata. In particular, we show that many of the best known results in#N#this area share the same underlying mechanics and rely on a very strong#N#relation between logical substitutions and block-products of pseudovarieties of#N#monoid. We also explain the impact of these connections on circuit complexity#N#theory.

Connected through hyperedge HE-1 (induced by source paper "continuity of functional transducers a profinite study of rational functions"):
  with members:
    - "degree of sequentiality of weighted automata"

Connected through hyperedge HE-2 (induced by source paper "quantifiers on languages and codensity monads"):
  with members:
    - "recognisable languages over monads"
    - "profinite monads profinite equations and reiterman s theorem"

Connected through hyperedge HE-3 (induced by source paper "using duality in circuit complexity"):
  with members:
    - "an effective characterization of the alternation hierarchy in two variable logic"

Connected through hyperedge HE-4 (induced by source paper "the fo2 alternation hierarchy is decidable"):
  with members:
    - "lattices of logical fragments over words"
    - "the join levels of the trotter weil hierarchy are decidable"
    - "languages of dot depth one over infinite words"
    - "an introduction to finite automata and their connection to logic"
    - "on fo 2 quantifier alternation over words"
    - "structure theorem and strict alternation hierarchy for fo2 on words"

Connected through hyperedge HE-5 (induced by source paper "on logical hierarchies withinfoâ definable languages"):
  with members:
    - "lattices of logical fragments over words"
    - "structure theorem and strict alternation hierarchy for fo2 on words"
    - "the succinctness of first order logic on linear orders"

Connected through hyperedge HE-6 (induced by source paper "lattices of logical fragments over words"):
  with members:
    - "structure theorem and strict alternation hierarchy for fo2 on words"
    - "the complexity of model checking higher order fixpoint logic"

Connected through hyperedge HE-7 (induced by source paper "languages of dot depth one over infinite words"):
  with members:
    - "first order fragments with successor over infinite words"
    - "fragments of first order logic over infinite words"
    - "algebraic characterization of logically defined tree languages"
    - "algebraic recognizability of languages"

Connected through hyperedge HE-8 (induced by source paper "fragments of first order logic over infinite words"):
  with members:
    - "piecewise testable tree languages"
    - "tree languages defined in first order logic with one quantifier alternation"
    - "two way unary temporal logic over trees"
    - "algebraic recognizability of languages"

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)