Mathematics
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Qbik
  • Member for 11 years, 1 month
  • Last seen more than a month ago
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28
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All Questions Answers
Score Newest
question
8
Is $\pi$ periodic in any numeral system?
May 6, 2012
question
8
Find all limit points of $M=\left \{ \frac{1}{n}+\frac{1}{m}+\frac{1}{k} : m,n,k \in \mathbb{N} \right \}$ in space $(M,\rho_{e})$
May 9, 2012
question
6
What is the sum of $\sum\limits_{i=1}^{n}ip^i$?
Aug 8, 2012
question
5
Is it equation true - limit
Apr 10, 2012
question
4
Is my proof for $\sum_{i=1}^{n}x_{i}y_{i}\leq \sqrt{\sum_{i=1}^{n}x_{i}^{2}\sum_{i=1}^{n}y_{i}^{2}}$ correct?
May 7, 2012
question
4
Find $C$, if $A=CBC$, where $A$,$B$,$C$ are symmetric matrices. [duplicate]
Jan 23, 2013
question
4
What is closed-form expression for $F(n)$ when $F(n)=F(n-1)+F(n-2)$ and $F(0)=a$,$F(1)=b$ and $a,b>0$?
Feb 21, 2013
question
4
Checking Sudoku - sufficient sums
Mar 11, 2013
question
3
What is the distribution of empirical covariance between two independent normal distributions?
Feb 13, 2013
question
3
Is the Fujiwara bound the most precise bound on maximum absolute value of complex roots of real polynomials?
Feb 25, 2013
Top network posts
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164
Remove all special characters from a string in R?
58
Is there any gold standard for modeling irregularly spaced time series?
28
How to convert integer number into binary vector?
26
Interpretation of gc() result in R
24
How can two strings be concatenated?

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