Mathematics – Rings and Algebras
Scientific paper
2011-02-26
Mathematics
Rings and Algebras
Scientific paper
In the present paper we discuss some recent versions of localisation methods for calculations in the groups of points of algebraic-like and classical-like groups. Namely, we describe relative localisation, universal localisation, and enhanced versions of localisation-completion. Apart from the general strategic description of these methods, we state some typical technical results of the conjugation calculus and the commutator calculus. Also, we state several recent results obtained therewith, such as relative standard commutator formulae, bounded width of commutators, with respect to the elementary generators, and nilpotent filtrations of congruence subgroups. Overall, this shows that localisation methods can be much more efficient, than expected.
Hazrat Roozbeh
Stepanov Alexander V.
Vavilov N. A.
Zhang Zhongsheng
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