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: "the largest respectful function"
  Abstract: Respectful functions were introduced by Sangiorgi as a compositional tool to#N#formulate short and clear bisimulation proofs. Usually, the larger the#N#respectful function, the easier the bisimulation proof. In particular the#N#largest respectful function, defined as the pointwise union of all respectful#N#functions, has been shown to be very useful. We here provide an explicit and#N#constructive characterization of it.

Connected through hyperedge HE-1 (induced by source paper "an equational theory for weak bisimulation via generalized parameterized coinduction"):
  with members:
    - "environmental bisimulations for delimited control operators with dynamic prompt generation"

Connected through hyperedge HE-2 (induced by source paper "sound up to techniques and complete abstract domains"):
  with members:
    - "structural abstract interpretation a formal study using coq"
    - "generalized strong preservation by abstract interpretation"

Connected through hyperedge HE-3 (induced by source paper "companions causality and codensity"):
  with members:
    - "stream differential equations specification formats and solution methods"
    - "coinduction up to in a fibrational setting"
    - "coalgebraic characterizations of context free languages"
    - "abstract gsos rules and a modular treatment of recursive definitions"

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)