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: "on completeness and parametricity in the realizability semantics of system f"
  Abstract: A general approach to the realizability semantics of System F is obtained by considering closure operators over sets of lambda-terms. We investigate completeness and relational parametricity in the semantics generated by such closure operators. We prove general results and show that they can be applied to several well-known semantics, as those arising from Tait's saturatedness conditions and from Girard's reducibility candidates. First, we show that, for a wide class of semantics, completeness holds for positive second order types, by generalizing some completeness results in the literature. Then we show that Reynolds parametric semantics can be formulated within the realizability semantics which are stable by union. We prove a parametricity theorem stating that closed realizers of a given type are parametric at that type. Finally, we consider syntactic dinaturality and prove that, for positive second order types, parametric terms are dinatural. Our results show that, for positive second order types, realizability, parametricity, dinaturality and typability are equivalent properties of closed normal lambda-terms.

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)