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: "the galois complexity of graph drawing why numerical solutions are ubiquitous for force directed spectral and circle packing drawings"
  Abstract: Many well-known graph drawing techniques, including force directed drawings, spectral graph layouts, multidimensional scaling, and circle packings, have algebraic formulations. However, practical methods for producing such drawings ubiquitously use iterative numerical approximations rather than constructing and then solving algebraic expressions representing their exact solutions. To explain this phenomenon, we use Galois theory to show that many variants of these problems have solutions that cannot be expressed by nested radicals or nested roots of low-degree polynomials. Hence, such solutions cannot be computed exactly even in extended computational models that include such operations.

Connected through hyperedge HE-1 (induced by source paper "computing circle packing representations of planar graphs"):
  with members:
    - "matrix scaling and balancing via box constrained newton s method and interior point methods"
    - "strongly monotone drawings of planar graphs"
    - "approximate gaussian elimination for laplacians fast sparse and simple"
    - "sparsified cholesky and multigrid solvers for connection laplacians"
    - "balanced circle packings for planar graphs"
    - "an efficient parallel solver for sdd linear systems"
    - "efficient accelerated coordinate descent methods and faster algorithms for solving linear systems"
    - "a simple combinatorial algorithm for solving sdd systems in nearly linear time"

Connected through hyperedge HE-2 (induced by source paper "existence and hardness of conveyor belts"):
  with members:
    - "counting polygon triangulations is hard"
    - "fun with fonts algorithmic typography"

Connected through hyperedge HE-3 (induced by source paper "the complexity of drawing a graph in a polygonal region"):
  with members:
    - "the art gallery problem is exists mathbb r complete"
    - "forall exists mathbb r completeness and area universality"
    - "on the complexity of minimum link path problems"
    - "irrational guards are sometimes needed"
    - "drawing partially embedded and simultaneously planar graphs"
    - "intersection graphs of segments and exists mathbb r"
    - "drawing graphs in the plane with a prescribed outer face and polynomial area"

Connected through hyperedge HE-4 (induced by source paper "contact representations of graphs in 3d"):
  with members:
    - "equilateral l contact graphs"
    - "rectangular layouts and contact graphs"

Connected through hyperedge HE-5 (induced by source paper "primal dual representations of planar graphs and l contact representations of optimal 1 planar graphs"):
  with members:
    - "equilateral l contact graphs"
    - "rectangular layouts and contact graphs"

Connected through hyperedge HE-6 (induced by source paper "balanced circle packings for planar graphs"):
  with members:
    - "strict confluent drawing"
    - "planar lombardi drawings for subcubic graphs"
    - "optimal polygonal representation of planar graphs"
    - "optimal moebius transformations for information visualization and meshing"

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)