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Ninja
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"If you stay ready, you do not have to get ready"

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12
'Comeback' stories of Mathematicians
Mar 19, 2017
11
Pointwise convergence equivalent to convergence in pointwise topology
Mar 29, 2017
6
Derivative of $x|x|$
Mar 9, 2017
6
Minkowski's Inequality in $L^\infty$ space
Dec 19, 2014
6
Classifying prime ideals of $\mathbb{Z}[i]$
Oct 19, 2017
5
Alternative solutions for $\cos(x)=-\frac{1}{2}$
Mar 9, 2017
5
What can we say about class number of a number field using class number formula?
Feb 21, 2018
5
Where does $\pi$ of the class number formula come from?
Feb 21, 2018
5
Union of connected sets which have pairwisely nonempty intersections
Mar 28, 2017
4
What are the "best" groups to use as examples while learning new concepts in algebra? [closed]
Mar 5, 2017
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How to efficiently use time while preparing for a class?
14
What are the "best" groups to use as examples while learning new concepts in algebra?
7
How to catch students from different subjects' interest to math?
6
What are the fastest ways to calculate class number of number fields?