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: "strict self assembly of discrete sierpinski triangles"
  Abstract: Winfree (1998) showed that discrete Sierpinski triangles can self-assemble in the Tile Assembly Model. A striking molecular realization of this self-assembly, using DNA tiles a few nanometers long and verifying the results by atomic-force microscopy, was achieved by Rothemund, Papadakis, and Winfree (2004). Precisely speaking, the above self-assemblies tile completely filled-in, two-dimensional regions of the plane, with labeled subsets of these tiles representing discrete Sierpinski triangles. This paper addresses the more challenging problem of the strict self-assembly of discrete Sierpinski triangles, i.e., the task of tiling a discrete Sierpinski triangle and nothing else. We first prove that the standard discrete Sierpinski triangle cannot strictly self-assemble in the Tile Assembly Model. We then define the fibered Sierpinski triangle, a discrete Sierpinski triangle with the same fractal dimension as the standard one but with thin fibers that can carry data, and show that the fibered Sierpinski triangle strictly self-assembles in the Tile Assembly Model. In contrast with the simple XOR algorithm of the earlier, non-strict self-assemblies, our strict self-assembly algorithm makes extensive, recursive use of optimal counters, coupled with measured delay and corner-turning operations. We verify our strict self-assembly using the local determinism method of Soloveichik and Winfree (2007).

Connected through hyperedge HE-1 (induced by source paper "geometric tiles and powers and limitations of geometric hindrance in self assembly"):
  with members:
    - "the non cooperative tile assembly model is not intrinsically universal or capable of bounded turing machine simulation"
    - "self assembly of shapes at constant scale using repulsive forces"
    - "computing in continuous space with self assembling polygonal tiles"
    - "doubles and negatives are positive in self assembly"
    - "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"
    - "intrinsic universality in tile self assembly requires cooperation"
    - "self assembly with geometric tiles"

Connected through hyperedge HE-2 (induced by source paper "cyclic oritatami systems cannot fold infinite fractal curves"):
  with members:
    - "non deterministic self assembly of two tile types on a lattice"
    - "hierarchical self assembly of fractals with signal passing tiles"
    - "efficient universal computation by greedy molecular folding"

Connected through hyperedge HE-3 (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"
    - "scaled tree fractals do not strictly self assemble"
    - "strict self assembly of fractals using multiple hands"
    - "parallelism and time in hierarchical self assembly"
    - "approximate self assembly of the sierpinski triangle"
    - "self assembly of the discrete sierpinski carpet and related fractals"

Connected through hyperedge HE-4 (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-5 (induced by source paper "universal simulation of directed systems in the abstract tile assembly model requires undirectedness"):
  with members:
    - "the simulation powers and limitations of higher temperature hierarchical self assembly systems"
    - "computing in continuous space with self assembling polygonal tiles"
    - "doubles and negatives are positive in self assembly"
    - "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"
    - "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"

Connected through hyperedge HE-6 (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"
    - "scaled tree fractals do not strictly self assemble"
    - "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"

Connected through hyperedge HE-7 (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"
    - "on the equivalence of cellular automata and the tile assembly model"
    - "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"

Connected through hyperedge HE-8 (induced by source paper "strict self assembly of fractals using multiple hands"):
  with members:
    - "scaled tree fractals do not strictly self assemble"
    - "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"

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.DM(Discrete Mathematics)