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Results tagged with fa.functional-analysis
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user 490101
Banach spaces, function spaces, real functions, integral transforms, theory of distributions, measure theory.
6
votes
2
answers
421
views
Lipschitz mappings, covering dimension
Is there a compact metric space $X$ of covering dimension $2$ without a Lipschitz surjection on $[0,1]^2$?
For a space $X$ with Hausdorff dimension greater than $2$, we have a negative answer (see The …
- 97
1
vote
1
answer
132
views
Construction of the Lipschitz function with a given Lipschitz constant and given two values
Let the function $f\colon [a,b] \to\mathbb{C}$ be Lipschitz and let $|f(a)| \geq c$ and $|f(b)| = c$. Is there a Lipschitz function $g$ such that $|g| \geq c,$ $g(a)=f(a),$ $ g(b)=f(b)$ and Lipschitz …
- 97
2
votes
1
answer
273
views
Construction of the Lipschitz function with a given Lipschitz constant, given two values and...
Let the function $f\colon [a,b] \to\mathbb{C}$ be Lipschitz and let $|f(a)| \geq c,$ $|f(b)| = c$ and $\varepsilon > 0.$
It is easy to see that if $\|f\|_{\infty}< \frac{\varepsilon}{2} =: \delta (\va …
- 97