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: "settling the feasibility of interference alignment for the mimo interference channel the symmetric square case"
  Abstract: Determining the feasibility conditions for vector space interference alignment in the K-user MIMO interference channel with constant channel coefficients has attracted much recent attention yet remains unsolved. The main result of this paper is restricted to the symmetric square case where all transmitters and receivers have N antennas, and each user desires d transmit dimensions. We prove that alignment is possible if and only if the number of antennas satisfies N>= d(K+1)/2. We also show a necessary condition for feasibility of alignment with arbitrary system parameters. An algebraic geometry approach is central to the results.

Connected through hyperedge HE-1 (induced by source paper "generalized interference alignment part i theoretical framework"):
  with members:
    - "the feasibility conditions for interference alignment in mimo networks"
    - "on the degrees of freedom achievable through interference alignment in a mimo interference channel"
    - "a feasibility test for linear interference alignment in mimo channels with constant coefficients"
    - "subspace alignment chains and the degrees of freedom of the three user mimo interference channel"
    - "interference alignment for secrecy"
    - "cooperative algorithms for mimo interference channels"
    - "interference alignment as a rank constrained rank minimization"
    - "ergodic secret alignment"

Connected through hyperedge HE-2 (induced by source paper "genie chains exploring outer bounds on the degrees of freedom of mimo interference networks"):
  with members:
    - "feasibility of interference alignment for the mimo interference channel"
    - "on the degrees of freedom achievable through interference alignment in a mimo interference channel"
    - "a feasibility test for linear interference alignment in mimo channels with constant coefficients"
    - "degrees of freedom of mimo x networks spatial scale invariance one sided decomposability and linear feasibility"
    - "degrees of freedom of interference channels with comp transmission and reception"
    - "subspace alignment chains and the degrees of freedom of the three user mimo interference channel"
    - "geometry of the 3 user mimo interference channel"
    - "interference alignment for the k user mimo interference channel"

Connected through hyperedge HE-3 (induced by source paper "channel diversity needed for vector space interference alignment"):
  with members:
    - "feasibility of interference alignment for the mimo interference channel"
    - "on the degrees of freedom achievable through interference alignment in a mimo interference channel"
    - "geometry of the 3 user mimo interference channel"
    - "on feasibility of interference alignment in mimo interference networks"
    - "on feasibility of interference alignment in mimo interference networks"
    - "interference alignment with asymmetric complex signaling settling the host madsen nosratinia conjecture"
    - "approaching the capacity of wireless networks through distributed interference alignment"

Connected through hyperedge HE-4 (induced by source paper "capacity bounds for the k user gaussian interference channel"):
  with members:
    - "on the high snr capacity of the gaussian interference channel and new capacity bounds"
    - "real interference alignment exploiting the potential of single antenna systems"
    - "the approximate sum capacity of the symmetric gaussian k user interference channel"
    - "wireless network information flow a deterministic approach"
    - "interference alignment from degrees of freedom to constant gap capacity approximations"
    - "a new sum rate outer bound for interference channels with three source destination pairs"
    - "k user interference channels general outer bound and sum capacity for certain gaussian channels"
    - "the wideband slope of interference channels the large bandwidth case"

Connected through hyperedge HE-5 (induced by source paper "upper bounds of interference alignment degree of freedom"):
  with members:
    - "interference alignment using finite and dependent channel extensions the single beam case"
    - "on feasibility of interference alignment in mimo interference networks"
    - "on feasibility of interference alignment in mimo interference networks"

Connected through hyperedge HE-6 (induced by source paper "feasibility of interference alignment for the mimo interference channel"):
  with members:
    - "real interference alignment exploiting the potential of single antenna systems"
    - "on the number of interference alignment solutions for the k user mimo channel with constant coefficients"
    - "interference alignment using finite and dependent channel extensions the single beam case"
    - "the approximate sum capacity of the symmetric gaussian k user interference channel"
    - "on the degrees of freedom achievable through interference alignment in a mimo interference channel"
    - "a feasibility test for linear interference alignment in mimo channels with constant coefficients"
    - "interactive interference alignment"
    - "degrees of freedom of interference channels with comp transmission and reception"

Connected through hyperedge HE-7 (induced by source paper "beyond one way communication degrees of freedom of multi way relay mimo interference networks"):
  with members:
    - "degrees of freedom for the mimo multi way relay channel"
    - "the degrees of freedom of the mimo y channel"
    - "degrees of freedom for mimo two way x relay channel"
    - "on the degrees of freedom achievable through interference alignment in a mimo interference channel"
    - "a feasibility test for linear interference alignment in mimo channels with constant coefficients"
    - "degrees of freedom of mimo x networks spatial scale invariance one sided decomposability and linear feasibility"
    - "subspace alignment chains and the degrees of freedom of the three user mimo interference channel"
    - "on feasibility of interference alignment in mimo interference networks"

Connected through hyperedge HE-8 (induced by source paper "the dof of the asymmetric mimo interference channel with square direct link channel matrices"):
  with members:
    - "genie chains exploring outer bounds on the degrees of freedom of mimo interference networks"
    - "feasibility of interference alignment for the mimo interference channel"
    - "real interference alignment exploiting the potential of single antenna systems"
    - "subspace alignment chains and the degrees of freedom of the three user mimo interference channel"
    - "interference alignment for the mimo interference channel with delayed local csit"
    - "geometry of the 3 user mimo interference channel"
    - "interference alignment for the k user mimo interference channel"
    - "degrees of freedom of the k user m times n mimo interference channel"

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)