14,731 reputation
21237
bio website siminore.info
location Italy
age
visits member for 2 years, 4 months
seen 17 hours ago

21h
answered Do journals that published a proof of an important theorem $T$ publish another proof of $T$?
1d
comment Differential of the inversion of Lie group
And I think that you can find some hints here: math.stackexchange.com/questions/209682/…
1d
comment Differential of the inversion of Lie group
An involved solution seems to appear here: physicsforums.com/showthread.php?t=605960
1d
comment Multiple differentiability from Taylor expansion
This question received and answer on Mathoverflow: mathoverflow.net/questions/88501/converse-of-taylors-theorem
1d
revised square of complex numbers
edited body
2d
answered inequality with absolute value?
2d
revised The map $t\mapsto (\cos t,\sin t)$ is injective from $[0,2\pi)$ onto the circle, but its inverse is not continuous
deleted 5 characters in body
2d
answered The map $t\mapsto (\cos t,\sin t)$ is injective from $[0,2\pi)$ onto the circle, but its inverse is not continuous
Aug
18
comment Limit of a function is unique
Yes, we should write $q_1 \in \lim_{x \to p} f(x)$, but the conclusion is essentially the same.
Aug
17
answered Limit of a function is unique
Aug
16
revised Embedding of weighted Lebesgue space on Fourier side into $C^\infty$
added 4 characters in body
Aug
15
comment Integral $ \lim_{k \rightarrow \infty} \int_{\mathbb{R}^n} \chi_{B_k} f \mathrm{d}\lambda_n(x) $ (Lebesgue)
But what are your assumptions on the function $f$?
Aug
15
answered Book on “Measure and integration” for starters.
Aug
2
answered Unified notion of what “$dx$” means
Aug
1
revised Using Polar Coordinates to Calculate Double Integral
deleted 36 characters in body
Jul
31
reviewed Approve suggested edit on The series $\sum a_n$ converges, where $a_n$ is the product of fractions from $1/2$ to $(2n-3)/(2n-2)$, divided by $2n-1$
Jul
31
revised Multivariable Calculus application
added 6 characters in body
Jul
31
comment To control first derivative with the function itself.
I guess the OP wants $f'(x)^2 < Cf(x)$.
Jul
31
comment To control first derivative with the function itself.
I can't understand: if you take a bump function, very steep but bounded, how can you have such an inequality?
Jul
31
awarded  Custodian