Mathematics
Einar Rødland's user avatar
Einar Rødland's user avatar
Einar Rødland's user avatar
Einar Rødland
  • Member for 11 years, 4 months
  • Last seen this week
  • Oslo, Norway
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About

Mathematician, did my PhD in algebraic geometry working on mirror symmetry. Worked as a consultant for a number of years doing mostly statistics and data analysis, and then bioinformatics for some year. Now doing IT and data analysis.

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82
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All Questions Answers
Score Newest
answer
31
Least prime of the form $38^n+31$
Mar 23, 2014
answer
30
*understanding* covariance vs. contravariance & raising / lowering
Sep 7, 2012
answer
16
How to evaluate the derivatives of matrix inverse?
Sep 3, 2012
answer
13
Solving functional equation $f(x)^2+f(y)^2=f(x+y)(f(f(x))+f(y))$
Sep 1, 2012
answer
12
The proportion of binary digits of $\sum_{k=1}^\infty \Big\lfloor{\frac{k}{2}\sqrt{p}\Big\rfloor}\cdot2^{-k}$ equal to one, is $> 0.978$ if $p=143$.
Dec 25, 2019
answer
10
Find the terms of the sequence $a_{n+1}=1+n/a_n$ that are natural numbers
Aug 15, 2012
answer
10
Direct proof that the wedge product preserves integral cohomology classes?
Aug 16, 2012
answer
10
Solving the Functional Equation $ f \big( x + y f ( x ) \big) = f ( x ) f ( y ) $
May 28, 2017
answer
9
What if the Euler Lagrange equation yields a 'trivial' answer
Sep 6, 2012
answer
8
given that $h$ is differentiable and $h(3x)+h(2x)+h(x) = 0$ for all $x\in\mathbb{R},$ is $h$ necessarily identically zero?
Nov 20, 2022
Top network posts
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15
"Could not identify document class." error when trying to count words
12
Does the wordcount package do a proper wordcount?
10
count words in latex files with input
7
How can I obtain a character count?
5
Count "a" in text not in math mode, verbatim or lstlisting

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