Even positive definite unimodular quadratic forms over real quadratic fields

@article{Hsia1989EvenPD,
  title={Even positive definite unimodular quadratic forms over real quadratic fields},
  author={John S. Hsia},
  journal={Rocky Mountain Journal of Mathematics},
  year={1989},
  volume={19},
  pages={725-734}
}
  • J. Hsia
  • Published 1 September 1989
  • Mathematics
  • Rocky Mountain Journal of Mathematics
In spite of the numberous connections between even positive definite unimodular quadratic forms (henceforth referred to as even unimodular lattices) over Q with other subjects (e.g., finite group theory, geometry of numbers, combinatorial coding and design theories, automorphic functions, the explicit classification of these lattices has only been fully determined for a few cases, the most celebrated of them being undoubtedly the Leech-Niemeier-Witt [4] solution for the 24-dimensional Z… 

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