The Mathematical Intelligencer

, Volume 11, Issue 3, pp 29–38 | Cite as

The greatest mathematical paper of all time

  • A. J. Coleman
Article

Conclusion

Why do I think that Z.v.G.II was an epoch-making paper?
  1. (1)

    It was the paradigm for subsequent efforts to classify the possible structures for any mathematical object. Hawkins [15] documents the fact that Killing’s paper was the immediate inspiration for the work of Cartan, Molien, and Maschke on the structure of linearassociative algebras which culminated in Wedderburn’s theorems. Killing’s success was certainly an example which gave Richard Brauer the will to persist in the attempt to classify simple groups.

     
  2. (2)

    Weyl’s theory of the representation of semi-simple Lie groups would have been impossible without ideas, results, and methods originated by Killing in Z.v.G.II. Weyl’s fusion of global and local analysis laid the basis for the work of Harish-Chandra and the flowering of abstract harmonic analysis.

     
  3. (3)

    The whole industry of root systems evinced in the writings of I. Macdonald, V. Kac, R. Moody, and others started with Killing. For the latest see [21].

     
  4. (4)

    The Weyl group and the Coxeter transformation are in Z.v.G.II. There they are realized not as orthogonal motions of Euclidean space but as permutations of the roots. In my view, this is the proper way to think of them for general Kac-Moody algebras. Further, the conditions for symmetrisability which play a key role in Kac’s book [17] are given on p. 21 of Z.v.G.II.

     
  5. (5)

    It was Killing who discovered the exceptional Lie algebra E8, which apparently is the main hope for saving Super-String Theory—not that I expect it to be saved!

     
  6. (6)

    Roughly one third of the extraordinary work of Elie Cartan was based more or less directly on Z.v.G.II.

     

Euclid’sElements and Newton’sPrincipia are more important than Z.v.G.II. But if you can name one paper in the past 200 years of equal significance to the paper which was sent off diffidently to Felix Klein on 2 February 1888 from an isolated outpost of Bismarck’s empire, please inform the Editor of theMathematical Intelligencer.

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Copyright information

© Springer Science+Business Media, Inc. 1989

Authors and Affiliations

  • A. J. Coleman
    • 1
  1. 1.Department of Mathematics and StatisticsQueen’s UniversityKingstonCanada

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