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: "on the equivalence of cellular automata and the tile assembly model"
  Abstract: In this paper, we explore relationships between two models of systems which are governed by only the local interactions of large collections of simple components: cellular automata (CA) and the abstract Tile Assembly Model (aTAM). While sharing several similarities, the models have fundamental differences, most notably the dynamic nature of CA (in which every cell location is allowed to change state an infinite number of times) versus the static nature of the aTAM (in which tiles are static components that can never change or be removed once they attach to a growing assembly). We work with 2-dimensional systems in both models, and for our results we first define what it means for CA systems to simulate aTAM systems, and then for aTAM systems to simulate CA systems. We use notions of simulate which are similar to those used in the study of intrinsic universality since they are in some sense strict, but also intuitively natural notions of simulation. We then demonstrate a particular nondeterministic CA which can be configured so that it can simulate any arbitrary aTAM system, and finally an aTAM tile set which can be configured so that it can be used to simulate any arbitrary nondeterministic CA system which begins with a finite initial configuration.

Connected through hyperedge HE-1 (induced by source paper "the simulation powers and limitations of higher temperature hierarchical self assembly systems"):
  with members:
    - "doubles and negatives are positive in self assembly"
    - "the power of duples in self assembly it s not so hip to be square"
    - "signal transmission across tile assemblies 3d static tiles simulate active self assembly by 2d signal passing tiles"
    - "intrinsic universality in tile self assembly requires cooperation"
    - "intrinsic universality and the computational power of self assembly"
    - "intrinsic simulations between stochastic cellular automata"
    - "two hands are better than one up to constant factors"
    - "the tile assembly model is intrinsically universal"

Connected through hyperedge HE-2 (induced by source paper "parallel computation using active self assembly"):
  with members:
    - "more tight bounds for active self assembly using an insertion primitive"
    - "the two handed tile assembly model is not intrinsically universal"
    - "signal transmission across tile assemblies 3d static tiles simulate active self assembly by 2d signal passing tiles"
    - "active self assembly of algorithmic shapes and patterns in polylogarithmic time"
    - "intrinsic universality in tile self assembly requires cooperation"
    - "intrinsic universality and the computational power of self assembly"
    - "and and or or uniform polynomial size circuits"
    - "fast arithmetic in algorithmic self assembly"

Connected through hyperedge HE-3 (induced by source paper "intrinsic universality and the computational power of self assembly"):
  with members:
    - "the simulation powers and limitations of higher temperature hierarchical self assembly systems"
    - "it s a tough nanoworld in tile assembly cooperation is not strictly more powerful than competition"
    - "computing in continuous space with self assembling polygonal tiles"
    - "doubles and negatives are positive in self assembly"
    - "more tight bounds for active self assembly using an insertion primitive"
    - "scaled tree fractals do not strictly self assemble"
    - "universal computation with arbitrary polyomino tiles in non cooperative self assembly"
    - "the power of duples in self assembly it s not so hip to be square"

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.ET(Emerging Technologies)