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Mathematics
Douglas B. Staple's user avatar
Douglas B. Staple's user avatar
Douglas B. Staple's user avatar
Douglas B. Staple
  • Member for 11 years, 6 months
  • Last seen more than 5 years ago
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37
Examples of patterns that eventually fail
Apr 10, 2013
answer
13
Second part of the factorial sum divisibility question
Mar 26, 2013
answer
10
Minimum of $n$? $123456789x^2 - 987654321y^2 =n$ ($x$,$y$ and $n$ are positive integers)
Mar 28, 2013
answer
8
Find a composite number $n$ satisfies $(2+3I)^n≡2-3I\pmod{n}$
Apr 13, 2013
answer
8
Algebra: Best mental images
Mar 25, 2013
answer
6
Second part of the factorial sum divisibility question
Mar 26, 2013
answer
5
First few coefficients of a power series
Apr 15, 2013
answer
5
Prove that $\sum_{k=0}^n{e^{ik^2}} = o(n^\alpha)$, $ \forall \alpha >0$
Mar 27, 2013
answer
5
Evaluating $\int_0^{\infty}\frac{e^{-x}}{1+x^2}dx$
Apr 12, 2013
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4
Estimation of the number of prime numbers in a $b^x$ to $b^{x + 1}$ interval
Jun 6, 2013
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30
Do we actually "welcome questions about: • Software that mathematicians use"?
25
Centralized solutions to textbook problems considered harmful?
10
Bounty awarded and original poster gone!?
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228
Measure time in Linux - time vs clock vs getrusage vs clock_gettime vs gettimeofday vs timespec_get?
176
Is there a difference between scipy.pi, numpy.pi, or math.pi?
149
How to identify numpy types in python?
125
How to identify numpy types in python?
67
What are the various physical mechanisms for energy transfer to the photon during blackbody emission?