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: "arrangements of pseudocircles on circularizability"
  Abstract: An arrangement of pseudocircles is a collection of simple closed curves on the sphere or in the plane such that every pair is either disjoint or intersects in exactly two crossing points. We call an arrangement intersecting if every pair of pseudocircles intersects twice. An arrangement is circularizable if there is a combinatorially equivalent arrangement of circles. #R##N#Kang and M\"uller showed that every arrangement of at most 4 pseudocircles is circularizable. Linhart and Ortner found an arrangement of 5 pseudocircles which is not circularizable. #R##N#In this paper we show that there are exactly four non-circularizable arrangements of 5 pseudocircles, exactly one of them is intersecting. For $n=6$, we show that there are exactly three non-circularizable digon-free intersecting arrangements. We also have some additional examples of non-circularizable arrangements of 6 pseudocircles. #R##N#The proofs of non-circularizability use various techniques, most depend on incidence theorems, others use arguments involving metric properties of arrangements of planes, or angles in planar figures. The claims that we have all non-circularizable arrangements with the given properties are based on a program that generated all connected arrangements of $n\leq 6$ pseudocircles and all intersecting arrangements of $n\leq 7$ pseudocircles. Given the complete lists of arrangements, we used heuristics to find circle representations. Examples where the heuristics failed had to be examined by hand. #R##N#One of the digon-free intersecting arrangements of pseudocircles with $n=6$ is particularly interesting. It only has $8$ triangles and occurs as a subarrangement of every digon-free intersecting arrangement with less than $2n-4$ triangles for $n=7,8,9$. Hence it may be true that every digon-free intersecting arrangement of circles contains at least $2n-4$ triangles.

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.CG(Computational Geometry)