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: "on landau s eigenvalue theorem and information cut sets"
  Abstract: A variation of Landau's eigenvalue theorem describing the phase transition of the eigenvalues of a time-frequency limiting, self adjoint operator is presented. The total number of degrees of freedom of square-integrable, multi-dimensional, bandlimited functions is defined in terms of Kolmogorov's $n$-width and computed in some limiting regimes where the original theorem cannot be directly applied. Results are used to characterize up to order the total amount of information that can be transported in time and space by multiple-scattered electromagnetic waves, rigorously addressing a question originally posed in the early works of Toraldo di Francia and Gabor. Applications in the context of wireless communication and electromagnetic sensing are discussed.

Connected through hyperedge HE-1 (induced by source paper "spatial characterization of holographic mimo channels"):
  with members:
    - "degrees of freedom of holographic mimo channels"
    - "large system analysis of massive mimo with optimal m mmse processing"
    - "beyond massive mimo the potential of data transmission with large intelligent surfaces"
    - "massive mimo has unlimited capacity"
    - "optimal pilot and payload power control in single cell massive mimo systems"
    - "space constrained massive mimo hitting the wall of favorable propagation"
    - "a generalized spatial correlation model for 3d mimo channels based on the fourier coefficients of power spectrums"
    - "optimal design of energy efficient multi user mimo systems is massive mimo the answer"

Connected through hyperedge HE-2 (induced by source paper "spatially stationary model for holographic mimo small scale fading"):
  with members:
    - "degrees of freedom of holographic mimo channels"
    - "beyond massive mimo the potential of data transmission with large intelligent surfaces"
    - "massive mimo has unlimited capacity"
    - "ns 3 implementation of the 3gpp mimo channel model for frequency spectrum above 6 ghz"
    - "optimal pilot and payload power control in single cell massive mimo systems"
    - "a generalized spatial correlation model for 3d mimo channels based on the fourier coefficients of power spectrums"
    - "optimal design of energy efficient multi user mimo systems is massive mimo the answer"
    - "energy and spectral efficiency of very large multiuser mimo systems"

Connected through hyperedge HE-3 (induced by source paper "degrees of freedom of holographic mimo channels"):
  with members:
    - "beyond massive mimo the potential of data transmission with large intelligent surfaces"

Connected through hyperedge HE-4 (induced by source paper "efficient dsp and circuit architectures for massive mimo state of the art and future directions"):
  with members:
    - "beyond massive mimo the potential of data transmission with large intelligent surfaces"
    - "out of band radiation from antenna arrays clarified"
    - "spatial characteristics of distortion radiated from antenna arrays with transceiver nonlinearities"
    - "decentralized baseband processing for massive mu mimo systems"
    - "performance characterization of a real time massive mimo system with los mobile channels"
    - "channel estimation and performance analysis of one bit massive mimo systems"
    - "on out of band emissions of quantized precoding in massive mu mimo ofdm"
    - "achievable uplink rates for massive mimo with coarse quantization"

Connected through hyperedge HE-5 (induced by source paper "the information and wave theoretic limits of analog beamforming"):
  with members:
    - "on reciprocity in physically consistent tdd systems with coupled antennas"
    - "massive mimo for next generation wireless systems"
    - "five disruptive technology directions for 5g"

Connected through hyperedge HE-6 (induced by source paper "time limited toeplitz operators on abelian groups applications in information theory and subspace approximation"):
  with members:
    - "the eigenvalue distribution of discrete periodic time frequency limiting operators"
    - "on the asymptotic equivalence of circulant and toeplitz matrices"
    - "fast algorithms for the computation of fourier extensions of arbitrary length"
    - "greed is super a fast algorithm for super resolution"
    - "approximating sampled sinusoids and multiband signals using multiband modulated dpss dictionaries"
    - "compressive sensing of analog signals using discrete prolate spheroidal sequences"
    - "eigenvalue based spectrum sensing algorithms for cognitive radio"

Connected through hyperedge HE-7 (induced by source paper "deterministic coding theorems for blind sensing optimal measurement rate and fractal dimension"):
  with members:
    - "efficient blind compressed sensing using sparsifying transforms with convergence guarantees and application to mri"
    - "information theoretically optimal compressed sensing via spatial coupling and approximate message passing"
    - "compressive sensing of analog signals using discrete prolate spheroidal sequences"
    - "optimal phase transitions in compressed sensing"
    - "from theory to practice sub nyquist sampling of sparse wideband analog signals"
    - "blind compressed sensing"

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)