https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52084 Thu 28 Sep 2023 14:21:53 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:42700 Thu 01 Sep 2022 09:41:33 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:20792 ϯ of a totally disconnected locally compact group G is defined as the abstract subgroup generated by the closures of the contraction groups of all its elements. We show that a dense subgroup is normalised by the Tits core if and only if it contains it. It follows that every dense subnormal subgroup contains the Tits core. In particular, if G is topologically simple, then the Tits core is abstractly simple, and when G^ϯ is non-trivial, it is the smallest dense normal subgroup. The proofs are based on the fact, of independent interest, that the map which associates to an element the closure of its contraction group is continuous.]]> Sat 24 Mar 2018 08:05:59 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:20382 SUB(G) denote the function which attaches to an element g of G the closed subgroup generated by it. It is shown that G is totally disconnected if and only if μ is continuous. Several other functions which associate with an element of G in a natural way a closed subgroup of G are discussed with respect to their continuity in totally disconnected locally compact groups.]]> Sat 24 Mar 2018 07:58:12 AEDT ]]>