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seen Jun 12 '13 at 18:30

Feb
14
revised Bernoulli integral (conservation of energy)
added 272 characters in body
Feb
13
revised Bernoulli integral (conservation of energy)
added 104 characters in body; edited title
Feb
12
revised Bernoulli integral (conservation of energy)
added 57 characters in body
Feb
12
asked Bernoulli integral (conservation of energy)
Jan
21
awarded  Tumbleweed
Jan
18
awarded  Promoter
Nov
28
accepted Given a set $A$ such that for any family of sets $F$: if $\cup F = A$ then $A \in F$.
Nov
28
comment Given a set $A$ such that for any family of sets $F$: if $\cup F = A$ then $A \in F$.
I know why but i dont know how to explain it.. the answer is: A doesn't belong to F because of the definition of F..
Nov
28
revised Given a set $A$ such that for any family of sets $F$: if $\cup F = A$ then $A \in F$.
edited title
Nov
28
comment Given a set $A$ such that for any family of sets $F$: if $\cup F = A$ then $A \in F$.
can you give me an exaple of A and F? I think I dont really know what is F.. thank you!
Nov
28
comment Given a set $A$ such that for any family of sets $F$: if $\cup F = A$ then $A \in F$.
@DonAntonio, you are right. I translated the word to english and use a group instead of a set.
Nov
28
revised Given a set $A$ such that for any family of sets $F$: if $\cup F = A$ then $A \in F$.
deleted 4 characters in body
Nov
28
asked Given a set $A$ such that for any family of sets $F$: if $\cup F = A$ then $A \in F$.
Nov
25
comment Prove that if $ |a_n-a_{n-1}| < \frac{1}{2^{n+1} }$ and $a_0=\frac12$, then $\{a_n\}$ converges to $0<a<1$
thank you Marty, but what's about: 0 < a < 1 ? does it show me that?
Nov
24
comment Prove that if $ |a_n-a_{n-1}| < \frac{1}{2^{n+1} }$ and $a_0=\frac12$, then $\{a_n\}$ converges to $0<a<1$
but what $a_n$ is?
Nov
24
asked Prove that if $ |a_n-a_{n-1}| < \frac{1}{2^{n+1} }$ and $a_0=\frac12$, then $\{a_n\}$ converges to $0<a<1$
Nov
23
awarded  Scholar
Nov
23
accepted what is $\displaystyle \lim_{n\to \infty }\ \left(\frac{1}{n}\right)^\frac{1}{\text{ln}\text{ ln}(n)}$
Nov
23
awarded  Supporter
Nov
23
comment what is $\displaystyle \lim_{n\to \infty }\ \left(\frac{1}{n}\right)^\frac{1}{\text{ln}\text{ ln}(n)}$
wow, thank you! although I didn't learn the operating of 'log', now I know it thanks to you! thank you!