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arxiv: 1811.08206 · v1 · pith:SLILLP5Cnew · submitted 2018-11-20 · 🧮 math.FA · math.GN

Continuous projections onto ideal convergent sequences

classification 🧮 math.FA math.GN
keywords convergentmathcalsequencesboundedcontinuousidealinftyonto
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Let $\mathcal{I}\subseteq\mathcal{P}(\omega)$ be a meager ideal. Then there are no continuous projections from $\ell_\infty$ onto the set of bounded sequences which are $\mathcal{I}$-convergent to $0$. In particular, it follows that the set of bounded sequences statistically convergent to $0$ is not isomorphic to $\ell_\infty$.

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