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: "bounding normalization time through intersection types"
  Abstract: Non-idempotent intersection types are used in order to give a bound of the length of the normalization beta-reduction sequence of a lambda term: namely, the bound is expressed as a function of the size of the term.

Connected through hyperedge HE-1 (induced by source paper "the vectorial λ calculus"):
  with members:
    - "typing quantum superpositions and measurement"
    - "two linearities for quantum computing in the lambda calculus"
    - "quantum superpositions and projective measurement in the lambda calculus"
    - "simply typed lambda calculus modulo type isomorphisms"
    - "call by value call by name and the vectorial behaviour of the algebraic λ calculus"
    - "call by value non determinism in a linear logic type discipline"
    - "non idempotent intersection types and strong normalisation"
    - "the probability of non confluent systems"

Connected through hyperedge HE-2 (induced by source paper "isomorphisms considered as equalities projecting functions and enhancing partial application through an implementation of λ"):
  with members:
    - "the vectorial λ calculus"
    - "quantum superpositions and projective measurement in the lambda calculus"
    - "simply typed lambda calculus modulo type isomorphisms"
    - "elaborating intersection and union types"
    - "call by value non determinism in a linear logic type discipline"
    - "non idempotent intersection types and strong normalisation"
    - "a system f accounting for scalars"

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)