Dergiler / Turkish Journal of Mathematics / 2000 / Cilt: 24 - Sayı: 4

On the Linearity of Certain Mapping Class Groups

Sayfa
367–371
DOI
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Özet

S. Bigelow proved that the braid groups are linear. That is, there is a faithful representation of the braid group into the general linear group of some field. Using this, we deduce from previously known results that the mapping class group of a sphere with punctures and hyperelliptic mapping class groups are linear. In particular, the mapping class group of a closed orientable surface of genus 2 is linear.

Abstract

S. Bigelow proved that the braid groups are linear. That is, there is a faithful representation of the braid group into the general linear group of some field. Using this, we deduce from previously known results that the mapping class group of a sphere with punctures and hyperelliptic mapping class groups are linear. In particular, the mapping class group of a closed orientable surface of genus 2 is linear.

Anahtar kelimeler: Mapping class groups, Braid groups, Linear groups