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Apr
21
awarded  Popular Question
Dec
10
awarded  Nice Question
Nov
22
awarded  Popular Question
Nov
11
awarded  Popular Question
Oct
1
awarded  Yearling
Sep
28
awarded  Popular Question
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22
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Sep
16
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Jul
28
awarded  Famous Question
Jul
22
awarded  Notable Question
May
9
comment Understanding Borel sets
I do expect to see more up-vote!
May
9
accepted Real analysis: Show the limit $\lim nμ(E_n) = 0$.
May
9
asked Real analysis: Show the limit $\lim nμ(E_n) = 0$.
May
3
awarded  Popular Question
Mar
3
accepted What is space B(X,R)?
Mar
3
comment What is space B(X,R)?
Great! For A, does the domain and codomain of function contained in A?
Mar
3
revised What is space B(X,R)?
added 151 characters in body
Mar
3
asked What is space B(X,R)?
Mar
2
comment Real analysis: Show a continuous and nonnegative function on $[a, b]$ = 0
I got it! One more question about detail. I do not know why do we need $x$. We naturally have $f(x_0)>1/2f(x_0)$, since it is a positive.
Feb
27
accepted Real analysis: Show a continuous and nonnegative function on $[a, b]$ = 0