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: "planar graphs have bounded queue number"
  Abstract: We show that planar graphs have bounded queue-number, thus proving a conjecture of Heath, Leighton and Rosenberg from 1992. The key to the proof is a new structural tool called layered partitions, and the result that every planar graph has a vertex-partition and a layering, such that each part has a bounded number of vertices in each layer, and the quotient graph has bounded treewidth. This result generalises for graphs of bounded Euler genus. Moreover, we prove that every graph in a minor-closed class has such a layered partition if and only if the class excludes some apex graph. Building on this work and using the graph minor structure theorem, we prove that every proper minor-closed class of graphs has bounded queue-number. #R##N#Layered partitions have strong connections to other topics, including the following two examples. First, they can be interpreted in terms of strong products. We show that every planar graph is a subgraph of the strong product of a path with some graph of bounded treewidth. Similar statements hold for all proper minor-closed classes. Second, we give a simple proof of the result by DeVos et al. (2004) that graphs in a proper minor-closed class have low treewidth colourings.

Connected through hyperedge HE-1 (induced by source paper "adjacency labelling for planar graphs and beyond"):
  with members:
    - "shorter labeling schemes for planar graphs"
    - "an annotated bibliography on 1 planarity"
    - "near optimal induced universal graphs for bounded degree graphs"
    - "optimal induced universal graphs and adjacency labeling for trees"
    - "simpler faster and shorter labels for distances in graphs"
    - "sublinear distance labeling"
    - "distance labeling schemes for trees"
    - "adjacency labeling schemes and induced universal graphs"

Connected through hyperedge HE-2 (induced by source paper "an experimental study of a 1 planarity testing and embedding algorithm"):
  with members:
    - "a survey on graph drawing beyond planarity"
    - "parameterized complexity of 1 planarity"
    - "recognizing optimal 1 planar graphs in linear time"
    - "embedding preserving rectangle visibility representations of nonplanar graphs"
    - "an annotated bibliography on 1 planarity"
    - "crossing patterns in nonplanar road networks"
    - "re embedding a 1 plane graph into a straight line drawing in linear time"
    - "ortho polygon visibility representations of embedded graphs"

Connected through hyperedge HE-3 (induced by source paper "line and plane cover numbers revisited"):
  with members:
    - "cubic planar graphs that cannot be drawn on few lines"
    - "drawing planar graphs with few geometric primitives"
    - "experimental analysis of the accessibility of drawings with few segments"
    - "the complexity of drawing graphs on few lines and few planes"
    - "drawing graphs on few lines and few planes"

Connected through hyperedge HE-4 (induced by source paper "improved bounds for track numbers of planar graphs"):
  with members:
    - "queue layouts of planar 3 trees"
    - "on the queue number of graphs with bounded tree width"
    - "layout of graphs with bounded tree width"

Connected through hyperedge HE-5 (induced by source paper "mixed linear layouts complexity heuristics and experiments"):
  with members:
    - "experimental evaluation of book drawing algorithms"
    - "mixed linear layouts of planar graphs"

Connected through hyperedge HE-6 (induced by source paper "planar graphs of bounded degree have constant queue number"):
  with members:
    - "queue layouts of planar 3 trees"
    - "mixed linear layouts of planar graphs"
    - "stack and queue layouts via layered separators"
    - "on the queue number of graphs with bounded tree width"
    - "graph layouts via layered separators"
    - "layout of graphs with bounded tree width"

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)