Corpus ID: 237452506

A non-commutative analogue of Clausen's view on the id\`{e}le class group

  title={A non-commutative analogue of Clausen's view on the id\`\{e\}le class group},
  author={Oliver Braunling and Ruben Henrard and Adam-Christiaan van Roosmalen},
Clausen predicted that Chevalley’s idèle class group of a number field F appears as the first K-group of the category of locally compact F -vector spaces. This has turned out to be true, and even generalizes to the higher K-groups in a suitable sense. We replace F by a semisimple Q-algebra, and obtain Fröhlich’s non-commutative idèle class group in an analogous fashion, modulo the reduced norm one elements. Even in the number field case our proof is simpler than the existing one, and based on… Expand
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