3,852 reputation
11345
bio website bruno.stonek.com
location Montevideo, Uruguay
age 24
visits member for 3 years, 6 months
seen 3 hours ago

Math student in Université Paris 13.


May
14
awarded  Self-Learner
May
14
revised If $\sum a_n b_n <\infty$ for all $(b_n)\in \ell^2$ then $(a_n) \in \ell^2$
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May
14
answered If $\sum a_n b_n <\infty$ for all $(b_n)\in \ell^2$ then $(a_n) \in \ell^2$
May
14
comment where to find a proof of the Lebesgue Density Theorem
I'm very glad to see you're back! This is great.
May
14
revised Why isn't the perfect closure separable?
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May
14
comment where to find a proof of the Lebesgue Density Theorem
This is exercise 25 on page 100 of Folland, Real Analysis, chapter "Differentiation on Euclidean Space".
May
14
comment Question on measure theory
This is exercise 25 on page 100 of Folland, Real Analysis, chapter "Differentiation on Euclidean Space"
May
14
comment Why isn't the perfect closure separable?
The bounty expires in 2 days. Would you please expand your answer?
May
13
awarded  Nice Question
May
12
revised Why isn't the perfect closure separable?
added 29 characters in body
May
11
comment Norms for space $V$ of vector-valued mappings $f: \mathbb R^m \rightarrow \mathbb R^n$
It's too late right now to even think straight, but I suspect that if we take $\inf \{ C\ge 0 : \|f(x)\| \le C \mbox{ for almost every } x\}$ and any $n$, then the same thing works. I'll think it over tomorrow.
May
11
revised Norms for space $V$ of vector-valued mappings $f: \mathbb R^m \rightarrow \mathbb R^n$
added 291 characters in body; deleted 3 characters in body; added 43 characters in body
May
11
answered Norms for space $V$ of vector-valued mappings $f: \mathbb R^m \rightarrow \mathbb R^n$
May
11
revised Norms for space $V$ of vector-valued mappings $f: \mathbb R^m \rightarrow \mathbb R^n$
vector-valued is more accurate than multivalued
May
11
comment Norms for space $V$ of vector-valued mappings $f: \mathbb R^m \rightarrow \mathbb R^n$
It is confusing, since "multivalued function" is reserved for another thing, see en.wikipedia.org/wiki/Multivalued_function
May
11
suggested suggested edit on Norms for space $V$ of vector-valued mappings $f: \mathbb R^m \rightarrow \mathbb R^n$
May
11
comment Good book for self study of functional analysis
From what (little) I've read from Kreyszig, he's rigorous! Luckily, applied doesn't always mean non-rigorous... Also luckily, rigorous doesn't always mean dense reading :P
May
10
awarded  Fanatic
May
9
comment Why isn't the perfect closure separable?
Would you care to elaborate?
May
8
awarded  Promoter