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: "how to obtain lattices from f sigma delta codes via a generalization of construction a"
  Abstract: We show how cyclic (f,sigma,delta)-codes over finite rings canonically induce a Z-lattice in R^N. The construction can be viewed as a generalization of the classical Construction A for lattices from linear codes and has applications to coset coding, in particular to wire-tap coding. Previous results for lattices obtained from sigma-constacyclic codes by Ducoat and Oggier are obtained as special cases.

Connected through hyperedge HE-1 (induced by source paper "finite nonassociative algebras obtained from twisted polynomials over chain rings"):
  with members:
    - "on skew polynomial codes and lattices from quotients of cyclic division algebras"
    - "a note on linear codes and nonassociative algebras obtained from skew polynomial rings"
    - "the nonassociative algebras used to build fast decodable space time block codes"
    - "a circulant approach to skew constacyclic codes"
    - "quotients of orders in cyclic algebras and space time codes"
    - "skew constacyclic codes over finite chain rings"

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.IT(Information Theory)