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 "slopes of 3 dimensional subshifts of finite type"):
  Abstract: In this paper we study the directions of periodicity of three-dimensional subshifts of finite type (SFTs) and in particular their slopes. A configuration of a subshift has a slope of periodicity if it is periodic in exactly one direction, the slope being the angles of the periodicity vector. In this paper, we prove that any \(\varSigma ^0_2\) set may be realized as a a set of slopes of an SFT.

Includes members:
  Member "an aperiodic set of 11 wang tiles":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "np completeness of the game kingdomino")
  Member "characterizations of periods of multidimensional shifts":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "aperiodic points in mathbb z 2 subshifts")
  Member "yet another aperiodic tile set":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "an aperiodic set of 11 wang tiles")
  Member "slopes of tilings":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "turing degree spectra of minimal subshifts")
  Member "fixed point tile sets and their applications":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "the expressiveness of quasiperiodic and minimal shifts of finite type")

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)