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: "scaled tree fractals do not strictly self assemble"
  Abstract: In this paper, we show that any scaled-up version of any discrete self-similar {\it tree} fractal does not strictly self-assemble, at any temperature, in Winfree's abstract Tile Assembly Model.

Connected through hyperedge HE-1 (induced by source paper "hierarchical growth is necessary and sometimes sufficient to self assemble discrete self similar fractals"):
  with members:
    - "self assembly of 4 sided fractals in the two handed tile assembly model"
    - "hierarchical self assembly of fractals with signal passing tiles extended abstract"
    - "hierarchical self assembly of fractals with signal passing tiles"
    - "strict self assembly of fractals using multiple hands"
    - "parallelism and time in hierarchical self assembly"
    - "approximate self assembly of the sierpinski triangle"
    - "strict self assembly of discrete sierpinski triangles"
    - "self assembly of the discrete sierpinski carpet and related fractals"

Connected through hyperedge HE-2 (induced by source paper "self assembly of 4 sided fractals in the two handed tile assembly model"):
  with members:
    - "hierarchical growth is necessary and sometimes sufficient to self assemble discrete self similar fractals"
    - "the non cooperative tile assembly model is not intrinsically universal or capable of bounded turing machine simulation"
    - "universal simulation of directed systems in the abstract tile assembly model requires undirectedness"
    - "hierarchical self assembly of fractals with signal passing tiles extended abstract"
    - "hierarchical self assembly of fractals with signal passing tiles"
    - "self assembly of shapes at constant scale using repulsive forces"
    - "universal shape replicators via self assembly with attractive and repulsive forces"
    - "the simulation powers and limitations of higher temperature hierarchical self assembly systems"

Connected through hyperedge HE-3 (induced by source paper "hierarchical self assembly of fractals with signal passing tiles"):
  with members:
    - "self assembly of 4 sided fractals in the two handed tile assembly model"
    - "hierarchical self assembly of fractals with signal passing tiles extended abstract"
    - "replication of arbitrary hole free shapes via self assembly with signal passing tiles extended abstract"
    - "strict self assembly of fractals using multiple hands"
    - "signal transmission across tile assemblies 3d static tiles simulate active self assembly by 2d signal passing tiles"
    - "asynchronous signal passing for tile self assembly fuel efficient computation and efficient assembly of shapes"
    - "two hands are better than one up to constant factors"
    - "approximate self assembly of the sierpinski triangle"

Connected through hyperedge HE-4 (induced by source paper "strict self assembly of fractals using multiple hands"):
  with members:
    - "the two handed tile assembly model is not intrinsically universal"
    - "producibility in hierarchical self assembly"
    - "intrinsic universality in tile self assembly requires cooperation"
    - "fuel efficient computation in passive self assembly"
    - "asynchronous signal passing for tile self assembly fuel efficient computation and efficient assembly of shapes"
    - "two hands are better than one up to constant factors"
    - "parallelism and time in hierarchical self assembly"
    - "self assembly with geometric tiles"

Connected through hyperedge HE-5 (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"
    - "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"
    - "the two handed tile assembly model is not intrinsically universal"

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.CG(Computational Geometry)