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: "minimal and short representations of unit interval and unit circular arc graphs"
  Abstract: We consider the unrestricted, minimal, and bounded representation problems for unit interval (UIG) and unit circular-arc (UCA) graphs. In the unrestricted version, a proper circular-arc (PCA) model $\cal M$ is given and the goal is to obtain an equivalent UCA model $\cal U$. We show a linear time algorithm with negative certification that can also be implemented to run in logspace. In the bounded version, $\cal M$ is given together with some lower and upper bounds that the beginning points of $\cal U$ must satisfy. We develop a linear space $O(n^2)$ time algorithm for this problem. Finally, in the minimal version, the circumference of the circle and the length of the arcs in $\cal U$ must be simultaneously as minimum as possible. We prove that every UCA graph admits such a minimal model, and give a polynomial time algorithm to find it. We also consider the minimal representation problem for UIG graphs. As a bad result, we show that the previous linear time algorithm fails to provide a minimal model for some input graphs. We fix this algorithm but, unfortunately, it runs in linear space $O(n^2)$ time. Finally, we apply the minimal representation algorithms so as to find the minimum powers of paths and cycles that contain a given UIG and UCA models, respectively.

Connected through hyperedge HE-1 (induced by source paper "on the isomorphism problem for helly circular arc graphs"):
  with members:
    - "solving the canonical representation and star system problems for proper circular arc graphs in log space"
    - "isomorphism of graph classes related to the circular ones property"

Connected through hyperedge HE-2 (induced by source paper "on the classes of interval graphs of limited nesting and count of lengths"):
  with members:
    - "extending partial representations of unit circular arc graphs"
    - "on the thinness and proper thinness of a graph"
    - "fo model checking of interval graphs"
    - "type based self stabilisation for computational fields"
    - "fo model checking on posets of bounded width"
    - "bounded representations of interval and proper interval graphs"
    - "extending partial representations of interval graphs"
    - "extending partial representations of circle graphs"

Connected through hyperedge HE-3 (induced by source paper "extending partial representations of circle graphs"):
  with members:
    - "the partial visibility representation extension problem"
    - "completing orientations of partially oriented graphs"
    - "bounded representations of interval and proper interval graphs"
    - "extending partial representations of interval graphs"
    - "linear time algorithm for partial representation extension of interval graphs"
    - "extending partial representations of proper and unit interval graphs"
    - "extending partial representations of subclasses of chordal graphs"
    - "extending partial representations of function graphs and permutation graphs"

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)