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.
Cite this article
Saeid Azam, Valiollah Shahsanaei, On the Presentations of Extended Aﬃne Weyl Groups. Publ. Res. Inst. Math. Sci. 44 (2008), no. 1, pp. 131–161DOI 10.2977/PRIMS/1207921079