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Results tagged with fa.functional-analysis
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user 116999
Banach spaces, function spaces, real functions, integral transforms, theory of distributions, measure theory.
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votes
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answer
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Density-$c_0$ in $\ell^\infty$
Let $A \subseteq \mathbb{N}$, define the upper density of $A$ as,
$$
\overline{\delta}(A) := \limsup_{N\to\infty}\frac{|A\cap\{1,2,3,\cdots,N\}|}{N}.
$$
This naturally leads to a weaker form of conve …
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