Abstract
Abstract Let n â©Ÿ 2 n\geqslant 2 . In this note, we give a short uniform proof of property R â R_{\infty} for the ArtinâTits groups of spherical types A n A_{n} , B n B_{n} , D 4 D_{4} , I 2 âą ( m ) I_{2}(m) ( m â©Ÿ 3 m\geqslant 3 ), their pure subgroups, and for the ArtinâTits groups of affine types A ~ n - 1 \tilde{A}_{n-1} and C ~ n \tilde{C}_{n} . In particular, we provide an alternative proof of a recent result of Dekimpe, Gonçalves and Ocampo, who established property R â R_{\infty} for pure Artin braid groups.
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