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: "complexity of the quorum intersection property of the federated byzantine agreement system"
  Abstract: A Federated Byzantine Agreement System is defined as a pair $(V, Q)$ comprising a set of nodes $V$ and a quorum function $Q: V \mapsto 2^{2^{V}} \setminus \{\emptyset\}$ specifying for each node a set of subsets of nodes, called quorum slices. A subset of nodes is a quorum if and only if for each of its nodes it also contains at least one of its quorum slices. The Disjoint Quorums Problem answers the question whether a given instance of \acrlong{fbas} contains two quorums that have no nodes in common. We show that this problem is $\mathsf{NP-complete}$. We also study the problem of finding a quorum of minimal size and show it is $\mathsf{NP-hard}$. Further, we consider the problem of checking whether a given subset of nodes contains a quorum for some selected node. We show this problem is $\mathsf{P-complete}$ and describe a method that solves it in linear time with respect to number of nodes and the total size of all quorum slices. Moreover, we analyze the complexity of some of these problems using the parametrized point of view.

Connected through hyperedge HE-1 (induced by source paper "the sum of its parts analysis of federated byzantine agreement systems"):
  with members:
    - "rationality is self defeating in permissionless systems"
    - "mathematical analysis and algorithms for federated byzantine agreement systems"
    - "mir bft high throughput bft for blockchains"
    - "committee selection is more similar than you think evidence from avalanche and stellar"
    - "is stellar as secure as you think"
    - "asymmetric distributed trust"

Connected through hyperedge HE-2 (induced by source paper "decentralization in open quorum systems"):
  with members:
    - "is stellar as secure as you think"
    - "analysis of the xrp ledger consensus protocol"
    - "cobalt bft governance in open networks"
    - "blockchains consensus protocols in the wild"
    - "a tutorial on modeling and analysis of dynamic social networks part i"
    - "majority is not enough bitcoin mining is vulnerable"

Connected through hyperedge HE-3 (induced by source paper "committee selection is more similar than you think evidence from avalanche and stellar"):
  with members:
    - "dfinity technology overview series consensus system"
    - "algorand the efficient and democratic ledger"

Connected through hyperedge HE-4 (induced by source paper "mathematical analysis and algorithms for federated byzantine agreement systems"):
  with members:
    - "the load and availability of byzantine quorum 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)