
doi: 10.1007/bf01157539
Let \((H_ k)^{\infty}_{k=1}\) be sequence of linear subspaces of a topological linear space \(H\) over the field \(\Phi\). One says that \((H_ k)\) is a representing system for \(H\) if every \(x\in X\) can be represented as a convergent series \[ x=\sum^{\infty}_{k=1}y_ k,\quad y_ k\in H_ k,\quad k=1,2,\ldots,\tag{*} \] When \(H\) is a separated locally convex space and the above series is absolutely convergent one says that \((H_ k)\) is an absolutely representing system. The aim of the paper is to give examples of representing systems which neither satisfy \(H_ n=\Phi x_ n\), \(\forall n\), nor the representation (*) is unique (i.e. \((H_ k)\) is a basis for \(H\)). All the examples are given in the space \(H(\mathcal G)\) of analytic functions on the domain \(\mathcal G\subset \mathbb C=\Phi\) endowed with the topology of uniform convergence on compact subsets of \(\mathcal G\).
Summability and bases in topological vector spaces, Topological linear spaces of continuous, differentiable or analytic functions, absolutely representing system
Summability and bases in topological vector spaces, Topological linear spaces of continuous, differentiable or analytic functions, absolutely representing system
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