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: "ununfoldable polyhedra with convex faces"
  Abstract: Unfolding a convex polyhedron into a simple planar polygon is a well-studied problem. In this paper, we study the limits of unfoldability by studying nonconvex polyhedra with the same combinatorial structure as convex polyhedra. In particular, we give two examples of polyhedra, one with 24 convex faces and one with 36 triangular faces, that cannot be unfolded by cutting along edges. We further show that such a polyhedron can indeed be unfolded if cuts are allowed to cross faces. Finally, we prove that ``open'' polyhedra with triangular faces may not be unfoldable no matter how they are cut.

Connected through hyperedge HE-1 (induced by source paper "unfolding polyhedra"):
  with members:
    - "some polycubes have no edge unzipping"
    - "addendum to edge unfolding nearly flat convex caps"
    - "edge unfolding nearly flat convex caps"
    - "unfolding genus 2 orthogonal polyhedra with linear refinement"
    - "spiral unfoldings of convex polyhedra"
    - "existence of a polyhedron which does not have a non overlapping pseudo edge unfolding"
    - "a class of convex polyhedra with few edge unfoldings"
    - "unfolding orthogonal terrains"

Connected through hyperedge HE-2 (induced by source paper "un unzippable convex caps"):
  with members:
    - "addendum to edge unfolding nearly flat convex caps"
    - "edge unfolding nearly flat convex caps"
    - "unfolding convex polyhedra via radially monotone cut trees"
    - "spiral unfoldings of convex polyhedra"

Connected through hyperedge HE-3 (induced by source paper "unfolding genus 2 orthogonal polyhedra with linear refinement"):
  with members:
    - "unfolding orthogonal polyhedra with quadratic refinement the delta unfolding algorithm"
    - "unfolding manhattan towers"
    - "epsilon unfolding orthogonal polyhedra"

Connected through hyperedge HE-4 (induced by source paper "unfolding orthogrids with constant refinement"):
  with members:
    - "unfolding orthogonal terrains"

Connected through hyperedge HE-5 (induced by source paper "unfolding orthogonal polyhedra with quadratic refinement the delta unfolding algorithm"):
  with members:
    - "unfolding manhattan towers"
    - "epsilon unfolding orthogonal polyhedra"

Connected through hyperedge HE-6 (induced by source paper "continuous blooming of convex polyhedra"):
  with members:
    - "unfolding convex polyhedra via quasigeodesic star unfoldings"
    - "star unfolding convex polyhedra via quasigeodesic loops"
    - "epsilon unfolding orthogonal polyhedra"

Connected through hyperedge HE-7 (induced by source paper "an algorithmic study of manufacturing paperclips and other folded structures"):
  with members:
    - "when can you fold a map"
    - "locked and unlocked polygonal chains in 3d"

Connected through hyperedge HE-8 (induced by source paper "computational geometry column 42"):
  with members:
    - "emerging challenges in computational topology"
    - "linear complexity hexahedral mesh generation"

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)