10

Questions
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Is the sum of 2 Lebesgue measurable sets measurable?

may 27 11 at 14:42 Goldstern 5,260●1●12●27

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A question on weak derivative - Sobolev spaces

may 4 11 at 23:34 Manfred Sauter 76●1

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18
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4k
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Good books on theory of distributions

nov 29 10 at 5:26 Bon Clarke 1

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Unbounded operator bounded in a dense subset

aug 26 10 at 19:09 Pierre-Yves Gaillard 543●2●10●16

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Is anything known about $w^*(x)=\sup_y w(x+y)/w(y)$ for measurable functions w on $R^n$

jul 4 10 at 16:18 Nicolò 512●3●17

 
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3
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If the fourier transformed of f is odd, is f odd?

jun 22 10 at 11:25 Zen Harper 1,293●8●15

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1
answer
816
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If a Borelian set has positive measure, does it contain a non empty open set (minus a measure null set)?

apr 6 10 at 15:35 Petya 2,965●6●24

 
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1
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226
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If f_k does not go to 0 a.e., there exists a subsequence, a set of positive measure, and c > 0, on which liminf |f_k_j| > c ?| >

apr 4 10 at 16:42 Nicolò 512●3●17

 
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Lebesgue measure of a set

mar 28 10 at 0:17 Nicolò 512●3●17

 
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How to show that x-y is Lebesgue-Lebesgue measurable

mar 27 10 at 17:25 Nicolò 512●3●17