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Mathematics
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Paul
  • Member for 12 years, 10 months
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question
75
How to write a good mathematical paper?
Aug 11, 2012
question
71
How to prove every closed interval in R is compact?
Apr 21, 2013
answer
33
How to show that the product of two irrational numbers may be irrational?
Oct 24, 2014
question
20
How to construct a Bernstein set and what are their applications?
Jul 12, 2012
answer
17
Can someone explain how $\frac{\tan x}{\sec x}=\sin x$?
Oct 3, 2014
answer
15
Show $1/(1+ x^2)$ is uniformly continuous on $\Bbb R$.
Oct 30, 2014
question
13
I want to know why $\omega \neq \omega+1$. [closed]
Jan 12, 2012
answer
13
Let $Y$ be an ordered set in the order topology with $f,g:X\rightarrow Y$ continuous, show that $\{x:f(x)\leq g(x)\}$ is closed in $X$
Jul 2, 2012
answer
11
How to find the limit of a function at infinity
Oct 24, 2014
answer
11
What is the difference between a Limit and Derivative?
Sep 27, 2014
Top network posts
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11
How to get big \{ and \} braces for an equation
5
A result on spaces with countable pseudocharacter and countable tightness
5
Is there a Hausdorff weakly Lindelof space which is not DCCC?
5
A regular first countable space of cellularity at most $2^\omega$