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: "reward sharing schemes for stake pools"
  Abstract: We introduce and study reward sharing schemes that promote the fair formation of stake pools in collaborative projects that involve a large number of stakeholders such as the maintenance of a proof-of-stake (PoS) blockchain. Our mechanisms are parameterised by a target value for the desired number of pools. We show that by properly incentivising participants, the desired number of stake pools is a non-myopic Nash equilibrium arising from rational play. Our equilibria also exhibit an efficiency / security tradeoff via a parameter that allows them to be calibrated and include only the pools with the smallest possible cost or provide protection against Sybil attacks, the setting where a single stakeholder creates a large number of pools in the hopes to dominate the collaborative project. We also experimentally demonstrate the reachability of such equilibria in dynamic environments where players react to each others strategic moves over an indefinite period of interactive play, while showing how simple reward sharing schemes, such that inspired by Bitcoin, converge to centralisation.

Connected through hyperedge HE-1 (induced by source paper "a survey on applications of game theory in blockchain"):
  with members:
    - "a survey on consensus mechanisms and mining strategy management in blockchain networks"
    - "security services using blockchains a state of the art survey"
    - "blockchain governance game"
    - "exchange of renewable energy among prosumers using blockchain with dynamic pricing"
    - "game of coins"
    - "delayed blockchain protocols"
    - "a survey on the security of blockchain systems"
    - "astraea a decentralized blockchain oracle"

Connected through hyperedge HE-2 (induced by source paper "presto a systematic framework for blockchain consensus protocols"):
  with members:
    - "oceanic games centralization risks and incentives in blockchain mining"
    - "weighted voting on the blockchain improving consensus in proof of stake protocols"
    - "blockchain trilemma solver algorand has dilemma over undecidable messages"
    - "blockchain technologies for the internet of things research issues and challenges"
    - "strongchain transparent and collaborative proof of work consensus"
    - "a survey on consensus mechanisms and mining strategy management in blockchain networks"
    - "sok tools for game theoretic models of security for cryptocurrencies"
    - "incentives in ethereum s hybrid casper protocol"

Connected through hyperedge HE-3 (induced by source paper "sok tools for game theoretic models of security for cryptocurrencies"):
  with members:
    - "oceanic games centralization risks and incentives in blockchain mining"
    - "a survey on consensus mechanisms and mining strategy management in blockchain networks"
    - "selfish mining in ethereum"
    - "impossibility of full decentralization in permissionless blockchains"
    - "squirrl automating attack discovery on blockchain incentive mechanisms with deep reinforcement learning"
    - "an axiomatic approach to block rewards"
    - "compounding of wealth in proof of stake cryptocurrencies"
    - "blockmania from block dags to consensus"

Connected through hyperedge HE-4 (induced by source paper "weighted voting on the blockchain improving consensus in proof of stake protocols"):
  with members:
    - "incentives in ethereum s hybrid casper protocol"
    - "hyperledger fabric a distributed operating system for permissioned blockchains"
    - "rethinking blockchain security position paper"
    - "betting on blockchain consensus with fantomette"
    - "consensus in the age of blockchains"
    - "multiplicative weights update with constant step size in congestion games convergence limit cycles and chaos"
    - "casper the friendly finality gadget"
    - "untangling blockchain a data processing view of blockchain systems"

Connected through hyperedge HE-5 (induced by source paper "oceanic games centralization risks and incentives in blockchain mining"):
  with members:
    - "weighted voting on the blockchain improving consensus in proof of stake protocols"
    - "incentives in ethereum s hybrid casper protocol"
    - "compounding of wealth in proof of stake cryptocurrencies"
    - "bitcoin a natural oligopoly"
    - "socially optimal mining pools"
    - "blockchain mining games"
    - "cryptocurrencies without proof of work"
    - "the miner s dilemma"

Connected through hyperedge HE-6 (induced by source paper "impossibility of full decentralization in permissionless blockchains"):
  with members:
    - "bitcoin vs bitcoin cash coexistence or downfall of bitcoin cash"
    - "is stellar as secure as you think"
    - "decentralization in bitcoin and ethereum networks"
    - "the gap game"
    - "be selfish and avoid dilemmas fork after withholding faw attacks on bitcoin"
    - "hijacking bitcoin routing attacks on cryptocurrencies"
    - "the miner s dilemma"
    - "majority is not enough bitcoin mining is vulnerable"

Connected through hyperedge HE-7 (induced by source paper "incentives in ethereum s hybrid casper protocol"):
  with members:
    - "the impact of uncle rewards on selfish mining in ethereum"
    - "casper the friendly finality gadget"
    - "blockchain mining games"
    - "algorand the efficient and democratic ledger"
    - "optimal selfish mining strategies in bitcoin"
    - "cryptocurrencies without proof of work"
    - "majority is not enough bitcoin mining is vulnerable"

Connected through hyperedge HE-8 (induced by source paper "cryptocurrency egalitarianism a quantitative approach"):
  with members:
    - "compounding of wealth in proof of stake cryptocurrencies"
    - "casper the friendly finality gadget"
    - "blockchain mining games"
    - "optimal selfish mining strategies in bitcoin"
    - "majority is not enough bitcoin mining is vulnerable"

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.GT(Computer Science and Game Theory)