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Paper   IPM / M / 8546
School of Mathematics
  Title:   On the presentations of extended affine Weyl groups
  Author(s):  S. Azam (Joint with V. Shahsanaei)
  Status:   Published
  Journal: Publ. RIMS, Kyoto Univ.
  Vol.:  44
  Year:  2008
  Pages:   131-161
  Supported by:  IPM
We give a finite presentation for reduced non-simply laced extended affine Weyl groups of arbitrary nullity. When nullity is less than or equal to 3, this presentation reduces to a very simple presentation in which the generators and relations can be easily read from a set of data attached to the root system.

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