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: "induction coinduction and fixed points in pl type theory"
  Abstract: Recently we presented a concise survey of the formulation of the induction and coinduction principles, and some concepts related to them, in programming languages type theory and four other mathematical disciplines. The presentation in type theory involved the separate formulation of these concepts, first, in the theory of types of functional programming languages and, next, in the theory of types of object-oriented programming languages. In this article we show that separating these two formulations helps demonstrate some of the fundamental differences between structural subtyping, predominant in functional programming languages, and nominal subtyping, predominant in object-oriented programming languages---including differences concerning type negation and concerning the existence of inductive types, of coinductive types, and of approximations thereof. In the article we also motivate mutual coinduction and mutual coinductive types, and their approximations, and we discuss in brief the potential relevance of these concepts to object-oriented programming (OOP) type theory.

Connected through hyperedge HE-1 (induced by source paper "java generics an order theoretic approach abridged outline"):
  with members:
    - "induction coinduction and fixed points intuitions and tutorial"
    - "java generics an order theoretic approach detailed outline"
    - "towards taming java wildcards and extending java with interval types"
    - "java subtyping as an infinite self similar partial graph product"
    - "doubly f bounded generics"
    - "towards understanding generics"

Connected through hyperedge HE-2 (induced by source paper "mutual coinduction"):
  with members:
    - "java generics an order theoretic approach abridged outline"
    - "induction coinduction and fixed points intuitions and tutorial"
    - "induction coinduction and fixed points a concise comparative survey"
    - "object oriented theorem proving ootp first thoughts"
    - "set theory for verification ii induction and recursion"

Connected through hyperedge HE-3 (induced by source paper "using category theory in modeling generics in oop outline"):
  with members:
    - "java generics an order theoretic approach detailed outline"

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.LO(Logic in Computer Science)