Mathematics
Jeppe Stig Nielsen's user avatar
Jeppe Stig Nielsen's user avatar
Jeppe Stig Nielsen's user avatar
Jeppe Stig Nielsen
  • Member for 10 years, 8 months
  • Last seen this week
  • Copenhagen, Denmark
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5,097
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569k
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127
answers
16
questions
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28
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47
Score
13
Posts
9
Posts %
46
Score
11
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8
Posts %
34
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23
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16
Posts %
31
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9
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6
Posts %
24
Score
9
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6
Posts %
19
Score
13
Posts
9
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Top posts
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All Questions Answers
Score Newest
question
28
A number $n$ which is the sum of all numbers $k$ with $\sigma(k)=n$?
Jan 30, 2015
answer
28
When does a space admit a flat metric?
Nov 15, 2017
question
25
Integers $n$ for which the digit sum of $n$ exceeds the digit sum of $n^5$
Aug 18, 2015
answer
25
How would you explain to a 9th grader the negative exponent rule?
Jan 7, 2014
answer
21
What is $\mathbb R^{\mathbb R}$ as a vector space?
Dec 29, 2015
answer
20
Transpose of inverse vs inverse of transpose
Jan 28, 2014
question
13
Locus of points such that facing Mecca is the same as facing east
Jan 6, 2017
question
11
If $b$ is even and not a power of two, can $b^4+1$ be a weak pseudoprime?
Mar 7, 2016
answer
11
Is there a way to find the log of very large numbers?
Mar 17, 2018
question
10
Can a composite number $3\cdot 2^n + 1$ divide a Fermat number $2^{2^m}+1$?
Apr 24, 2020
Top network posts
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578
Should 'using' directives be inside or outside the namespace in C#?
220
'Static readonly' vs. 'const'
126
What is the difference between String and string in C#?
123
Using lambda expression in place of IComparer argument
90
Should the hash code of null always be zero, in .NET

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