human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "a representation theorem for stratified complete lattices"):
  Abstract: We consider complete lattices equipped with preorderings indexed by the ordinals less than a given (limit) ordinal subject to certain axioms. These structures, called stratified complete lattices, and weakly monotone functions over them, provide a framework for solving fixed point equations involving non-monotone operations such as negation or complement, and have been used to give semantics to logic programs with negation. #R##N#More precisely, we consider stratified complete lattices subject to two slightly different systems of axioms defining `models' and `strong models'. We prove that a stratified complete lattice is a model iff it is isomorphic to the stratified complete lattice determined by the limit of an inverse system of complete lattices with `locally completely additive' projections. Moreover, we prove that a stratified complete lattice is a strong model iff it is isomorphic to the stratified complete lattice determined by the limit of an inverse system of complete lattices with completely additive projections. #R##N#We use the inverse limit representation to give alternative proofs of some recent results and to derive some new ones for models and strong models. In particular, we use the representation theorem to prove that every model gives rise to another complete lattice structure, which in limit models corresponds to the lexicographic order. Moreover, we prove that the set of all fixed points of a weakly monotone function over a model, equipped with the new ordering, is a complete lattice. We also consider symmetric models that satisfy, together with each axiom, the dual axiom, and use the inverse limit representation to prove that every strong model is symmetric.

Includes members:
  Member "a fixed point theorem for non monotonic functions":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "approximation fixpoint theory and the well founded semantics of higher order logic programs")
  Member "minimum model semantics for extensional higher order logic programming with negation":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "approximation fixpoint theory and the well founded semantics of higher order logic programs")
  Member "minimum model semantics for logic programs with negation as failure":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "extensional semantics for higher order logic programs with negation")

Question: Please tell me which class the source paper 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)