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: "enumerating foldings and unfoldings between polygons and polytopes"
  Abstract: We pose and answer several questions concerning the number of ways to fold a polygon to a polytope, and how many polytopes can be obtained from one polygon; and the analogous questions for unfolding polytopes to polygons. Our answers are, roughly: exponentially many, or nondenumerably infinite.

Connected through hyperedge HE-1 (induced by source paper "which convex polyhedra can be made by gluing regular hexagons"):
  with members:
    - "a pseudopolynomial algorithm for alexandrov s theorem"

Connected through hyperedge HE-2 (induced by source paper "common edge unzippings for tetrahedra"):
  with members:
    - "flat zipper unfolding pairs for platonic solids"

Connected through hyperedge HE-3 (induced by source paper "flat zipper unfolding pairs for platonic solids"):
  with members:
    - "examples counterexamples and enumeration results for foldings and unfoldings between polygons and polytopes"

Connected through hyperedge HE-4 (induced by source paper "ununfoldable polyhedra with convex faces"):
  with members:
    - "vertex unfoldings of simplicial polyhedra"
    - "examples counterexamples and enumeration results for foldings and unfoldings between polygons and polytopes"

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)