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: "rational streams coalgebraically"
  Abstract: We study rational streams (over a field) from a coalgebraic perspective. Ex- ploiting the finality of the set of streams, we present an elementary and uniform proof of the equivalence of four notions of representability of rational streams: by finite dimensional linear systems; by finite stream circuits; by finite weighted stream automata; and by finite dimensional subsystems of the set of streams.

Connected through hyperedge HE-1 (induced by source paper "contextual equivalence for signal flow graphs"):
  with members:
    - "a structural and nominal syntax for diagrams"
    - "interacting hopf algebras"
    - "monoidal computer ii normal complexity by string diagrams"
    - "monoidal computer i basic computability by string diagrams"

Connected through hyperedge HE-2 (induced by source paper "on the behaviour of coalgebras with side effects and algebras with effectful iteration"):
  with members:
    - "a new foundation for finitary corecursion and iterative algebras"
    - "proper semirings and proper convex functors"
    - "proper functors and fixed points for finite behaviour"
    - "regular behaviours with names"
    - "sound and complete axiomatizations of coalgebraic language equivalence"
    - "generalizing determinization from automata to coalgebras"
    - "nominal coalgebraic data types with applications to lambda calculus"
    - "semantics of higher order recursion schemes"

Connected through hyperedge HE-3 (induced by source paper "differentiable causal computations via delayed trace"):
  with members:
    - "guarded traced categories"
    - "the simple essence of automatic differentiation"
    - "diagrammatic semantics for digital circuits"
    - "stream differential equations specification formats and solution methods"
    - "infinite state energy games"

Connected through hyperedge HE-4 (induced by source paper "stream differential equations specification formats and solution methods"):
  with members:
    - "presenting distributive laws"
    - "sound and complete axiomatizations of coalgebraic language equivalence"
    - "coalgebraic characterizations of context free languages"
    - "automatic sequences and zip specifications"
    - "well definedness of streams by transformation and termination"
    - "representations of stream processors using nested fixed points"

Connected through hyperedge HE-5 (induced by source paper "regular behaviours with names"):
  with members:
    - "sound and complete axiomatizations of coalgebraic language equivalence"
    - "nominal coalgebraic data types with applications to lambda calculus"
    - "algebraic theories over nominal sets"
    - "full abstraction for nominal general references"

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)