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isomorphismes

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129
Grouping functions (tapply, by, aggregate) and the *apply family
stackoverflow.com

50
What is a lambda (function)?
stackoverflow.com

32
Fourier transform for dummies
math.stackexchange.com

29
Making sense of principal component analysis, eigenvectors & eigenvalues
stats.stackexchange.com

24
Plot two graphs in same plot in R
stackoverflow.com

24
Intuition behind Matrix Multiplication
math.stackexchange.com

23
tmux bottom bar color change
unix.stackexchange.com

21
Exception handling in R
stackoverflow.com

18
Non-Scientific questions solved by mathematics
math.stackexchange.com

17
What are the benefits of learning Vim?
stackoverflow.com

15
Do complex numbers really exist?
math.stackexchange.com

15
How do I reorder tmux windows?
superuser.com

13
Hedging stocks with VIX futures
quant.stackexchange.com

13
Benefits of EBS vs. instance-store (and vice-versa)
stackoverflow.com

12
What is the difference between ri and rdoc
stackoverflow.com

12
Can I use my powers for good?
math.stackexchange.com

11
Why can we prove mathematically that a formula to solve an (n+5) order polynomial does not exist?
math.stackexchange.com

11
Is there software that can fill PDF forms?
askubuntu.com

11
Are there other nice math books close to the style of Tristan Needham?
mathoverflow.net

11
Why is the gradient normal?
mathoverflow.net

10
How to write popular mathematics well?
mathoverflow.net

9
In (relatively) simple words: What is an inverse limit?
math.stackexchange.com

8
How are correlation and cointegration related?
quant.stackexchange.com

8
What is a diffeomorphism?
math.stackexchange.com

8
What is a covector and what is it used for?
math.stackexchange.com

8
Can I use Ravi Vakil's way of learning for elementary subjects?
math.stackexchange.com

8
List of Interesting Math Blogs
math.stackexchange.com

7
Option pricing before Black-Scholes
quant.stackexchange.com

7
Expert R users, what's in your .Rprofile?
stackoverflow.com

7
Is there a continuous Taylor/MacLaurin transform (like the Fourier transform)?
math.stackexchange.com

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