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Mathematics
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Librecoin
  • Member for 11 years, 8 months
  • Last seen more than 10 years ago
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16
How do you orthogonally diagonalize the matrix?
May 5, 2013
question
11
Proving that $\omega(N)\neq4$ for an odd perfect number $N$ by hand
Jun 7, 2013
answer
11
Show that $\mathbb{Z}_{2} \times \mathbb{Z}_{4}$ is not a cyclic group
Nov 3, 2013
question
9
Natural extension of the divisor function $\sigma$ to the complex integers $\mathbb{Z}[i]$
May 11, 2013
answer
9
How many ways are there to distribute 5 balls into 3 boxes, under additional conditions?
Mar 25, 2013
answer
8
Finding normalised eigenvectors...
May 9, 2013
answer
7
Assuming the power series for $f(x)=e^x$ holds for complex numbers, show that $e^{ix}=\cos x+i\sin x$
Jun 10, 2013
answer
7
an odd perfect number cannot be a prime number or a product of two prime numbers or power of prime number.
Mar 24, 2013
answer
7
If I have three points, is there an easy way to tell if they are collinear?
May 29, 2013
answer
6
What are some classic fallacious proofs?
Apr 17, 2013
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22
Is it possible to view descriptions of old bounties?
16
Rename tag [eulers-constant] to [euler-mascheroni-constant]
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8
Strain and stress tensor