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: "nested hoare triples and frame rules for higher order store"
  Abstract: Separation logic is a Hoare-style logic for reasoning about programs with#N#heap-allocated mutable data structures. As a step toward extending separation#N#logic to high-level languages with ML-style general (higher-order) storage, we#N#investigate the compatibility of nested Hoare triples with several variations#N#of higher-order frame rules. The interaction of nested triples and frame rules#N#can be subtle, and the inclusion of certain frame rules is in fact unsound. A#N#particular combination of rules can be shown consistent by means of a Kripke#N#model where worlds live in a recursively defined ultrametric space. The#N#resulting logic allows us to elegantly prove programs involving stored code. In#N#particular, using recursively defined assertions, it leads to natural#N#specifications and proofs of invariants required for dealing with recursion#N#through the store.

Connected through hyperedge HE-1 (induced by source paper "abstract effects and proof relevant logical relations"):
  with members:
    - "proof relevant logical relations for name generation"
    - "logical step indexed logical relations"

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)