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: "triangulation of simple 3d shapes with well centered tetrahedra"
  Abstract: A completely well-centered tetrahedral mesh is a triangulation of a three dimensional domain in which every tetrahedron and every triangle contains its circumcenter in its interior. Such meshes have applications in scientific computing and other fields. We show how to triangulate simple domains using completely well-centered tetrahedra. The domains we consider here are space, infinite slab, infinite rectangular prism, cube and regular tetrahedron. We also demonstrate single tetrahedra with various combinations of the properties of dihedral acuteness, 2-well-centeredness and 3-well-centeredness.

Connected through hyperedge HE-1 (induced by source paper "cohomologous harmonic cochains"):
  with members:
    - "pydec software and algorithms for discretization of exterior calculus"
    - "least squares ranking on graphs"
    - "approaching optimality for solving sdd systems"
    - "well centered triangulation"
    - "geometric and combinatorial properties of well centered triangulations in three and higher dimensions"
    - "nearly linear time algorithms for preconditioning and solving symmetric diagonally dominant linear systems"
    - "nearly linear time algorithms for graph partitioning graph sparsification and solving linear systems"

Connected through hyperedge HE-2 (induced by source paper "well centered triangulation"):
  with members:
    - "a dihedral acute triangulation of the cube"
    - "geometric and combinatorial properties of well centered triangulations in three and higher dimensions"
    - "tiling space and slabs with acute tetrahedra"
    - "building space time meshes over arbitrary spatial domains"

Connected through hyperedge HE-3 (induced by source paper "geometric and combinatorial properties of well centered triangulations in three and higher dimensions"):
  with members:
    - "technical note delaunay hodge star"
    - "pydec software and algorithms for discretization of exterior calculus"
    - "well centered triangulation"

Connected through hyperedge HE-4 (induced by source paper "a dihedral acute triangulation of the cube"):
  with members:
    - "well centered triangulation"
    - "tiling space and slabs with acute tetrahedra"

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)