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: "fair and square cake cutting in two dimensions"
  Abstract: We consider the classic problem of fairly dividing a heterogeneous good (“cake”) among several agents with different valuations. Classic cake-cutting procedures either allocate each agent a collection of disconnected pieces, or assume that the cake is a one-dimensional interval. In practice, however, the two-dimensional shape of the allotted pieces is important. In particular, when building a house or designing an advertisement in printed or electronic media, squares are more usable than long and narrow rectangles. We thus introduce and study the problem of fair two-dimensional division wherein the allotted pieces must be of some restricted two-dimensional geometric shape(s), particularly squares and fat rectangles. Adding such geometric constraints re-opens most questions and challenges related to cake-cutting. Indeed, even the most elementary fairness criterion–proportionality–can no longer be guaranteed. In this paper we thus examine the level of proportionality that can be guaranteed, providing both impossibility results and constructive division procedures.

Connected through hyperedge HE-1 (induced by source paper "dividing a graphical cake"):
  with members:
    - "fairly allocating contiguous blocks of indivisible items"
    - "maximin share allocations on cycles"
    - "connected fair allocation of indivisible goods"
    - "chore division on a graph"
    - "almost envy free allocations with connected bundles"
    - "pareto optimal allocation of indivisible goods with connectivity constraints"
    - "competitive division of a mixed manna"
    - "fair division of a graph"

Connected through hyperedge HE-2 (induced by source paper "obvious manipulations in cake cutting"):
  with members:
    - "fair cake cutting in practice"
    - "deterministic strategyproof and fair cake cutting"
    - "resource monotonicity and population monotonicity in connected cake cutting"
    - "cake cutting algorithms for piecewise constant and piecewise uniform valuations"
    - "truthful fair division"

Connected through hyperedge HE-3 (induced by source paper "how to re divide a cake fairly"):
  with members:
    - "cutting a cake without harming the toppings"
    - "envy free cake cutting in two dimensions"
    - "web and internet economics"
    - "cake cutting algorithms for piecewise constant and piecewise uniform valuations"
    - "online cake cutting"
    - "graph theoretic solutions to computational geometry problems"

Connected through hyperedge HE-4 (induced by source paper "to give or not to give fair division for single minded valuations"):
  with members:
    - "envy free cake cutting in two dimensions"
    - "characterization and computation of equilibria for indivisible goods"
    - "a discrete and bounded envy free cake cutting protocol for four agents"
    - "clearing markets via bundles"
    - "a unifying hierarchy of valuations with complements and substitutes"
    - "the complexity of fairness through equilibrium"

Connected through hyperedge HE-5 (induced by source paper "envy free division of land"):
  with members:
    - "monotonicity and competitive equilibrium in cake cutting"
    - "a discrete and bounded envy free cake cutting protocol for any number of agents"
    - "waste makes haste bounded time algorithms for envy free cake cutting with free disposal"
    - "envy free cake cutting in two dimensions"
    - "redividing the cake"
    - "rental harmony with roommates"

Connected through hyperedge HE-6 (induced by source paper "fair cake cutting among families"):
  with members:
    - "almost envy freeness in group resource allocation"
    - "monotonicity and competitive equilibrium in cake cutting"
    - "the complexity of cake cutting with unequal shares"
    - "competitive division of a mixed manna"
    - "approximate maximin shares for groups of agents"
    - "resource monotonicity and population monotonicity in connected cake cutting"
    - "democratic fair allocation of indivisible goods"

Connected through hyperedge HE-7 (induced by source paper "two body assignment problem in the context of the israeli medical internship match"):
  with members:
    - "sorting and selection with imprecise comparisons"
    - "an approximate law of one price in random assignment games"
    - "the and or game equilibrium characterization working paper"
    - "non price equilibria in markets of discrete goods"

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.GT(Computer Science and Game Theory)