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: "pointer race freedom"
  Abstract: We propose a novel notion of pointer race for concurrent programs manipulating a shared heap. A pointer race is an access to a memory address which was freed, and it is out of the accessor's control whether or not the cell has been re-allocated. We establish two results. (1) Under the assumption of pointer race freedom, it is sound to verify a program running under explicit memory management as if it was running with garbage collection. (2) Even the requirement of pointer race freedom itself can be verified under the garbage-collected semantics. We then prove analogues of the theorems for a stronger notion of pointer race needed to cope with performance-critical code purposely using racy comparisons and even racy dereferences of pointers. As a practical contribution, we apply our results to optimize a thread-modular analysis under explicit memory management. Our experiments confirm a speed-up of up to two orders of magnitude.

Connected through hyperedge HE-1 (induced by source paper "pointer life cycle types for lock free data structures with memory reclamation"):
  with members:
    - "hyaline fast and transparent lock free memory reclamation"
    - "decoupling lock free data structures from memory reclamation for static analysis"
    - "safe deferred memory reclamation with types"
    - "reasoning about tso programs using reduction and abstraction"
    - "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"

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"
    - "faster linearizability checking via p compositionality"
    - "verifying linearizability a comparative survey"

Connected through hyperedge HE-3 (induced by source paper "effect summaries for thread modular analysis"):
  with members:
    - "a formally verified compiler back end"

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.PL(Programming Languages)