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: "formal verification of multi paxos for distributed consensus"
  Abstract: This paper describes formal specification and verification of Lamport's Multi-Paxos algorithm for distributed consensus. The specification is written in TLA+, Lamport's Temporal Logic of Actions. The proof is written and automatically checked using TLAPS, a proof system for TLA+. The proof checks safety property of the specification. Building on Lamport, Merz, and Doligez's specification and proof for Basic Paxos, we aim to facilitate the understanding of Multi-Paxos and its proof by minimizing the difference from those for Basic Paxos, and to demonstrate a general way of proving other variants of Paxos and other sophisticated distributed algorithms. We also discuss our general strategies for proving properties about sets and tuples that helped the proof check succeed in significantly reduced time.

Connected through hyperedge HE-1 (induced by source paper "que sera consensus simple asynchronous agreement with private coins and threshold logical clocks"):
  with members:
    - "revisiting fast practical byzantine fault tolerance"
    - "enhancing bitcoin security and performance with strong consistency via collective signing"
    - "keeping authorities honest or bust with decentralized witness cosigning"
    - "on reducing the complexity of matrix clocks"
    - "randomized protocols for asynchronous consensus"

Connected through hyperedge HE-2 (induced by source paper "moderately complex paxos made simple high level executable specification of distributed algorithms"):
  with members:
    - "simpler specifications and easier proofs of distributed algorithms using history variables"
    - "paxos made epr decidable reasoning about distributed protocols"
    - "from clarity to efficiency for distributed algorithms"
    - "vive la difference paxos vs viewstamped replication vs zab"

Connected through hyperedge HE-3 (induced by source paper "simpler specifications and easier proofs of distributed algorithms using history variables"):
  with members:
    - "paxos made epr decidable reasoning about distributed protocols"
    - "auxiliary variables in tla"
    - "demand driven incremental object queries"
    - "from clarity to efficiency for distributed algorithms"
    - "a tla proof system"

Connected through hyperedge HE-4 (induced by source paper "paxos made epr decidable reasoning about distributed protocols"):
  with members:
    - "bounded quantifier instantiation for checking inductive invariants"
    - "a short counterexample property for safety and liveness verification of fault tolerant distributed algorithms"
    - "counting constraints in flat array fragments"
    - "flexible paxos quorum intersection revisited"

Connected through hyperedge HE-5 (induced by source paper "from clarity to efficiency for distributed algorithms"):
  with members:
    - "demand driven incremental object queries"
    - "a linear logic programming language for concurrent programming over graph structures"
    - "applying prolog to develop distributed systems"

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.DC(Distributed, Parallel, and Cluster Computing)