human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "ontomath digital ecosystem ontologies mathematical knowledge analytics and management"):
  Abstract: In this article we consider the basic ideas, approaches and results of developing of mathematical knowledge management technologies based on ontologies. These solutions form the basis of a specialized digital ecosystem OntoMath which consists of the ontology of the logical structure of mathematical documents Mocassin and ontology of mathematical knowledge OntoMathPRO, tools of text analysis, recommender system and other applications to manage mathematical knowledge. The studies are in according to the ideas of creating a distributed system of interconnected repositories of digitized versions of mathematical documents and project to create a World Digital Mathematical Library.

Includes members:
  Member "interoperability in the opendreamkit project the math in the middle approach":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "improving the representation and conversion of mathematical formulae by considering their textual context")
  Member "ontomath pro ontology a linked data hub for mathematics":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "math aware search engines physics applications and overview")
  Member "mathematical knowledge representation semantic models and formalisms":
    also connected through other hyperedges:
      (none)
  Member "math net ru as a digital archive of the russian mathematical knowledge from the xix century to today":
    also connected through other hyperedges:
      (none)
  Member "digital mathematics libraries the good the bad the ugly":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "a new style of proof for mathematics organized as a network of axiomatic theories")
  Member "digital ecosystems evolving service oriented architectures":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "ecosystem oriented distributed evolutionary computing")

Question: Please tell me which class the source paper 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.DL(Digital Libraries)