2 results
On holomorphic reflexivity conditions for complex Lie groups
- Part of
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- Journal:
- Proceedings of the Edinburgh Mathematical Society / Volume 64 / Issue 4 / November 2021
- Published online by Cambridge University Press:
- 30 September 2021, pp. 800-821
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We consider Akbarov's holomorphic version of the non-commutative Pontryagin duality for a complex Lie group. We prove, under the assumption that $G$
is a Stein group with finitely many components, that (1) the topological Hopf algebra of holomorphic functions on $G$
is holomorphically reflexive if and only if $G$
is linear; (2) the dual cocommutative topological Hopf algebra of exponential analytic functional on $G$
is holomorphically reflexive. We give a counterexample, which shows that the first criterion cannot be extended to the case of infinitely many components. Nevertheless, we conjecture that, in general, the question can be solved in terms of the Banach-algebra linearity of $G$
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Local left invertibility for operator tuples and noncommutative localizations
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- Journal:
- Journal of K-Theory / Volume 4 / Issue 1 / August 2009
- Published online by Cambridge University Press:
- 04 September 2008, pp. 163-191
- Print publication:
- August 2009
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In the paper we propose an operator approach to the noncommutative Taylor localization problem based on the local left invertibility for operator tuples acting on a Fréchet space. We prove that the canonical homomorphism
of the universal enveloping algebra 
of a nilpotent Lie algebra 
into its Arens-Michael envelope 
is the Taylor localization whenever has normal growth.
of the universal enveloping algebra 
of a nilpotent Lie algebra 
into its Arens-Michael envelope 
is the Taylor localization whenever 