human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "bounding clique width via perfect graphs"):
  Abstract: Given two graphs $H_1$ and $H_2$, a graph $G$ is $(H_1,H_2)$-free if it contains no subgraph isomorphic to $H_1$ or $H_2$. We continue a recent study into the clique-width of $(H_1,H_2)$-free graphs and present three new classes of $(H_1,H_2)$-free graphs of bounded clique-width and one of unbounded clique-width. The four new graph classes have in common that one of their two forbidden induced subgraphs is the diamond (the graph obtained from a clique on four vertices by deleting one edge). To prove boundedness of clique-width for the first three cases we develop a technique based on bounding clique covering number in combination with reduction to subclasses of perfect graphs. We extend our proof of unboundedness for the fourth case to show that Graph Isomorphism is Graph Isomorphism-complete on the same graph class. We also show the implications of our results for the computational complexity of the Colouring problem restricted to $(H_1,H_2)$-free graphs.

Includes members:
  Member "the behavior of clique width under graph operations and graph transformations":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "clique width for graph classes closed under complementation")
  Member "bounding the clique width of h free chordal graphs":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "graph isomorphism for h_1 h_2 free graphs an almost complete dichotomy")
  Member "isomorphism testing for graphs of bounded rank width":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "hypergraph isomorphism for groups with restricted composition factors")
  Member "bounding the clique width of h free split graphs":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "graph isomorphism for h_1 h_2 free graphs an almost complete dichotomy")
  Member "clique width of graph classes defined by two forbidden induced subgraphs":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "theta triangle free and even hole k 4 free graphs part 2 bounds on treewidth")
  Member "classifying the clique width of h free bipartite graphs":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "on efficient domination for some classes of h free bipartite graphs")
  Member "towards an isomorphism dichotomy for hereditary graph classes":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "graph isomorphism for h_1 h_2 free graphs an almost complete dichotomy")
  Member "clique width and edge contraction":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "the behavior of clique width under graph operations and graph transformations")

Question: Please tell me which class the source paper 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)