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: "specifying and verifying concurrent algorithms with histories and subjectivity"
  Abstract: We present a lightweight approach to Hoare-style specifications for fine-grained concurrency, based on a notion of time-stamped histories that abstractly capture atomic changes in the program state. Our key observation is that histories form a partial commutative monoid, a structure fundamental for representation of concurrent resources. This insight provides us with a unifying mechanism that allows us to treat histories just like heaps in separation logic. For example, both are subject to the same assertion logic and inference rules (e.g., the frame rule). Moreover, the notion of ownership transfer, which usually applies to heaps, has an equivalent in histories. It can be used to formally represent helping---an important design pattern for concurrent algorithms whereby one thread can execute code on behalf of another. Specifications in terms of histories naturally abstract granularity, in the sense that sophisticated fine-grained algorithms can be given the same specifications as their simplified coarse-grained counterparts, making them equally convenient for client-side reasoning. We illustrate our approach on a number of examples and validate all of them in Coq.

Connected through hyperedge HE-1 (induced by source paper "specifying concurrent programs in separation logic morphisms and simulations"):
  with members:
    - "proving linearizability using forward simulations"
    - "concurrent data structures linked in time"
    - "hoare style specifications as correctness conditions for non linearizable concurrent objects"
    - "between linearizability and quiescent consistency quantitative quiescent consistency"
    - "linearizability with ownership transfer"
    - "flat combining and the synchronization parallelism tradeoff"

Connected through hyperedge HE-2 (induced by source paper "decoupling lock free data structures from memory reclamation for static analysis"):
  with members:
    - "verification of tree based hierarchical read copy update in the linux kernel"
    - "reclaiming memory for lock free data structures there has to be a better way"
    - "proving linearizability using forward simulations"
    - "verifying concurrent stacks by divergence sensitive bisimulation"
    - "effect summaries for thread modular analysis"
    - "concurrent data structures linked in time"
    - "pointer race freedom"
    - "faster linearizability checking via p compositionality"

Connected through hyperedge HE-3 (induced by source paper "operational aspects of c c concurrency"):
  with members:
    - "on thin air reads towards an event structures model of relaxed memory"
    - "new lace and arsenic adventures in weak memory with a program logic"
    - "relaxed operational semantics of concurrent programming languages"

Connected through hyperedge HE-4 (induced by source paper "a generic logic for proving linearizability extended version"):
  with members:
    - "verifying linearizability a comparative survey"
    - "linearizability with ownership transfer"

Connected through hyperedge HE-5 (induced by source paper "higher order linearisability"):
  with members:
    - "on thin air reads towards an event structures model of relaxed memory"
    - "flat combining and the synchronization parallelism tradeoff"

Connected through hyperedge HE-6 (induced by source paper "hoare style specifications as correctness conditions for non linearizable concurrent objects"):
  with members:
    - "between linearizability and quiescent consistency quantitative quiescent consistency"
    - "linearizability with ownership transfer"

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)