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 "graph isomorphism for h_1 h_2 free graphs an almost complete dichotomy"):
  Abstract: We consider the Graph Isomorphism problem for classes of graphs characterized by two forbidden induced subgraphs $H_1$ and $H_2$. By combining old and new results, Schweitzer settled the computational complexity of this problem restricted to $(H_1,H_2)$-free graphs for all but a finite number of pairs $(H_1,H_2)$, but without explicitly giving the number of open cases. Grohe and Schweitzer proved that Graph Isomorphism is polynomial-time solvable on graph classes of bounded clique-width. By combining previously known results for Graph Isomorphism with known results for boundedness of clique-width, we reduce the number of open cases to 14. By proving a number of new results we then further reduce this number to seven. By exploiting the strong relationship between Graph Isomorphism and clique-width, we also prove that the class of $(\mbox{gem},P_1+2P_2)$-free graphs has unbounded clique-width. This reduces the number of open cases for boundedness of clique-width for $(H_1,H_2)$-free graphs to five.

Includes members:
  Member "canonisation and definability for graphs of bounded rank width":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "a linear upper bound on the weisfeiler leman dimension of graphs of bounded genus")
  Member "an improved isomorphism test for bounded tree width graphs":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "hypergraph isomorphism for groups with restricted composition factors")
  Member "a faster isomorphism test for graphs of small degree":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "hypergraph isomorphism for groups with restricted composition factors")
  Member "clique width for graph classes closed under complementation":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "hereditary graph classes when the complexities of colouring and clique cover coincide")
  Member "graph isomorphism for unit square graphs":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "hypergraph isomorphism for groups with restricted composition factors")
  Member "induced minor free graphs isomorphism and clique width":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "graph isomorphism restricted by lists")
  Member "bounding the clique width of h free chordal graphs":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "square free graphs with no six vertex induced path")
  Member "colouring diamond free graphs":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "theta triangle free and even hole k 4 free graphs part 2 bounds on treewidth")

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)