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: "constacyclic codes over finite fields"
  Abstract: Abstract   An equivalence relation called isometry is introduced to classify constacyclic codes over a finite field; the polynomial generators of constacyclic codes of length      l    t      p    s      are characterized, where  p  is the characteristic of the finite field and  l  is a prime different from  p .

Connected through hyperedge HE-1 (induced by source paper "self reciprocal and self conjugate reciprocal irreducible factors of x n lambda and their applications"):
  with members:
    - "self conjugate reciprocal irreducible monic factors of x n 1 over finite fields and their applications"
    - "galois hulls of linear codes over finite fields"
    - "sigma self orthogonal constacyclic codes of length p s over mathbb f_ p m u mathbb f_ p m"
    - "galois lcd codes over finite fields"
    - "lcd cyclic codes over finite fields"

Connected through hyperedge HE-2 (induced by source paper "iso orthogonality and type ii duadic constacyclic codes"):
  with members:
    - "polyadic constacyclic codes"
    - "on the existence of self dual permutation codes of finite groups"
    - "computational results of duadic double circulant codes"
    - "duadic group algebra codes"

Connected through hyperedge HE-3 (induced by source paper "a construction of mds quantum convolutional codes"):
  with members:
    - "application of constacyclic codes to quantum mds codes"
    - "css like constructions of asymmetric quantum codes"
    - "on optimal constacyclic codes"

Connected through hyperedge HE-4 (induced by source paper "on repeated root constacyclic codes of length 2 amp r over finite fields"):
  with members:
    - "some constacyclic codes over finite chain rings"

Connected through hyperedge HE-5 (induced by source paper "application of constacyclic codes to quantum mds codes"):
  with members:
    - "euclidean and hermitian self orthogonal algebraic geometry codes and their application to quantum codes"
    - "a construction of new quantum mds codes"
    - "construction of n n 4 3 q quantum codes for odd prime power q"

Connected through hyperedge HE-6 (induced by source paper "polyadic constacyclic codes"):
  with members:
    - "computational results of duadic double circulant codes"
    - "duadic group algebra codes"

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)